CCNA2. 2014 Chapter 2 (Form A).Answer

合集下载

ccna第二学期练习答案中文

ERouting Chapter 1 - CCNA Exploration: 路由协议和概念(版本4.0)1口令可用于限制对Cisco IOS 所有或部分内容的访问。

请选择可以用口令保护的模式和接口。

（选择三项。

）VTY 接口控制台接口特权执行模式2路由器从相连的以太网接口收到消息后，会更改哪项报头地址，再将消息从另一个接口发送出去？第 2 层源地址和目的地址3请参见图示。

网络管理员已经为路由器连接到直连网络的接口配置了如图所示的IP 地址。

从路由器ping 相连网或路由器接口之间相互ping 都会遭到失败。

此问题最可能的原因是什么？必须使用no shutdown命令启用接口。

4请参见图示。

主机A ping 主机B。

当以太网接口的ping 时，哪两块报头信息包括在内？（选择两项。

）目的IP 地址：192.168.10.134目的MAC 地址：9999.DADC.12345网络管理员刚把新配置输入Router1。

要将配置更改保存到NVRAM，应该执行哪一条命令？Router1# copy running-config startup-config6您需要配置图中所示的串行连接，必须在Sydney 以下哪条配置命令才能与Melbourne 站点建立连接？（选择三项）Sydney(config-if)# ip address 201.100.53.2 255.255.255.0Sydney(config-if)# no shutdownSydney(config-if)# clock rate 560007请参见图示。

从路由器的运行配置输出可得出什么结论？显示的命令决定了路由器的当前运行情况。

8请参见图示。

在主机2 连接到LAN 上的交换机后法与主机 1 通信。

导致此问题的原因是什么？主机 1 和主机2 位于不同的网络中。

9输入以下命令的作用是什么？R1(config)# line vty 0 4R1(config-line)# password check123R1(config-line)# login设置通过Telnet 连接该路由器时使用的口令10以下哪一项正确描述了路由器启动时的顺序？加载bootstrap、加载IOS、应用配置11加载配置文件时的默认顺序是怎样的？NVRAM、TFTP、CONSOLE12请参见图示。

CCNA2 题库

CCNA 2 - Chapter 11What is one advantage of using the cut-through switching method instead of the store-and-forward switching method?has a positive impact on bandwidth by dropping most of the invalid framesmakes a fast forwarding decision based on the source MAC address of the framehas a lower latency appropriate for high-performance computing applications*provides the flexibility to support any mix of Ethernet speeds2A network designer must provide a rationale to a customer for a design which will move an enterprise from a flat network topology to a hierarchical network topology. Which two features of the hierarchical design make it the better choice? (Choose two.)reduced cost for equipment and user trainingless required equipment to provide the same performance levelssimpler deployment for additional switch equipment*easier to provide redundant links to ensure higher availability*lower bandwidth requirements3What are two advantages of modular switches over fixed-configuration switches? (Choose two.)availability of multiple ports for bandwidth aggregationlower forwarding ratesneed for fewer power outlets*lower cost per switchincreased scalability*4Refer to the exhibit. Consider that the main power has just been restored. PC1 asks the DHCP server for IPv4 addressing. The DHCP server sends it an IPv4 address. While PC2 is still booting up, PC3 issues a broadcast IPv4 DHCP request. To which port will SW1 forward this request?to Fa0/1, Fa0/2, and Fa0/4 onlyto Fa0/1, Fa0/2, Fa0/3, and Fa0/4to Fa0/1 and Fa0/2 onlyto Fa0/1, Fa0/2, and Fa0/3 only*to Fa0/1 only5What is one function of a Layer 2 switch?forwards data based on logical addressinglearns the port assigned to a host by examining the destination MAC addressduplicates the electrical signal of each frame to every portdetermines which interface is used to forward a frame based on the destination MAC address*6Refer to the exhibit. Fill in the blank.There are ” 12” collision domains in the topology.7What is a collapsed core in a network design?a combination of the functionality of the access, distribution, and core layersa combination of the functionality of the access and core layersa combination of the functionality of the distribution and core layers*a combination of the functionality of the access and distribution layers 8What are two reasons a network administrator would segment a network with a Layer 2 switch? (Choose two.)to enhance user bandwidth*to eliminate virtual circuitsto create more broadcast domainsto isolate traffic between segments*to isolate ARP request messages from the rest of the networkto create fewer collision domains9Refer to the exhibit.How is a frame sent from PCA forwarded to PCC if the MAC address table on switch SW1 is empty?SW1 forwards the frame directly to SW2. SW2 floods the frame to all ports connected to SW2, excluding the port through which the frame entered the switch.SW1 floods the frame on all ports on the switch, excluding the interconnected port to switch SW2 and the port through which the frame entered the switch.SW1 floods the frame on all ports on SW1, excluding the port through which the frame entered the switch.*SW1 drops the frame because it does not know the destination MAC address.10Place the options in the following order:[+] appropriate for high performance computing applications[+] forwarding process can begin after receiving the destination address [+] may forward invalid frames[#] error checking before forwarding[#] forwarding process only begin after receiving the entire frame [#] only forward valid frames[+] Order does not matter within this group.[#] Order does not matter within this group.11What is a basic function of the Cisco Borderless Architecture distribution layer?aggregating Layer 3 routing boundaries*aggregating all the campus blocksacting as a backboneproviding access to the user12ABC, Inc. has about fifty hosts in one LAN. The administrator would like to increase the throughput of that LAN. Which device will increase the number of collision domains and thereby increase the throughput of the LAN?hubhostNICswitch*13What does the term “port density” represent for an Ethernet switch?the numbers of hosts that are connected to each switch portthe speed of each portthe memory space that is allocated to each switch portthe number of available ports*14Which type of transmission does a switch use when the destination MAC address is not contained in the MAC address table?anycastunicastbroadcast*multicast15What is a basic function of the Cisco Borderless Architecture access layer?aggregates Layer 3 routing boundariesprovides high availabilityaggregates Layer 2 broadcast domainsprovides access to the user*16What information is added to the switch table from incoming frames?source MAC address and incoming port number*destination MAC address and incoming port numberdestination IP address and incoming port numbersource IP address and incoming port number17Fill in the blank.A “converged” network is one that uses the same infrastructure to carry voice, data, and video signals.18An administrator purchases new Cisco switches that have a feature called StackPower. What is the purpose of this feature?It enables many switches to be connected with a special fiber-optic power cable to provide higher bandwidth.It enables the sharing of power among multiple stackable switches.*It enables many switches to be connected to increase port density.It enables many switches to be physically stacked in an equipment rack.It enables AC power for a switch to be provided from a powered patch panel.19Which switch form factor should be used when large port density, fault tolerance, and low price are important factors?fixed-configuration switchmodular switchstackable switch*rackable 1U switch20Refer to the exhibit. Fill in the blank.There are ” 5 ”CCNA 2 - Chapter 2Posted by beotron at 8:59 PM1. A static route that points to the next hop IP will have what administrative distance and metric in the routing table?• administrative distance of 0 and metric of 0• administrative distance of 0 and metric of 1• administrative distance of 1 and metric of 0• administrative distance of 1 and metric of 12. What address can be used to summarize networks 172.16.1.0/24, 172.16.2.0/24, 172.16.3.0/24, and 172.16.4.0/24?• 172.16.0.0/21• 172.16.1.0/22• 172.16.0.0 255.255.255.248• 172.16.0.0 255.255.252.03. The routers in the diagram use the subnet assignments shown. What is the most efficient route summary that can be configured on Router3 to advertise the internal networks to the cloud?• 192.1.1.0/26 and 192.1.1.64/27• 192.1.1.128/25• 192.1.1.0/23 and 192.1.1.64/23• 192.1.1.0/24• 192.1.1.0/25• 192.1.1.0/24 and 192.1.1.64/244. Refer to the exhibit. What is the significance of the /8 in the route to the 10.0.0.0 network?• It indicates that there are 8 hops between this router and the 10.0.0.0 network.• It represents the time, in milliseconds, it takes for a ping to reply when sent to the 10.0.0.0 network.• It indicates that there are 8 subnets in the destination network to which the router can forward packets.• It indicates the number of consecutive bits, from the left, in the destination IP address of a packet that must match 10.0.0.0 to use that route.5. Refer to the exhibit. How will packets destined to the 172.16.0.0 network be forwarded?• Router1 will perform recursive lookup and packet will exit S0/0.• Router1 will perform recursive lookup and packet will exit S0/1.• There is no matching interface associated with network 172.16.0.0 so packets will be dropped.• There is no matching interface associated with network 172.16.0.0 so packets will take gateway of last resort and exit out S0/2.6. A network administrator enters the following command into Router1: ip route 192.168.0.0255.255.255.0 S0/1/0. Router1 then receives a packet that is destined for 192.168.0.22/24. After finding the recently configured static route in the routing table, what does Router1 do next to process the packet? • drops the packet because the destination host is not listed in the routing table• looks up the MAC address of the S0/1/0 interface to determine the destination MAC address of the new frame• performs a recursive lookup for the IP address of the S0/1/0 interface before forwarding the packet• encapsulates the packet into a frame for the WAN link and forwards the packet out the S0/1/0 interface7. Refer to the exhibit. Given the output in the exhibit, how would a clock rate be determined for this link? • The rate would be negotiated by both routers.• A rate would not be selected due to the DCE/DTE connection mismatch.• The rate configured on the DTE determines the clock rate.• The rate configured on the DCE determines the clock rate.8. Refer to the exhibit. Which set of commands will configure static routes that will allow the WinterPark and the Altamonte routers to deliver packets from each LAN and direct all other traffic to the Internet? • WinterPark(config)# ip route 0.0.0.0 0.0.0.0 192.168.146.1Altamonte(config)# ip route 10.0.234.0 255.255.255.0 192.168.146.2Altamonte(config)# ip route 0.0.0.0 0.0.0.0 s0/1• WinterPark(config)# ip route 0.0.0.0 0.0.0.0 192.168.146.1Altamonte(config)# ip route 10.0.234.0 255.255.255.0 192.168.146.2Altamonte(config)# ip route 198.18.222.0 255.255.255.255 s0/1• WinterPark(config)# ip route 172.191.67.0 255.255.255.0 192.168.146.1• WinterPark(config)# ip route 0.0.0.0 0.0.0.0 192.168.146.1Altamonte(config)# ip route 10.0.234.0 255.255.255.0 192.168.146.2• WinterPark(config)# ip route 172.191.67.0 255.255.255.0 192.168.146.1Altamonte(config)# ip route 10.0.234.0 255.255.255.0 192.168.146.2Altamonte(config)# ip route 0.0.0.0 0.0.0.0 s0/09. Hosts on two separate subnets cannot communicate. The network administrator suspects a missing route in one of the routing tables. Which three commands can be used to help troubleshoot Layer 3 connectivity issues? (Choose three.)• ping• show arp• traceroute• show ip route• show interface• show cdp neighbor d etail10. Refer to the exhibit. A company network engineer is assigned to establish connectivity between the two Ethernet networks so that hosts on the 10.1.1.0/24 subnet can contact hosts on the 10.1.2.0/24 subnet. The engineer has been told to use only static routing for these company routers. Which set of commands will establish connectivity between the two Ethernet networks?• R1(config)# ip route 10.1.2.0 255.255.255.0 192.168.0.1R2(config)# ip route 10.1.1.0 255.255.255.0 192.168.0.2• R1(config)# ip route 10.1.2.0 255.255.255.0 192.168.0.2R2(config)# ip route 10.1.1.0 255.255.255.0 192.168.0.1• R1(config)# ip route 10.1.1.0 255.255.255.0 192.168.0.2R2(config)# ip route 10.1.2.0 255.255.255.0 192.168.0.1• R1(config)# ip route 10.1.1.0 255.255.255.0 192.168.0.1R2(config)# ip route 10.1.2.0 255.255.255.0 192.168.0.2• R1(config)# ip route 0.0.0.0 0.0.0.0 10.1.2.1R2(config)# ip route 0.0.0.0 0.0.0.0 10.1.1.111. Which of the following are displayed by the Router# show cdp neighbors command? (Choose three.) • load• platform• reliability• holdtime• local interface12. Refer to the exhibit. What two commands are required to provide connectivity between the192.168.1.0 and 10.0.0.0 networks without requiring recursive lookup? (Choose two.)• A(config)# ip route 10.0.0.0 255.0.0.0 s 0/1/0• A(config)# ip route 10.0.0.0 255.0.0.0 172.16.40.2• A (config)# ip route 10.0.0.0 255.0.0.0 s 0/0/0• B(config)# ip route 192.168.1.0 255.255.255.0 s 0/0/0• B (config)# ip route 192.168.1.0 255.255.255.0 172.16.40.1• B(config)# ip route 192.168.1.0 255.255.255.0 s 0/1/013. Refer to the exhibit. What two commands will change the next-hop address for the 10.0.0.0/8 network from 172.16.40.2 to 192.168.1.2? (Choose two.)• A(config)# no network 10.0.0.0 255.0.0.0 172.16.40.2• A(config)# no ip address 10.0.0.1 255.0.0.0 172.16.40.2• A(config)# no ip route 10.0.0.0 255.0.0.0 172.16.40.2• A(config)# ip route 10.0.0.0 255.0.0.0 s0/0/0• A(config)# ip route 10.0.0.0 255.0.0.0 192.168.1.214. What happens to a static route entry in a routing table when the outgoing interface is not available? • The route is removed from the table.• The router polls neighbors for a replacement route.• The route remains in the table because it was defined as static.• The router redirects the static route to compensate for the loss of the next hop device.15. A router has one static route to each destination network. Which two scenarios would require an administrator to alter the static routes that are configured on that router? (Choose two.)• The destination network no longer exists.• The destination network is moved to a different interface on the same router.• The path between the source and destination is upgraded with a higher bandwidth link.• A topology change occurs where the exi sting next-hop address or exit interface is not accessible.• The remote destination network interface has to be down for 15 minutes of maintenance.16. Why is it advisable to enter a next-hop IP address when creating a static route whose exit interface is an Ethernet network?• Adding the next-hop address eliminates the need for the router to do any lookups in the routing table before forwarding a packet.• In a multi-access network, the router cannot determine the next-hop MAC address for the Ethernet frame without a next-hop address.• Using a next-hop address in a static route provides a route with a lower metric.• In multi-access networks, using a next-hop address in a static route makes that route a candidate default route.17. The output of the Router# show interfaces serial 0/1 command displays the following:• Serial0/1 is up, line protocol is down.• What is the most likely cause for the line protocol being down?• Serial0/1 is shutdown.• There is no cable connecting the routers.• The remote rout er is using serial 0/0.• No clock rate has been set.18. Refer to the exhibit. Which static route should be configured on Router1 so that host A will be able to reach host B on the 172.16.0.0 network?• ip route 192.168.0.0 172.16.0.0 255.255.0.0• ip rou te 172.16.0.0 255.255.0.0 192.168.0.1• ip route 172.16.0.0 255.255.0.0 S0/0/1• ip route 172.16.0.0 255.255.0.0 S0/0/019. What two devices are responsible for converting the data from the WAN service provider into a form acceptable by the router? (Choose two).• the serial port of the router• a modem• a switch• the ethernet port of the router• a CSU/DSU device• a DTE device20. Which of the following is true regarding CDP and the graphic shown?• CDP running on Router D will gather information about routers A, B, C, and E.• By default, Router A will receive CDP advertisements from routers B and C.• If routers D and E are running different routing protocols, they will not exchange CDP information.• Router E can use CDP to identify the IOS running on Router B.21. Which two statements describe functions or characteristics of CDP? (Choose two.)• It starts up automatically and allows the device to detect directly connected neighbor devices that use CDP.• It operates at the network layer and allows two systems to learn about each other.• It creates a topology map of the entire network.• It allows systems to learn about each other even if different network layer protocols are configured.• It forwards advertisements about routes for faster convergence.22. Which piece of information is available from examining the output of the command show ip interface brief?• Interface speed and duplex• Interface MTU• Errors• Interface MAC address• Interface IP addressCCNA 2 - Chapter 31A network administrator is determining the best placement of VLAN trunklinks. Which two types of point-to-point connections utilize VLAN trunking? (Choose two.)between two switches that share a common VLANbetween a switch and a server that has an 802.1Q NIC*between a switch and a client PCbetween a switch and a network printerbetween two switches that utilize multiple VLANs*2What happens to a port that is associated with VLAN 10 when the administrator deletes VLAN 10 from the switch?The port automatically associates itself with the native VLAN. The port creates the VLAN again.The port goes back to the default VLAN.The port becomes inactive.*3Refer to the exhibit. Interface Fa0/1 is connected to a PC. Fa0/2 is a trunk link to another switch. All other ports are unused. Which security best practice did the administrator forget to configure?Configure all unused ports to a ‘black-hole’ VLAN that is not used f or anything on the network.Disable autonegotiation and set ports to either static access or static trunk.Change the native VLAN to a fixed VLAN that is distinct from all user VLANs and to a VLAN number that is not VLAN 1.All user ports are associated with VLANs distinct from VLAN 1 and distinct from the ‘black-hole’ VLAN.*4Which command is used to remove only VLAN 20 from a switch?no switchport access vlan 20delete flash:vlan.datno vlan 20*delete vlan.dat5A Cisco Catalyst switch has been added to support the use of multiple VLANs as part of an enterprise network. The network technician finds it necessary to clear all VLAN information from the switch in order to incorporate a new network design. What should the technician do to accomplish this task?Erase the startup configuration and reboot the switch.Erase the running configuration and reboot the switch.Delete the startup configuration and the vlan.dat file in the flash memory of the switch and reboot the switch.*Delete the IP address that is assigned to the management VLAN and reboot the switch.6What is the effect of issuing a switchport access vlan 20 command on the Fa0/18 port of a switch that does not have this VLAN in the VLAN database?VLAN 20 will be created automatically.*The command will have no effect on the switch.Port Fa0/18 will be shut down.An error stating that VLAN 20 does not exist will be displayed and VLAN 20 is not created.Which command displays the encapsulation type, the voice VLAN ID, and the access mode VLAN for the Fa0/1 interface?show mac address-table interface Fa0/1show interfaces Fa0/1 switchport*show interfaces trunkshow vlan brief8Place the options in the following order:- not scored -dynamic autononegotiatedynamic desirabletrunk9Port Fa0/11 on a switch is assigned to VLAN 30. If the command no switchport access vlan 30 is entered on the Fa0/11 interface, what will happen?Port Fa0/11 will be returned to VLAN 1.*VLAN 30 will be deleted.An error message would be displayed.Port Fa0/11 will be shutdown.What must the network administrator do to remove Fast Ethernet port fa0/1 from VLAN 2 and assign it to VLAN 3?Enter the no vlan 2 and the vlan 3 commands in global configuration mode. Enter the switchport trunk native vlan 3 command in interface configuration mode.Enter the switchport access vlan 3 command in interface configuration mode.*Enter the no shutdown in interface configuration mode to return it to the default configuration and then configure the port for VLAN 3.11Which two Layer 2 security best practices would help prevent VLAN hopping attacks? (Choose two.)Disable DTP autonegotiation on end-user ports.*Change the management VLAN to a distinct VLAN that is not accessible by regular users.Statically configure all ports that connect to end-user host devices to be in trunk mode.Change the native VLAN number to one that is distinct from all user VLANs and is not VLAN 1.*Use SSH for all remote management access.12In a basic VLAN hopping attack, which switch feature do attackers take advantage of?automatic encapsulation negotiationthe default automatic trunking configuration*an open Telnet connectionforwarding of broadcasts13A Cisco switch currently allows traffic tagged with VLANs 10 and 20 across trunk port Fa0/5. What is the effect of issuing a switchport trunk allowed vlan 30 command on Fa0/5?It allows only VLAN 30 on Fa0/5.*It allows a native VLAN of 30 to be implemented on Fa0/5.It allows VLANs 1 to 30 on Fa0/5.It allows VLANs 10, 20, and 30 on Fa0/5.14Refer to the exhibit. A frame is traveling between PC-A and PC-B through the switch. Which statement is true concerning VLAN tagging of the frame?No VLAN tag is added to the frame.*A VLAN tag is added when the frame is accepted by the switch.A VLAN tag is added when the frame is forwarded out the port to PC-B.A VLAN tag is added when the frame leaves PC-A.15Refer to the exhibit. PC-A and PC-B are both in VLAN 60. PC-A is unable to communicate with PC-B. What is the problem?The native VLAN is being pruned from the link.The VLAN that is used by PC-A is not in the list of allowed VLANs on the trunk.*The trunk has been configured with the switchport nonegotiate command. The native VLAN should be VLAN 60.16What VLANs are allowed across a trunk when the range of allowed VLANs is set to the default value?All VLANs will be allowed across the trunk.*Only the native VLAN will be allowed across the trunk.The switches will negotiate via VTP which VLANs to allow across the trunk. Only VLAN 1 will be allowed across the trunk.17Under which two occasions should an administrator disable DTP while managing a local area network? (Choose two.)on links that should not be trunking*when connecting a Cisco switch to a non-Cisco switch*on links that should dynamically attempt trunkingwhen a neighbor switch uses a DTP mode of dynamic autowhen a neighbor switch uses a DTP mode of dynamic desirable18Open the PT Activity. Perform the tasks in the activity instructions and then answer the question.Which PCs will receive the broadcast sent by PC-C?PC-D, PC-E*PC-A, PC-B, PC-D, PC-EPC-A, PC-BPC-A, PC-B, PC-D, PC-E, PC-FPC-A, PC-B, PC-E19Which two statements are true about VLAN implementation? (Choose two.)The network load increases significantly because of added trunking information.Devices in one VLAN do not hear the broadcasts from devices in another VLAN.*The size of the collision domain is reduced.VLANs logically group hosts, regardless of physical location.*The number of required switches in a network decreases.20Refer to the exhibit. DLS1 is connected to another switch, DLS2, via a trunk link. A host that is connected to DLS1 is not able to communicate to a host that is connected to DLS2, even though they are both in VLAN 99. Which command should be added to Fa0/1 on DLS1 to correct the problem?switchport trunk allowed vlan add 99switchport trunk native vlan 66*switchport mode dynamic autoswitchport nonegotiate21Which switch feature ensures that no unicast, multicast, or broadcast traffic is passed between ports that are configured with this feature?switch port securityPVLAN protected port*ACLVLAN22Fill in the blank. Use the full command syntax.The ” show vlan brief” command displays the VLAN assignment for all ports as well as the existing VLANs on the switch.23Which three statements accurately describe VLAN types? (Choose three).An 802.1Q trunk port, with a native VLAN assigned, supports both tagged and untagged traffic.*A management VLAN is any VLAN that is configured to access management features of the switch.*A data VLAN is used to carry VLAN management data and user-generated traffic.Voice VLANs are used to support user phone and e-mail traffic on a network. VLAN 1 is always used as the management VLAN.After the initial boot of an unconfigured switch, all ports are members of the default VLAN.*24Which command should the network administrator implement to prevent the transfer of DTP frames between a Cisco switch and a non-Cisco switch?S1(config-if)# switchport mode trunkS1(config-if)# switchport mode accessS1(config-if)# switchport nonegotiate*S1(config-if)# switchport mode dynamic desirableS1(config-if)# switchport trunk allowed vlan noneCCNA 2 - Chapter 41What type of IPv6 address is required as a minimum on IPv6 enabled interfaces?staticglobal unicastlink-local*loopbackunique local2In order for packets to be sent to a remote destination, what three pieces of information must be configured on a host? (Choose three.)default gateway*hostnameDNS server addressDHCP server addressIP address*subnet mask*3What two pieces of information are displayed in the output of the show ip interface brief command? (Choose two.)MAC addressesLayer 1 statuses*IP addresses*next-hop addressesinterface descriptionsspeed and duplex settings4Place the options in the following order:next hopdestination networkmetric- not scored -administrative distanceroute timestamproute source protocol- not scored -5Which two items are used by a host device when performing an ANDing operation to determine if a destination address is on the same local network? (Choose two.)destination MAC addressnetwork numberdestination IP address*source MAC addresssubnet mask*6Refer to the exhibit. A network administrator issues the show ipv6 route command on R1. What two conclusions can be drawn from the routing table? (Choose two.)Packets that are destined for the network 2001:DB8:ACAD:2::/64 will be forwarded through Fa0/1.R1 does not know a route to any remote networks.*The interface Fa0/1 is configured with IPv6 address2001:DB8:ACAD:A::12.*Packets that are destined for the network 2001:DB8:ACAD:2::54/128 will be forwarded through Fa0/0.The network FF00::/8 is installed through a static route command.7Refer to the exhibit. What is the purpose of the highlighted field in the line that is displayed from the show ip route command?It indicates that this is a directly connected route.It indicates that this route has been deleted from the routing table. It indicates that this route was learned via EIGRP.*It indicates that this is a default route.8Which two statements correctly describe the concepts of administrative distance and metric? (Choose two.)The metric varies depending which Layer 3 protocol is being routed, such as IP.A router first installs routes with higher administrative distances. The value of the administrative distance can not be altered by the network administrator.Routes with the smallest metric to a destination indicate the best path.* Administrative distance refers to the trustworthiness of a particular route.*The metric is always determined based on hop count.9What are two functions of a router? (Choose two.)It manages the VLAN database.It increases the size of the broadcast domain.It controls the flow of data via the use of Layer 2 addresses.It determines the best path to send packets.*It connects multiple IP networks.*10A packet moves from a host on one network to a device on a remote network within the same company. If NAT is not performed on the packet, which two items remain unchanged during the transfer of the packet from source to destination? (Choose two.)destination MAC addresssource ARP tablesource IP address*destination IP address*source MAC addressLayer 2 header11。

CCN认证试题中文答案

C C N A认证试题一（附答案和解析）中文版(一)1、目前，我国应用最为广泛的LAN标准是基于（）的以太网标准.(A) IEEE 802.1(B) IEEE 802.2(C) IEEE 802.3(D) IEEE 802.5答案：C参考知识点：现有标准：IEEE 802.1 局域网协议高层IEEE 802.2 逻辑链路控制IEEE 802.3 以太网IEEE 802.4 令牌总线IEEE 802.5 令牌环IEEE 802.8 FDDIIEEE 802.11 无线局域网记住IEEE802.1-------IEEE802.5的定义以太网是一种计算机局域网组网技术。

IEEE制定的IEEE 802.3标准给出了以太网的技术标准。

它规定了包括物理层的连线、电信号和介质访问层协议的内容。

以太网是当前应用最普遍的局域网技术。

它很大程度上取代了其他局域网标准，如令牌环、FDDI和ARCNET。

以太网的标准拓扑结构为总线型拓扑，但目前的快速以太网（100BASE-T、1000BASE-T标准）为了最大程度的减少冲突，最大程度的提高网络速度和使用效率，使用交换机（Switch）来进行网络连接和组织，这样，以太网的拓扑结构就成了星型，但在逻辑上，以太网仍然使用总线型拓扑的C***A/CD介质访问控制方法。

电气电子工程师协会或IEEE（Institute of Electrical and Electronics Engineers）是一个国际性的电子技术与信息科学工程师的协会。

建会于1963年1月1日。

总部在美国纽约市。

在150多个国家中它拥有300多个地方分会。

目前会员数是36万。

专业上它有35个专业学会和两个联合会。

IEEE发表多种杂志，学报，书籍和每年组织300多次专业会议。

IEEE定义的标准在工业界有极大的影响。

下面列出：IEEE802．3以太网标准802.3--------- 10Base以太网标准802.3u-------- 100Base-T（快速以太网）802.3z-------- 1000Base-X（光纤吉比特以太网）802.3ab-------- 1000Base-T（双绞线吉比特以太网）答案：CE注：IP地址中关键是看她的主机位，将子网掩码划为二进制，1对应上3、Quidway系列路由器在执行数据包转发时，下列哪些项没有发生变化（假定没有使用地址转换技术）？（）(A) 源端口号(B) 目的端口号(C) 源网络地址(D) 目的网络地址(E) 源MAC地址(F) 目的MAC地址答案：ABCD参考知识点：路由功能就是指选择一条从源网络到目的网络的路径，并进行数据包的转发。

CCNA第章考试答案

C C N A第章考试答案 IMB standardization office【IMB 5AB- IMBK 08- IMB 2C】••试题反馈报告IntroductiontoNetworks(版本-ITN第1章考试以下是针对您未获得满分的试题给出的反馈。

某些交互式试题可能不显示您的答案。

1 某公司正在考虑是使用客户端/服务器还是对等网络。

下列哪三项是对等网络的特征（选择三项。

）正确响应您的响应易于创建同时充当客户端和服务器时设备性能更好可扩展安全性提升缺少集中管理实施成本更少由于不需要使用网络设备和专用服务器，对等网络易于创建，复杂性更低，且成本更少。

而且对等网络也没有集中管理。

这种网络安全性更低，不可扩展，而且那些同时充当客户端和服务器的设备可能性能更差。

此试题参考以下领域的内容：IntroductiontoNetworks•提供网络资源2 哪种设备的功能是确定消息在网际网络中传输的路径？正确响应您的响应路由器防火墙Web服务器DSL调制解调器路由器用于确定消息在网络中的传输路径。

防火墙用于过滤传入和传出的流量。

DSL调制解调器用于为家庭或组织提供Internet连接。

此试题参考以下领域的内容：IntroductiontoNetworks•网络组件3 哪两个条件有助于您从各种网络介质当中选择一种网络介质（请选择两项。

）正确响应您的响应网络上使用的终端设备的成本所选介质可以成功传送信号的距离需要优先处理的数据类型安装在网络中的中间设备的数量要安装所选介质的环境选择网络介质的条件包括：所选介质可以成功传送信号的距离、要安装所选介质的环境、必须传输的数据量和速度以及介质和安装的成本。

此试题参考以下领域的内容：IntroductiontoNetworks•网络组件4 下列哪两项描述了中间设备（选择两项。

）正确响应您的响应中间设备可以引导数据路径。

中间设备可以生成数据内容。

中间设备可以启动封装过程。

中间设备可以更改数据内容。

CCNA学习指南第2章复习题中英文翻译版

CCNA学习指南第2章复习题中英文翻译版1. What are the decimal and hexadecimal equivalents of the binary number 10011101?(Choose two.)1. 二进制数10011101等效的十进制和十六进制数分别是多少？（选择两项。

）A. 159B. 157C. 185D. 0x9DE. 0xD9F. 0x1592. Which of the following allows a router to respond to an ARP request that is intended for a remote host？2. 下列哪一项允许路由器对远端主机的ARP请求做出响应？A. Gateway DP网关DPB. Reverse ARP (RARP)反向ARPC. Proxy ARP代理ARPD. Inverse ARP逆向ARPE. Address Resolution Protocol (ARP)地址解析协议3. You want to implement a mechanism that automates the IP configuration, including IP address, subnet mask, default gateway, and DNS information. Which protocol will you use to accomplish this?3. 你想实现自动IP配置，包括IP地址,子网掩码，默认网关和DNS信息。

你应该使用什么协议来完成这？A. SMTP简单邮件传输协议B. SNMP简单网络管理协议C. DHCP动态主机控制协议D. ARP地址解析协议4. What protocol is used to find the hardware address of a local device?4. 什么协议用来找本地设备的硬件地址？A. RARPB. ARPC. IPD. ICMPE. BootP5. Which of the following are layers in the TCP/IP model? (Choose three.)5. 下列哪些层属于TCP/IP模型？（选择三项。

CISCO_CCNA网络工程师题库

培训大讲堂官方YY 频道：3660mCCNA题库考试代号： 640-802考试时间：英文110+30=140分钟通过分数： 825题库版本： V104.4鸿鹄论坛招募CCNA、CCNP答疑讲师答疑地点：鸿鹄官方YY频道3660鸿鹄大讲堂：bbs.hh010./thread-46172-1-1.htmlCCNA题库战报交流QQ群：144288127 （500人超级群）CCNA题库战报交流区： bbs.hh010./forum-261-1.html1000 G视频教程免费下载：bbs.hh010./forum-228-1.htmlCCNA（640-802）题库V104.4CCNA（640-802）题库V104.4（情人节版）CCNA 题库战报500人超级QQ群 144288127V104系列是官方的终结版本，以后不会再出V105 V106 V108等等CCNA 最新题库/最新战报发布区： bbs.hh010./forum-261-1.html下载官方正版题库、看最新考试战报，请随时关注鸿鹄论坛 bbs.hh010.CCNA考试报名1900，详情请联系鸿鹄全国区十七名客服 QQ 71202306========================================更新容：V104.1修正V104中错误题目，确定经典争议题目答案；V104.2增加拖图题并可完美模拟考试，VCE题库增加中文注释；V104.3针对思科CCNA考试变题，更新考试新增题目93Q,更新V104.2实验题；V104.4增加全文中文注释，汇总V104.3九次更新，删除部分旧题目，为目前最新官方正版题库；2011.8.1 增加每日新题，修订部分错误。

2012.2.14 情人节版增加5道新题，分别是519、520、521、522、523题修改176题、375题、443题、482题答案错误修改59题、88题、453题、107题、270题注释错误增加个别疑难拖图题注释，优化实验题=============================================QUESTION 1When you are logged into a switch, which prompt indicates that you are in privileged mode?(当您登录到交换机，哪种提示表明你在特权模式？)A. %B.C. >D. $E. #Answer: ESection: Chapter 4: Introduction to Cisco IOSExplanation/Reference:特权模式就是#提示符QUESTION 2Which command shows system hardware and software version information?(哪些命令显示系统硬件和软件的版本信息？)A. show configurationB. show environmentC. show inventoryD. show platformE. show versionAnswer: ESection: Chapter 4: Introduction to Cisco IOSExplanation/Reference:查看系统的软件和硬件信息使用的命令是show versionQUESTION 3Cisco Catalyst switches CAT1 and CAT2 have a connection between them using ports FA0/13. An 802. 1Q trunk is configured between the two switches. On CAT1, VLAN 10 is chosen as native, but on CAT2 the native VLAN is not specified.What will happen in this scenario?(思科 Catalyst 交换机 CAT1 和 CAT2 有它们之间的连接使用端口FA0/13。

ccna第二学期练习答案中文

ERouting Chapter 1 - CCNA Exploration: 路由协议和概念(版本4.0)1口令可用于限制对Cisco IOS 所有或部分内容的访问。

请选择可以用口令保护的模式和接口。

（选择三项。

网络管理员已经为路由器连接到直连网络的接口配置了如图所示的IP 地址。

从路由器ping 相连网络上的主机口之间相互ping 都会遭到失败。

此问题最可能的原因是什么？必须使用no shutdown命令启用接口。

4请参见图示。

主机 A ping 主机B。

当R4 收到对以太网接口的ping 时，哪两块报头信息包括在内？（选择两项。

）目的IP 地址：192.168.10.134目的MAC 地址：9999.DADC.12345网络管理员刚把新配置输入Router1。

要将配置更改保存到NVRAM，应该执行哪一条命令？Router1# copy running-config startup-config6您需要配置图中所示的串行连接，必须在Sydney 路由器上发出以下哪条配置命令才能与Melbourne 站点建立连接？（选Sydney(config-if)# ip address 201.100.53.2 255.255.255.0Sydney(config-if)# no shutdownSydney(config-if)# clock rate 560007请参见图示。

从路由器的运行配置输出可得出什么结论？显示的命令决定了路由器的当前运行情况。

8请参见图示。

在主机 2 连接到LAN 上的交换机后，主机2 无法与主机 1 通信。

导致此问题的原因是什么？主机 1 和主机2 位于不同的网络中。

CCNA第章考试答案

••试题反馈报告IntroductiontoNetworks(版本-ITN第3章考试以下是针对您未获得满分的试题给出的反馈。

某些交互式试题可能不显示您的答案。

分项分数：1两台计算机可以使用什么方法来确保数据包不会因为过多数据发送过快而被丢弃？正确响应您的响应封装访问方法流量控制响应超时为使两台计算机能够有效通信，必须具有让源和目标设置数据传输和接收时间的机制。

为了正确接收数据，流量控制可以确保数据不会发送的太快。

此试题参考以下领域的内容：IntroductiontoNetworks•规则2哪种类型的通信会向局域网上的所有设备发送消息？正确响应您的响应广播单播组播全播广播通信是一对所有的通信。

单播通信是一对一的通信。

组播是一对多的通信，其中消息会发送给一组特定主机。

全播不是一个描述消息传输的标准术语。

此试题参考以下领域的内容：IntroductiontoNetworks•规则3哪个过程用于将一个消息放入另一消息内以从源传输到目的地？正确响应您的响应流量控制封装访问控制解码封装是将一种消息格式放入另一种消息格式的过程。

例如，一个数据包在封装成帧时如何将其完整放入数据字段中。

此试题参考以下领域的内容：IntroductiontoNetworks•规则4Web客户端向Web服务器发送一个网页请求。

从客户端的角度来讲，用于准备传输请求的协议栈正确顺序是什么？正确响应您的响应HTTP、TCP、IP、以太网HTTP、IP、TCP、以太网以太网、TCP、IP、HTTP以太网、IP、TCP、HTTP用于控制Web服务器和客户端进行交互的方式。

用于管理Web服务器与客户端之间的每次会话。

负责通过最佳路径传输到目标。

4.以太网从IP获取数据包，并将其格式化以供传输。

此试题参考以下领域的内容：IntroductiontoNetworks•协议5下列有关网络协议的陈述哪项是正确的？正确响应您的响应只有在远程网络中的设备之间交换消息时才需要使用网络协议。

思科CCNA考试答案(全)

CCNA思科考试答案（全）第 1 章考试1一家拥有10 名员工的小型公司使用单个LAN 在计算机之间共享信息。

哪种类型连接适合此公司？由当地电话服务提供商提供的拨号连接能够使公司方便且安全地连接员工的虚拟专用网络通过当地服务提供商建立的私有专用线路通过当地服务提供商提供的宽带服务（如DSL）答案：4解析：对于这种小型办公室，比较适合通过被称为数字用户线路(DSL) 的常见宽带服务实现Internet 连接，这种服务由当地的电话服务提供商提供。

由于员工人数很少，带宽的问题并不突出。

如果公司较大，在远程站点有分支机构，则专用线路会更加适合。

如果公司员工需要通过Internet 与公司联系，则采用虚拟专用网。

2哪种网络情况需要使用WAN？员工工作站需要获取动态分配的IP 地址。

员工在出差时需要通过VPN 连接到公司电子邮件服务器。

分支机构的员工需要与同一园区网络上的另一座建筑物内的公司总部共享文件。

员工需要访问托管在其建筑物内DMZ 中的公司Web 服务器上的网页。

答案：2解析：当出差的员工需要通过WAN 连接到公司电子邮件服务器时，VPN 将通过WAN 连接在员工笔记本电脑与公司网络之间创建一个安全隧道。

通过DHCP 获取动态IP 地址是LAN 通信的功能。

在企业园区的不同建筑物之间共享文件可通过LAN 基础设施来实现。

DMZ 是企业LAN 基础设施内一个受保护的网络。

3以下哪项描述了WAN 的特征？WAN 和LAN 在同一地理范围内运行，但有串行链路。

WAN 网络归运营商所有。

所有串行链路均被视为WAN 连接。

WAN 可提供到园区主干网的终端用户网络连接。

答案：2解析：WAN 可用于将企业LAN 互连到远程分支机构站点LAN 和远程工作人员站点。

WAN 归运营商所有。

虽然WAN 连接一般通过串行接口实现，但并不是所有串行链路均连接至WAN。

LAN（而非WAN）可在组织中提供终端用户网络连接。

4电路交换WAN 技术的两个常见类型是什么？（请选择两项。

CCNA路由部分测试题(含答案)

CCNA路由部分测试题（共50题）1.当路由器接收的IP报文的目的地址不是本路由器的接口IP地址，并且在路由表中未找到匹配的路由项，采取的策略是什么？A.丢掉该分组B.将该分组分片C.转发该分组D.以上答案均不对ANSWER:A2.IGP 的作用范围是？A.区域内B.自然子网范围内C.局域网内D.自治系统内ANSWER:D3.距离矢量协议包括？(多选)A.RIPB.IS-ISC.OSPFD.EIGRPANSWER:A D4.解决路由环问题的办法是？(多选)A.定义路由权的最大值B.路由保持法C.水平分割D.路由器重启ANSWER:A B C5.在rip 中metric 等于什么值为不可达？A.8B.10C.15D.16ANSWER:D6.下列关于OSPF 协议的说法正确的是？(多选)A.OSPF 支持基于接口的报文验证B.OSPF 支持到同一目的地址的多条等值路由C.OSPF 是一个基于链路状态算法的边界网关路由协议D.OSPF 发现的路由可以根据不同的类型而有不同的优先级ANSWER:A B D7.如果一个内部网络对外的出口只有一个，那么最好配置？A.缺省路由B.主机路由C.动态路由ANSWER:A8.以下不属于动态路由协议的是？A.RIPB.ICMPC.EIGRPD.OSPFANSWER:B9.关于矢量距离算法以下哪些说法是错误的？A.矢量距离算法不会产生路由环路问题B.矢量距离算法是靠传递路由信息来实现的C.路由信息的矢量表示法是（目标网络，metric）D.使用矢量距离算法的协议只从自己的邻居获得信息ANSWER:A10.以下哪些路由表项要由网络管理员手动配置？(多选)A.静态路由B.直接路由C.缺省路由D.动态路由ANSWER:A C11.关于RIP 协议，下列说法正确的有？(多选)A.RIP 协议是一种IGPB.RIP 协议是一种EGPC.RIP 协议是一种距离矢量路由协议D.RIP 协议是一种链路状态路由协议ANSWER:A C12.下列关于链路状态算法的说法正确的是？(多选)A.链路状态是对路由的描述B.链路状态是对网络拓扑结构的描述C.链路状态算法本身不会产生自环路由D.OSPF 和RIP 都使用链路状态算法ANSWER:B C13.路由器中时刻维持着一张路由表，这张路由表可以是静态配置的，也可以是什么协议产生的？A.生成树协议B.链路控制协议C.动态路由协议D.被承载网络层协议ANSWER:C14.在路由器中，如果去往同一目的地有多条路由，则决定最佳路由的因素有？(多选)A.路由的优先级B.路由的发布者C.路由的metric 值D.路由的生存时间ANSWER:A C15.下面哪一项正确描述了路由协议？A.允许数据包在主机间转送的一种协议B.定义数据包中域的格式和用法的一种方式C.通过执行一个算法来完成路由选择的一个协议D.指定MAC 地址和IP 地址捆绑的方式和时间的一种协议ANSWER:C16.IGP 包括如下哪些协议？(多选)A.RIPB.BGPC.IS-ISD.EIGRPE.OSPFANSWER:A C D E17.RIP 协议引入路由保持机制的作用是？A.节省网络带宽B.防治网络中形成路由环路C.将路由不可达信息在全网扩散D.通知邻居路由器哪些路由是从其处得到ANSWER:B18.对路由理解正确的是？A.路由是路由器B.路由是信息在网络路径的交叉点C.路由是用以配置报文的目的地址D.路由就是指导报文发送的路径信息ANSWER:D19.路由协议RIP，OSPF和静态路由各自得到了条到达目标网络，在CISCO路由器默认情况下，最终选选定哪种路由作为最优路由？A.RIPB.OSPFC.静态路由ANSWER:C20.在RIP 协议中，计算metric 值的参数是？A.MTUB.时延C.带宽D.路由跳数ANSWER:D21.衡量路由算法好坏的原则不包括？A.快速收敛性B.灵活性，弹性C.拓扑结构先进D.选径是否是最佳ANSWER:C22.RIP 协议是基于？A.UDPB.TCPC.ICMPD.Raw IPANSWER:A23.禁止RIP 协议的路由聚合功能的命令是？A.no route ripB.summanyC.no auto summanyD.undo networkANSWER:C24.解决路由环路的方法有？(多选)A.水平分割B.抑制时间C.毒性逆转D.触发更新ANSWER:A B C D25.路由环问题会引起哪些问题？(多选)A.慢收敛B.广播风暴C.路由器重起D.路由不一致ANSWER:A D26.下列哪些路由协议存在路由自环问题？(多选)A.RIPB.IGRPC.OSPFD.IS-ISE.EIGRPANSWER:A B27.关于RIP V1 和RIP V2，下列说法哪些正确？(多选)A.RIP V1 报文支持子网掩码B.RIP V2 报文支持子网掩码C.RIP V2 缺省使用路由聚合功能D.RIP V1 只支持报文的简单口令认证，而RIP V2 支持MD5 认证ANSWER:B C28.在一个运行OSPF 的自治系统之内？(多选)A.骨干区域自身也必须连通的B.非骨干区域自身也必须连通的C.必须存在一个骨干区域（区域号为0）D.非骨干区域与骨干区域必须直接相连或逻辑上相连ANSWER:A C D29.以下关于Rip 路由聚合的说法正确的是？(多选)A.Rip V1 默认支持路由聚合，需要时可以关闭路由聚合功能B.华为Quidway 系列路由器Rip V2 的实现可以关闭路由聚合功能C.Rip V1 不支持子网路由聚合到一个非自然子网路由D.Rip V2 支持子网路由聚合到一个非自然子网路由ANSWER:B C D30.假设有这样的组网实例:两台路由器（假设为RTA 和RTB）通过串口相接，其中RTA 的串口IP 地址是，RTB 的串口IP 地址是，RTA 通过以太口连接的本地局域网的IP 地址是，RTB 通过以太口连接的本地局域网IP 地址是，在上面所有的接口上都启动RIP V1（仅仅RIP V1）协议，那么，下列说法正确的是？(多选)A.在RTA 的本地局域网上的计算机可以访问在RTB 本地局域网上的计算机B.在RTB 的本地局域网上的计算机可以访问在RTA 本地局域网上的计算机C.在RTA 的本地局域网上的计算机不能访问在RTB 本地局域网上的计算机D.在RTB 的本地局域网上的计算机不能访问在RTA 本地局域网上的计算机ANSWER:C D31.根据路由的目的地不同，路由表可被划分为？(多选)A.子网路由B.直连路由C.缺省路由D.主机路由E.静态路由ANSWER:A D32.对路由器A 配置RIP 协议，并在接口S0（IP 地址为路由协议，在全局配置模式下使用的第一条命令是？A.router ripwork allworkworkANSWER:A33.当接口运行在RIP-2 广播方式时，它可以接受的报文有？(多选)A.RIP-1 广播报文B.RIP-1 组播报文C.RIP-2 广播报文D.RIP-2 组播报文ANSWER:A C34.RIP 协议的路由项在多少时间内没有更新会变为不可达？A.90sB.120sC.180sD.240sANSWER:C35.VLSM 的含义是？A.Variable Length Subnet MaskingB.Variable Length Shortest MaskingC.Very Long/Shortest MaskingD.Variable Long Subnet MaskingE.Variable Length Short MeasurementANSWER:A36.距离矢量路由协议使用水平分割（split horizon）技术的目的是什么？(多选)A.避免在毗邻路由器之间产生路由环路B.确保路由更新数据报文沿着接收路线方向发送C.与保持间隔（holddown）机制协同工作，为保持间隔的计算提供更多的可靠性D.代替路由中毒（poison reverse）算法ANSWER:A C37.作为一个网络维护人员，对于OSPF 区域体系机构的原则必须有清楚地了解，下面的论述表达正确的是？(多选)A.所有的OSPF 区域必须通过边界路由器与区域0 相连，或采用OSPF 虚链路B.所有区域间通信必须通过骨干区域0，因此所有区域路由器必须包含到区域0 的路由C.单个区域不能包含没有物理链路的两个区域边界路由器D.虚链路可以穿越stub 区域ANSWER:A B38.支持可变长子网掩码的路由协议有？(多选)A.RIP v1B.RIP v2C.OSPFD.EIGRPANSWER:B C D39.因为在生成路由表的过程中，OSPF 协议需要进行复杂的SPF 算法来计算网络拓扑结构，所以相对距离矢量路由选择协议来说，它需要更大的开销，更多的延迟，更高的CPU 占用率。

ERouting Final Exam CCNA Exploration路由协议和概念答案

ERouting Final Exam-CCNA Exploration:路由协议和概念(Version4.0)1.Which of the following are required when adding a network to the OSPF routing process configuration?network addressloopback addressa utonomous system numbersubnet maskwildcard maskarea ID2.Which of the following are primary functions of a router?(Choose two.)packet switchingmicrosegmentationdomain name resolutionpath selectionflow control3.Refer to the exhibit.When troubleshooting a network,it is important to interpret the output of various router commands.On the basis of the exhibit,which three statements are true?(Choose three.)The missing information for Blank1is the command show ip route.The missing information for Blank 1 is the command debug ip route.The missing information for Blank 2 is the number 100.The missing information for Blank2is the number120.The missing information for Blank 3 is the letter R.The missing information for Blank3is the letter C.4.Refer to the exhibit.Packets destined to which two networks will require the router to perform a recursive lookup?(Choose two.)10.0.0.0/864.100.0.0/16128.107.0.0/16172.16.40.0/24192.168.1.0/24192.168.2.0/245.When would the network administrator use the ip bandwidth-percent eigrp as-number percent command?when there is a low bandwidth connectionwhen the connection is on a shared mediumwhen the connection is serial instead of Ethernetwhen the link is always busy6.Refer to the exhibit.Cost for each path are shown.If all routers are configured to use OSPF,what would be the path of a packet sent from Router C to Router D if Router A was down?C-B-E-DC-B-A-D C-F-E-DC-F-B-A-D C-F-E-A-D7.What OSPF packet type is used to elect the designated router(DR)and backup designated router(BDR)on multiaccess networks?helloLSULSRDBDLSAck8.Refer to the exhibit.The hosts on the R1LAN are unable to access the Internet.What is incorrectly configured?the IP address of the Fa0/0 interface at R1the IP address of the S0/0/1 interface at R2the IP address of the S0/0/0interface at R1the subnet mask of the S0/0/1 interface at R29.Refer to the exhibit.Which summarization should R1use to advertise its networks to R2? 192.168.1.0/24192.168.0.0/24192.168.0.0/22192.168.1.0/2210.Refer to the exhibit.What are two of the routes added to the routing table of R1? (Choose two.)R 172.16.1.0/24 [120/1] via 192.168.3.0, 00:00:24, Serial0/0/0R192.168.1.0/24[120/1]via172.16.2.1,00:00:24,Serial0/0/1R 192.168.9.0/24 [120/1] via 172.16.1.2, 00:00:24, Serial0/0/0R192.168.100.0/24[120/1]via172.16.1.1,00:00:24,Serial0/0/0R 192.168.2.0/24 [120/1] via 172.16.1.2, 00:00:24, Serial0/0/011.A router boots and enters setup mode.What is the reason for this?The IOS image is corrupt.Cisco IOS is missing from flash memory.The configuration file is missing from NVRAM.The POST process has detected hardware failure.12.Refer to the exhibit.A router learns a route to the192.168.6.0network,as shown in the output of the show ip rip database command.However,upon running the show ip routecommand,the network administrator sees that the router has installed a different route to the192.168.6.0network learned via EIGRP.What could be the reason for the missing RIP route?Compared to RIP,EIGRP has a lower administrative distance.Compared to EIGRP, RIP has a higher metric value for the route.Compared to RIP, the EIGRP route has fewer hops.Compared to RIP, EIGRP has a faster update timer.13.All routers in a network are configured in a single OSPF area with the same priority value.No loopback interface has been set on any of the routers.Which secondary value will the routers use to determine the router ID?The highest MAC address among the active interfaces of the network will be used.There will be no router ID until a loopback interface is configured.The highest IP address among the active FastEthernet interfaces that are running OSPF will be used.The highest IP address among the active interfaces will be used.14.Refer to the exhibit.Routers R1and R2are directly connected via their serial interfaces and are both running the EIGRP routing protocol.R1and R2can ping the directly connected serial interface of their neighbor,but they cannot form an EIGRP neighbor adjacency.What action should be taken to solve this problem?Enable the serial interfaces of both routers.Configure EIGRP to send periodic updates.Configure the same hello interval between the routers. Configure both routers with the same EIGRP process ID.15.Refer to the exhibit.The interfaces of all routers are configured for OSPF area0.R3can ping R1,but the two routers are unable to establish a neighbor adjacency.What should the network administrator do to troubleshoot this problem?Check if the interfaces of the routers are enabled.Check the hello and dead intervals between the routers.Check the process ID of both routers.Check if CDP is enabled on all the routers.16.Refer to the exhibit.The hosts that are connected to R2are unable to ping the hosts that are connected to R1.How can this problem be resolved?Configure the router ID on both routers.Configure the R2router interfaces for area0.Configure a loopback interface on both routers.Configure the proper subnet masks on the router interfaces.17.Refer to the exhibit.The command ip route0.0.0.00.0.0.0S0/0/0is run on router R2. What are the two results of this command?(Choose two.)A static route will be updated in the routing table.The traffic from the Internet will be directed to R2.The traffic from the source network 172.16.0.0/22 will be blocked.The route will be specified as the default route for all networks not defined in the routing table.All the broadcasts will be forwarded via the S0/0/0 interface of R2.18.Refer to the exhibit.All routers are properly configured with default configurations and are running the OSPF routing protocol.The network is fully converged.A host on the 192.168.3.0/24network is communicating with a host on the192.168.2.0/24network.Which path will be used to transmit the data?The data will be transmitted via R3-R2.The data will be transmitted via R3-R1-R2.The traffic will be load-balanced between two paths — one via R3-R2, and the other via R3-R1-R2.The data will be transmitted via R3-R2, and the other path via R3-R1-R2 will be retained as the backup path.19.Refer to the exhibit.What is the meaning of the highlighted value120?It is the metric that is calculated by the routing protocol.It is the value that is used by the DUAL algorithm to determine the bandwidth for the link.It is the administrative distance of the routing protocol.It is the hold-down time, measured in seconds, before the next update.20.In a complex lab test environment,a router has discovered four paths to192.168.1.0/24 via the use of the RIP routing process.Which route will be installed in the routing table after the discovery of all four paths?R 192.168.1.0/24 [120/3] via 192.168.110.1, 00:00:17, Serial0/1/0R 192.168.1.0/24 [120/2] via 192.168.200.1, 00:00:17, Serial0/0/0R192.168.1.0/24[120/1]via192.168.100.1,00:00:17,Serial0/0/1R 192.168.1.0/24 [120/4] via 192.168.101.1, 00:00:17, Serial0/1/121.Refer to the exhibit.PC1is unable to access the Internet.What is the cause of the problem?An incorrect IP address is configured between the two routers. No static route is configured on Router2.A routing loop has occurred.No routing protocol is configured on either of the two routers.22.How does route poisoning prevent routing loops?New routing updates are ignored until the network has converged.Failed routes are advertised with a metric of infinity.A route is marked as unavailable when its Time to Live is exceeded.The unreachable route is cleared from the routing table after the invalid timer expires.23.Which statement is true about the metrics used by routing protocols?A metric is a value used by a particular routing protocol to compare paths to remote networks.A common metric is used by all routing protocols.The metric with the highest value is installed in the routing table.The router may use only one parameter at a time to calculate the metric.24.Which statement correctly describes a feature of RIP?RIP is a link-state routing protocol.RIP uses only one metric—hop count—for path selection.Advertised routes with hop counts greater than 10 are unreachable.Messages are broadcast every 10 seconds.25.Refer to the exhibit.OSPF is used for the routing protocol and all interfaces are configured with the correct IP addresses and subnet masks.During testing,it is found that router R1is unable to form an adjacency with R2.What is the cause of this problem?Both routers have been configured with incorrect router IDs.Both routers have been configured in different OSPF areas.Both routers have been configured with an incorrect network type.Both routers have been configured with different hello and dead intervals.26.A network administrator is in charge of two separate networks that share a single building.What device will be required to connect the two networks and add a common connection to the Internet that can be shared?hubrouteraccess pointEthernet switch27.Which network and mask combination requires the use of a classless addressing solution?10.32.0.0/11172.16.0.0/12192.168.0.0/24192.168.128.32/2728.A company is using static routes that are configured with an administrative distance of “1”on all routers in the network.The network administrator decides to introduce a dynamic routing protocol to reduce the manual configurations for the static routes.Which optionidentifies the correct procedure for the dynamic routing to take place in the network?The static routes and the dynamic routes will have the traffic alternate between them.The static routes will be automatically removed once the dynamic routing is configured.The static routes will be automatically updated with the next hop IP address once the dynamic routing is configured.The static routes must be manually removed from all routers in order for the dynamic routes to be installed in the routing table.29.Refer to the exhibit.Based on the partial output in the exhibit,why can users establish a console connection to this router without entering a password?The login command was not entered on the console line.The enable password should be an enable secret password.No username and password combination has been configured.Console connections cannot be configured to require users to provide passwords.30.Refer to the exhibit.When a static IP address is being configured on the host,what address should be used for the default gateway?10.1.1.110.1.1.2172.16.1.1192.168.1.131.Refer to the exhibit.The entire192.168.1.0network has been allocated to address hosts in the diagram.Utilizing VLSM with contiguous address blocks,which set of addresses andprefixes could be used to create an addressing solution with a minimum waste of IP addresses?Correct answer is image4.32.Refer to the exhibit.The network is configured for OSPF routing with default settings. The bandwidths have been configured correctly for each link.If the T1link between router A and router E fails,what path will a packet from router A take to reach the LAN attached to router F when the network has converged?A, B, C, FA, B, C, E, FA, D, G, E, FA,D,G,H,F33.Which candidate route has the longest match for a packet with a destination address of10.30.16.48?10.30.0.0/1610.30.15.0/2310.30.16.0/2410.30.16.32/2710.30.16.32/3034.Refer to the exhibit.The network is configured with RIPv2.However,network administrators notice that communication cannot be successfully completed from one LAN to another.A network administrator issues the show ip route command on the HQ router. Based on the output,what should be done to correct the problem?Disable the load balancing feature of RIPv2.Issue the no auto-summary command for RIPv2.Replace RIPv2 with EIGRP which supports VLSM.Make sure that the network statements include the correct subnet mask.35.Which multicast address does EIGRP use to send hello and updates packets?224.0.0.5224.0.0.6224.0.0.9224.0.0.1036.Refer to the exhibit.Why is the state of the serial0/0/0interface administratively down?An IP address has not been configured on the interface.The WIC was installed into the incorrect slot on the router.The default encapsulation on the interface has been modified.The no shutdown command has not been executed on the interface.37.Refer to the exhibit.How was the OSPF default gateway entry for R2determined? Default routes are automatically injected by OSPF into all advertisements.A static default gateway route is defined in the configuration of R2.The default-information originate command is applied on R1.The ISP defines the gateway of last resort and automatically passes it to R1 and R2.The ip default-gateway command is applied on R2.38.Refer to the exhibit.RIPv1has been properly configured on all routers in the network. However,users on LAN2have intermittent connectivity with the users on LAN1and LAN3. What is the cause of the problem?Both LAN networks are separated from router R2 with a variably subnetted Class C network 209.165.200.0/30.Neither router R1 nor router R3 has a static route configured that points to the variably subnetted 172.16.0.0/24 networks.Both routers R1and R3are sending the summarized172.16.0.0/16network to R2in their RIPv1routing updates.Both networks 172.16.1.0/24 and 172.16.100.0/24 are configured with a subnet mask different from the default classful mask.39.Which default EIGRP configuration must be modified to allow an EIGRP router to advertise subnets that are configured with VLSM?split horizonmetric K valuesautosummarizationhello and dead intervals40.What is a successor for a destination network in an EIGRP network?the next hop on the primary route with the largest feasible distance to the destinationthe next hop on the primary route with the smallest feasible distance to the destination41.Refer to the exhibit.Which route will be removed from the routing table if manual EIGRP summarization is disabled on the Serial0/0/0interface of Router3?0.0.0.0/0172.16.0.0/16172.16.1.0/24172.16.3.0/3042.Which port can be used for initial router configuration?AUXvty 0s0/0/0console43.Which two link-state routing protocol challenges does OSPF resolve through the election of a DR?(Choose two.)the extensive flooding of LSAs throughout the OSPF areathe excessive adjacencies when the number of routers increasesthe requirement for link-state database updates to be propagated between OSPF areasthe heavy CPU load that is imposed because each router must compute shortest paths by using the SPF algorithmthe requirement for each router to build a topological database of the internetwork to determinet he shortest paths between networks44.A routing table shows an EIGRP route to192.168.1.0/24with a metric of301440.What other term also describes this EIGRP metric value?feasible distancereported distancefeasible successorfeasibility condition45.Refer to the exhibit.The network administrator has run the following command on R1.R1(config)#ip route192.168.2.0255.255.255.0172.16.1.2What is the result of running this command?Traffic for network192.168.2.0is forwarded to172.16.1.2.This route is automatically propagated throughout the entire network.Traffic for all networks is forwarded to 172.16.1.2.The command invokes a dynamic routing protocol for 192.168.2.0.46.Refer to the exhibit.What will happen if interface Serial0/0/1goes down on Router1? The Dijkstra algorithm will calculate the feasible successor.DUAL will query neighbors for a route to network192.168.1.0.Neighbor 172.16.3.2 will be promoted to the feasible successor.Traffic destined to the 192.168.1.0 network will be dropped immediately due to lack of a feasible successor.47.Refer to the exhibit.A network administrator is accessing router R1from the console port.Once the administrator is connected to the router,which password should the administrator enter at the R1>prompt to access the privileged EXEC mode?Cisco001Cisco123Cisco789Cisco90148.Refer to the exhibit.Which option will provide the configuration that is needed for router R1to dynamically learn routes to the192.168.100.16/28,192.168.100.32/28,and 192.168.100.48/28subnetworks?with static routeswith a routed protocolwith a routing protocolwith directly connected routes49.Refer to the exhibit.What will happen when the router reloads?It will boot into ROMMON mode.It will ignore the start-up configuration file.It will look for the start-up configuration file on the TFTP server.It will attempt to load the start-up configuration file that is stored in NVRAM.50.On a router,which actions can be performed in user mode?perform password recoverymake global configuration changesview status of various router functionsmake changes to a specified interface。

CCNA新版题库知识点总结_CCNA(200-120)_CCNA新版题库

只要接口口双 UP 代表运行行正常； admini down 不予考虑
Rooter ID ，选择最大大的 lookback 地址
默认⺴网网关ip default-network； ip route 0.0.0.0 0.0.0.0 xxxxxx
show version 查看上次重启的命令
show ip interface 可以查看应用用的ACL
好处：protect security； eliminated re-address
static NAT:present in NAT table;allowed connection from
PVC 持久虚拟电路，根据两端的 DLCI 建立立一一条 PVC
如果CIR exceed ，所有超过的流量抛弃
farm reply map ，dymanic
means inverse ARP
known DLCI to IP address
overload - BECN 涉及到LMI 点到点子子接口口的特性：每个接口口一一个子子⺴网网、类似专线
注意是单选还是多选选2个还是选3个，一一定看清楚别漏选
思科不存在 tracert 命令 STP 运算
注意事项
本页已使用福昕阅读器进行编辑。福昕软件（Ｃ）２００５－２００９，版权所有，仅供试用。
CCNA200-1202014年10月最新版题库知识点总结
V1不支支持 VLSM RIP
eigrp的AS号码必须一一致.负责将不能够形成邻居关系所以也就不能够进行行路由update
远程配置交换机需要设置交换机⺴网网关
不同 VLAN 的主机 telnet 交换机需要设置交换机⺴网网关
leased，periodly contract DHCP server

CCNA认证考试真题

为⼤家收集整理了《CCNA认证考试真题》供⼤家参考，希望对⼤家有所帮助（1）TCP/IP Addressing and Protocol1: Your junior network administrator wants to know what the default subnet mask is for a Class C IP address. What do you tell him?A. 255.0.0.0B. 255.255.0.0C. 255.245.255.0D. 255.255.255.0E. 255.255.255.255 2: An application needs to have reliable, end-to-end connect-ivity. Which of the following protocols will give you reliable connectivity?A. TCPB. UDPC. IPD. ICMP 3: You are designing a network, which needs to support 55 users. You don't plan to extend the segment beyond the current number of users. Which subnet mask would best meet your needs?A. 255.255.0.0B. 255.255.255.0C. 255.255.255.192D. 255.255.255.160 4: You have added a new switch to your network. You want to manage it remotely, so you need to assign it an IP address. Your router that connects to the switch has an IP address of 172.16.12.33/27. Which of the following addresses can you assign to this switch?A. 172.16.12.33/28B. 172.16.12.32/27C. 172.16.12.33/27D. 172.16.12.34/27E. 172.16.12.35/28F. 172.16.12.38/28G. 172.16.12.63/27 5: The address 172.16.208.16/20 is a host address in which of the following subnets? A. 172.16.176.0–255.255.240.0B. 172.16.192.0–255.255.240.0C. 172.16.208.0–255.255.240.0D. 172.16.224.0–255.255.240.0 6: You are designing an IP address scheme for your brand new remote office. The vice president of IT calls to tell you that you will be in charge of the 192.168.1.64/26 subnetwork. This supplies you with a single subnetwork with 62 hosts. You need to have at least two subnets with 14 hosts in each subnet. What custom subnet mask should you use?A. 255.255.255.128B. 255.255.255.192C. 255.255.255.224D. 255.255.255.240E. 255.255.255.248 7: You have subnetted the 210.106.14.0 network with a /24 mask. Your boss at Acme, Inc. wants to know how many usable subnetworks and usable host addresses per subnet this would provide. What should you tell her?A. One network with 254 hostsB. Two networks with 128 hostsC. Four networks with 64 hostsD. Six networks with 30 hosts 8: Identify three valid host addresses in any subnet of the 201.168.27.0 network, assuming a fixed subnet mask of 255.255.255.240. (Choose three.)A. 201.168.27.33B. 201.168.27.112C. 201.168.27.119D. 201.168.27.126E. 201.168.27.175F. 201.168.27.208 9: What is the subnetwork address for a host with the IP address 201.100.5.68/28?A. 201.100.5.0B. 201.100.5.32C. 201.100.5.64D. 201.100.5.65E. 201.100.5.31F. 201.100.5.1 10: Which of the following protocols uses a three-way handshake mechanism to establish sessions?A. TCPB. IPC. UDPD. IPXE. Frame relay 11: Which of the following protocols is connection-oriented? A. TCPB. IPC. IPXD. Frame relay 12: You are using an application on your Windows 2000 client machines that provides error correction. You need a protocol to provide fast transport. Which protocol should your application use?A. TCPB. IPC. UDPD. SPXE. AppleTalk 13: When using TCP, after a session is open, the applications can adjust the number of segments they receive before sending an acknowledgment. This behavior is known as ______________.A. MTU adjustmentB. WindowingC. Flexible Send PathD. FCS 14: If the destination did not receive a segment, how will the TCP host know to resend the information?A. The ACK received will not include the segment number that was not received.B. The ACK received will include the segment number that was not received.C. The sending host will send a PACK to verify segment receipt.D. The destination host will send a YACK message back to the sending host. 15: You are planning on using a single network that supports 208 users. Which IP address class would you choose to be the most efficient?A. Class AB. Class BC. Class CD. Class DE. Class E 16: RFC 1918 defines the private IP address ranges. Which of the following IP addresses are considered part of these ranges? (Choose three.)A. 10.23.45.67B. 126.21.34.56C. 172.16.32.1D. 172.31.234.55E. 192.169.4.5 17: A new network is being designed for your company, Acme, Inc. If you use a Class C IP network, which subnet mask will provide one usable subnet per department while allowing enough usable host addresses for each department specified in the table?Department Number of Users Corporate 7 Customer Support 15 Financial 13 HR 7 Engineering 16 A. 255.255.255.0B. 255.255.255.192C. 255.255.255.224D. 255.255.255.240E. 255.255.255.248 18: Which of these protocols provides data transport, relying on the error correction capabilities of the application itself?A. UDPB. TCPC. SNMPD. ICMP 19: Which of the following are used by TCP to ensure reliable delivery of data? (Choose two.)A. MAC address resolutionB. Sequence numbersC. AcknowledgmentsD. PingE. Routing updates 20: You discover that you are able to adjust the window size of the TCP segment. You increase the window size to test the results. What will you observe happening on your network?A. Increased throughputB. Decreased throughputC. Increased latencyD. Decreased reliability21: Your organization is using the 192.168.1.0/24 address space. You need 28 subnets. What subnet mask would you use to create these subnets?A. 255.255.255.0B. 255.255.255.128C. 255.255.255.192D. 255.255.255.224E. 255.255.255.240F. 255.255.255.248 22: Which of the following protocols maps IP addresses to MAC addresses for connectivity to occur between two hosts?A. ARPB. RARPC. SLARPD. DHCP 23: Your junior network administrator cannot seem to ping a host in another network and asks you why it isn't working. Which of the following is not an answer that you would give him?A. The host's default gateway is down.B. The destination host is not powered on.C. The IP address of the router interface is incorrect.D. The IP address of the switch to which the destination host connects is incorrect.E. The host is in a different subnet. 24: Which of the following classes of IP addresses is utilized for multicasting?A. Class AB. Class BC. Class CD. Class D 25: You give your IT department a spreadsheet of IP addresses and their subnets. You receive a call from one of the junior techs asking what the /26 means next to the IP addresses. You tell her: A. It represents the number of hosts possible on that subnetwork.B. It represents the number of subnetworks that are being used.C. It represents the class of IP address being used.D. It represents the number of bits in the subnet mask that are 1. 26: You are given an IP network of 192.168.5.0 and told that you need to separate this network into subnetworks that can support a maximum of 16 hosts per subnet. This will help alleviate congestion on the network. What subnet mask can you use to create the subnets necessary to meet the given criteria?A. 255.0.0.0B. 255.255.0.0C. 255.255.255.0D. 255.255.255.224E. 255.255.255.240 27: Which of the following would a Class A network be assigned to?A. Government agencyB. Small-to-medium sized corporationD. An individual 28: A client has the IP address 192.168.5.98/27. Which of the following addresses are on the same subnet as this host? (Choose two.)A. 192.168.5.95B. 192.168.5.100C. 192.168.5.128D. 192.168.5.110 29: Which of the following IP addresses is not a public IP address that can be routed over the Internet?A. 2.3.4.5B. 11.12.13.14C. 165.23.224.2D. 172.31.45.34E. 203.33.45.22 30: You are given a Class B network. What is the default subnet mask assigned to the Class B network?A. 255.255.255.255B. 255.255.0.0C. 255.224.0.0D. 0.0.0.0 31: You are troubleshooting your router's interfaces. For some reason, the Ethernet interface will not accept the IP address of 192.168.5.95/27 that you've assigned. Which of the following explains the router's refusal to take the IP address?A. Class C addresses cannot be assigned to Ethernet interfaces.B. The /27 is an invalid mask.C. It is a broadcast address.D. It is a public IP address.E. It is a private IP address. 32: You are a network technician at Acme, Inc. You are required to divide the 172.12.0.0 network into subnets. Each subnet must have the capacity of 458 IP addresses. Also, according to the requirements, you must provide the maximum number of subnets. Which subnet mask should you use?A. 255.255.255.254B. 255.255.254.0C. 255.255.240.254D. 255.255.0.0 33: What is the subnetwork and broadcast IP address of 192.168.2.37 with the subnet mask of255.255.255.248?A. 192.168.2.24/192.168.2.31B. 192.168.2.32/192.168.2.39C. 192.168.2.40/192.168.2.47D. 192.168.2.48/192.168.2.55E. 192.168.2.56/192.168.2.63 34: One of your co-workers at Acme, Inc., needs to convert the binary number 11011010 into a decimal. What is the decimal equivalent?A. 218B. 219C. 220E. 222 35: One of your co-workers at Acme, Inc., needs to convert the binary number 01011010 into a decimal. What is the decimal equivalent?A. 75B. 83C. 90D. 97 36: One of your co-workers at Acme, Inc., needs to convert the binary num b e r 1 1 0 1 0 1 1 0 i n t o a d e c i m a l . W h a t i s t h e d e c i m a l e q u i v a l e n t ? / p > p b d s f i d = " 2 1 0 " > A . 1 9 8 / p > p b d s f i d = " 2 1 1 " > B . 2 1 4 / p > p b d s f i d = " 2 1 2 " > C . 2 5 2 / p > p b d s f i d = " 2 1 3 " > D . 2 5 5 3 7 : O n e o f y o u r c o - w o r k e r s a t A c m e , I n c . , n e e d s t o c o n v e r t t h e b i n a r y n u m b e r 1 0 1 1 0 1 1 0 i n t o a d e c i m a l . W h a t i s t h e d e c i m a l e q u i v a l e n t / p > p b d s f i d = " 2 1 4 " > A . 1 8 2 / p > p b d s f i d = " 2 1 5 " > B . 1 9 2 / p > p b d s f i d = " 2 1 6 " > C . 2 0 2 / p > p b d s f i d = " 2 1 7 " > D . 2 1 2 3 8 : Y o u a r e c o n f i g u r i n g a s u b n e t f o r t h e A c m e , I n c . , b r a n c h o f f i c e i n B e i j i n g . Y o u n e e d t o a s s i g n I P a d d r e s s e s t o h o s t s i n t h i s s u b n e t . Y o u h a v e b e e n g i v e n t h e s u b n e t m a s k o f 2 5 5 . 2 5 5 . 2 5 5 . 2 2 4 . W h i c h o f t h e s e I P a d d r e s s e s w o u l d b e v a l i d ? ( C h o o s e t h r e e . ) / p > p b d s f i d = " 2 1 8 " > A . 1 5 . 2 3 4 . 1 1 8 . 6 3 / p > p b d s f i d = " 2 1 9 " > B . 9 2 . 1 1 . 1 7 8 . 9 3 / p > p b d s f i d = " 2 2 0 " > C . 1 3 4 . 1 7 8 . 1 8 . 5 6 / p > p b d s f i d = " 2 2 1 " > D . 1 9 2 . 1 6 8 . 1 6 . 8 7 / p > p b d s f i d = " 2 2 2 " > E . 2 0 1 . 4 5 . 1 1 6 . 1 5 9 / p > p b d s f i d = " 2 2 3 " > F . 2 1 7 . 6 3 . 1 2 . 1 9 2 3 9 : Y o u a r e a n e t w o r k t e c h n i c i a n a t A c m e , I n c . Y o u h a v e s u b n e t t e d t h e 2 0 8 . 9 8 . 1 1 2 . 0 n e t w o r k w i t h a / 2 8 m a s k . Y o u r b o s s a s k s y o u h o w m a n y u s a b l e s u b n e t w o r k s a n d u s a b l e h o s t a d d r e s s e s p e r s u b n e t t h i s w i l l p r o v i d e . W h a t s h o u l d y o u t e l l h e r , a s s u m i n g y o u r r o u t e r i s u s i n g i p s u b n e t - z e r o ? / p > p b d s f i d = " 2 2 4 " > A . 62 n e t w o r k s a n d 2 h o s t s / p > p b d s f i d = " 2 2 5 " > B . 6 n e t w o r k s a n d3 0 h o s t s / p > p b d s f i d = " 2 2 6 " >C . 8 n e t w o r k s a n d 3 2 h o s t s / p > p b d s f i d = " 2 2 7 " >D . 1 6 n e t w o r k s a n d 1 6 h o s t s / p > p b d s f i d = " 22 8 " > E . 1 6 n e t w o r k s a n d 1 4 h o s t s 4 0 : W h a t i s a d i s a d v a n t a g e o f u s i n g a c o n n e c t i o n - o r i e n t ed p r o t o c o l s u c h a s T C P ? / p > p b d s f i d = " 2 2 9 " > A . P a c ke t a c k n o w l e d g m e n t m i g h t a d d o v e r h ea d . / p > pb d s f i d = " 2 3 0 " > B . P ac k e t s a r e n o t t a g g ed w i t h se q u e n c e n u m b e r s . / p > p b d sf i d = " 23 1 " > C . L o s s o r d u p l i c a t i o n o f d a t a p a c k e t s i s m o r e l i k e l y t o o c c u r . / p > p b d s f i d = " 2 3 2 " > D . Th e a p p l i c a t i o n l a y e r m u s t a s s u m e r e s p o n s i b i l i t y f o r t h e c o r r e c t s e q u e n c i n g o f t h e d a t a p ac k e t s . 4 1 : Y o u a r e a n e t w o r k t e c h n i c i a n a t A c m e , I n c . Y o u h a v e s u b n e t t ed t he 1 9 2 . 1 6 8 . 7 2 .0 n e t w o r k w i t h a / 3 0 m a s k f o r c o n n e c t i o n s b e t w e e n y o u r r o u t e r s . Y o u r b o s s a s k s y o u h o w m a n y u s a b l e s u b n e t w o r k s a n d u s a b l e h o s t a d d r e s s e s p e r s u b n e t t h i s w i l l p r o v i d e . W h a t s h o u l d y o u t e l l h e r , a s s u m i n g y o u r r o u t e r c a n n o t u s e i p s u b n e t - z e r o ? / p > p b d s f i d = " 2 3 3 " > A . 6 2 n e t w o r k s a n d 2 h o s t s / p > p b d s f i d = " 2 3 4 " > B . 6 n e t w o r k s a n d 3 0 h o s t s / p > p b d s f i d = " 2 3 5 " > C .8 n e t w o r k s a n d 3 2 h o s t s / p > p b d s f i d = " 2 3 6 " > D . 1 6 n e t w o r k s a n d 1 6 h o s t s / p > p b d s f i d = " 2 3 7 " > E . 1 4 n e t w o r k s a n d 1 4 h o s t s 4 2 : W h i c h o f t h e f o l l o w i n g I P a d d r e s s e s a r e c o n s i d e r e d " n e t w o r k " a d d r e s s e s w i t h a / 2 6 p r e f i x ? ( C h o o s e t w o . ) / p > p b d s f i d = " 2 3 8 " > A . 1 6 5 . 2 0 3 . 2 . 0 / p > p b d s f i d = " 2 3 9 " > B . 1 6 5 . 2 0 3 . 5 . 1 9 2 / p > p b d s f i d = " 2 4 0 " > C . 1 6 5 . 2 0 3 . 6 . 6 3 / p > p b d s f i d = " 2 4 1 " > D . 1 6 5 . 2 0 3 . 6 . 1 9 1 / p > p b d s f i d = " 2 4 2 " > E . 1 6 5 . 2 0 3 . 8 . 2 5 5 4 3 : I d e n t i f y t h r e e v a l i d h o s t s i n a n y s u b n e t o f 1 9 2 . 1 6 8 . 3 2 . 0 , a s s u m i n g t h e s u b n e t m a s k u s e d i s 2 5 5 . 2 5 5 . 2 5 5 . 2 4 0 . ( C h o o s e t h r e e . ) / p > p b d s f i d = " 2 4 3 " > A . 1 9 2 . 1 6 8 . 3 2 . 3 3 / p > p b d s f i d = " 2 4 4 " > B . 1 9 2 . 1 6 8 . 3 2 . 1 1 2 / p > p b d s f i d = " 2 4 5 " > C . 1 9 2 . 1 6 8 . 3 2 . 1 1 9 / p > p b d s f i d = " 2 4 6 " > D . 1 9 2 . 1 6 8 . 3 2 . 1 2 6 / p > p b d s f i d = " 2 4 7 " > E . 1 9 2 . 1 6 8 . 3 2 . 1 7 5 / p > p b d s f i d = " 2 4 8 " > F . 1 9 2 . 1 6 8 . 3 2 . 2 0 8 4 4 : A C l a s s C n e t w o r k a d d r e s s h a s b e e n s u b n e t t e d w i t h a / 2 7 m a s k . W h i c h o f t h e f o l l o w i n g a d d r e s s e s i s a b r o a d c a s t a d d r e s s f o r o n e o f t h e r e s u l t i n g s u b n e t s ? / p > p b d s f i d = " 2 4 9 " > A . 1 9 8 . 5 7 . 7 8 . 3 3 / p > p b d s fi d = " 2 5 0 " > B . 1 9 8 . 5 7 . 7 8 . 6 4 / p > p b d s f i d = " 2 5 1 " > C . 1 9 8 . 5 7 . 7 8 . 9 7 / p > p b d s f i d = " 2 5 2 " > D . 1 98 . 5 7 . 7 8 . 9 7 / p > p b d s f i d = " 2 5 3 " > E . 1 9 8 . 5 7 . 7 8 . 1 5 9 / p > p b d s f i d = " 2 5 4 " > F . 1 9 8 . 5 7 . 7 8 . 2 5 4 4 5 : W h a t i s t h e s u b n e t w o r k a d d r e s s f o r a h o s t w i t h I P a d d r e s s 1 6 5 . 1 0 0 . 5 . 6 8 / 2 8 ? / p > p b d s f i d = " 2 5 5 " > A . 1 6 5 . 1 0 0 . 5 . 0 / p > p b d s f i d = " 2 5 6 " > B . 1 6 5 . 1 0 0 . 5 . 3 2 / p > p b d s f i d = " 2 5 7 " > C . 1 6 5 . 1 0 0 . 5 . 6 4 / p > p b d s f i d = " 2 5 8 " > D . 1 6 5 . 1 0 0 . 5 . 6 5 / p > p b d s f i d = " 2 5 9 " > E . 1 6 5 . 1 0 0 . 5 . 3 1 / p > p b d s f i d = " 2 6 0 " > F . 1 6 5 . 1 0 0 . 5 . 1 4 6 : Y o u r b o s s w a n t s t o k n o w w h a t T C P s t a n d s f o r . W h a t d o y o u t e l l h i m ? / p > p b d s f i d = " 2 6 1 " > A . T r a n s m i s s i o n C h e c k P r o t o c o l / p > p b d s f i d = " 2 6 2 " > B . T r a n s p o r t C h e c k P r o t o c o l / p > p b d s f i d = " 2 6 3 " > C . T r a n s m i s s i o n C o n t r o l P r o t o c o l / p > p b d s f i d = " 2 6 4 " > D . T r a n s p o r t C o n t r o l P r o t o c o l 4 7 : Y o u r b o s s w a n t s t o k n o w w h a t U D P s t a n d s f o r . W h a t d o y o u t e l l h i m ? / p > p b d s f i d = " 2 6 5 " > A . U n r e l i a b l e D a t a P r o t o c o l / p > p b d s f i d = " 2 6 6 " > B . U n r e l i a b l e D a t a P r o g r a m / p > p b d s f i d = " 2 6 7 " > C . U s e r - D e f i n e d P r o t o c o l / p > p b d s f i d = " 2 6 8 " > D . U s e r D a t a g r a m P r o t o c o l 4 8 : W h i c h o f t h e f o l l o w i n g s t a t e m e n t s a c c u r a t e l y d e s c r i b e s U D P ? / p > p b d s f i d = " 2 6 9 " > A . U D P c o p i e s f i l e s b e t w e e n a c o m p u t e r a n d a s y s t e m r u n n i n g r s h d , t h e r e m o t e s h e l l s e r v i c e ( d a e m o n ) . / p > p b d s f i d = " 2 7 0 " > B . U D P i s a m e m b e r o f t h e T C P / I P s u i t e o f p r o t o c o l s t h a t g o v e r n s t h e e x c h a n g e o f e l e c t r o n i c m a i l b e t w e e n m e s s a g e t r a n sf e r ag e n t s . / p > p b d s f i d = " 2 7 1 " > C . U D P i s a m e m b e r o f th e T C P / I P s ui t e o f p r o t o c o l s a n d i s u s e d t o c o p y f i l e s b e t w e e n t w o c o m p u t e r s o n t h e I n t e r n e t . B o t h c o m p u t e r s m u s t s u p p o r t t h e i r r e s p e c t i v e r o l e s : o n e m u s t b e a c l i e n t , a n d t h e o t h e r a s e r v e r . / p > p b d s f i d = " 2 7 2 " > D . U D P i s a T C P c o m p l e m e n t t h a t o f f e r s a c o n n e c t i o n l e s s d a t a g r a m s e r v i c e g u a r a n t e e i n g n e i t h e r d e l i v e r y n o r c o r r e c t s e q u e n c i n g o f d e l i v e r e d p a c k e t s ( m u c h l i k e I P ) . 4 9 : W h i c h o f t h e f o l l o w i n g h o s t a d d r e s s e s a r e m e m b e r s o f n e t w o r k s t h a t c a n b e r o u t e d a c r o s s t h e p u b l i c I n t e r n e t ( C h o o s e t h r e e . ) / p > p b d s f i d = " 2 7 3 " > A . 1 0 . 2 0 . 1 2 . 6 4 / p > p b d s f i d = " 2 7 4 " > B . 1 7 2 . 1 6 . 3 2 . 12 9 / p > p b d s f i d = " 2 7 5 " > C . 1 7 2 . 6 4 .3 2 . 34 / p > p b d s f i d = " 2 7 6 " > D . 1 9 2 . 1 6 8 . 2 3 . 25 2 / p > p b d s f id = " 2 7 7 " > E . 1 9 6 . 1 0 4 . 1 2 . 9 5 / p > p b d s f i d = " 2 7 8 " > F . 2 1 4 . 1 9 2 . 4 8 . 2 5 4 5 0 : Y o u a re c o n n e c t i n g y o u r S e r i a l 0 / 1 i n t e rf a c e t o t h e I n t e r n e t . W h i c h o f t h e f o l l o w i ng n e e d t o b e d o n e f o r th e c o n n e c ti o n t o w o r k ? ( C h o o s e t w o . ) / p > p b d s f i d = " 2 7 9 " > A . A s s i g n a p u b l i c I P a d d r e s s . / p > p b d s f i d = " 2 8 0 " > B . U s e t h e s h u t d o w n c o m m a n d . / p > p b d s f i d = " 2 8 1 " > C . U s e t h e n o s h u t d o w n c o m m a n d . / p > p b d s f i d = " 2 8 2 " > D . M a k e s u r e t h e i n t e r f a c e i s r u n n i n g i n f u l l - d u p l e x . / p >。

CCNA易错题1

186.54.3.0 26.35.2.255QUESTION 17Which command is used to debug a ping command?答案debug ipicmpQUESTION 18Which command displays CPU utilization?答案show processQUESTION 19When configuring a serial interface on a router, what is the default encapsulation?答案hdlcQUESTION 20What must be set correctly when configuring a serial interface so that higher-level protocols calculate thebest route?答案bandwidthQUESTION 21A company implements video conferencing over IP on their Ethernet LAN. The users notice that thenetwork slows down, and the video either stutters or fails completely. What is the most likely reason forthis?答案quality of service (QoS)QUESTION 22Which layer in the OSI reference model is responsible for determining the availability of the receivingprogram and checking to see if enough resources exist for that communication?答案applicationQUESTION 23Data transfer is slow between the source and destination. The quality of service requested by the transportlayer in the OSI reference model is not being maintained. To fix this issue, at which layer should thetroubleshooting process begin?答案networkQUESTION 25Which command reveals the last method used to powercycle a router?答案sh versionWhich three options are valid WAN connectivity methods? (Choose three.答案ppphdlc ATM答案Frame Relay解析由图中的LMI enq sent 2474988可看到发送接受LMI信息。

CCNA考试题库中英文翻译版及答案

CCNA考试题库中英文翻译版及答案1[1]1. What are two reasons that a network administrator would use access lists? (Choose two.)1.出于哪两种理由，会使用访问列表?A. to control vty access into a routerA.控制通过VTY访问器B. to control broadcast traffic through a routerB.控制广播流量穿越路由器2.一个默认的帧中继WAN被分类为哪种物理网络类型?A. point-to-pointA.点到点B. broadcast multi-accessB.广播多路访问C. nonbroadcast multi-accessC.非广播多路访问D. nonbroadcast multipointD.非广播多点E. broadcast point-to-multipointE.广播点到多点Answer: C3. A single 802.11g access point has been configured and installed in the center of a squarA few wireless users are experiencing slow performance and drops while most users are oat peak efficiency. What are three likely causes of this problem? (Choose three.)3.一个802.11接入点被部署在一个方形办公室的中央，当大多数用户在大流量传输数一些用户发现无线网络变得缓慢和出现丢包A. mismatched TKIP encryptionB. null SSIDC. cordless phonesD. mismatched SSIDE. metal file cabinetsF. antenna type or directionAnswer: CEF4. Refer to the exhibit. How many broadcast domains exist in the exhibited topology?根据下图，图中的拓扑中存在多少个广播域?A. one A.1B. two B.2C. three C.3D. four D.4E. five E.5F. six F.6Answer: C5. Refer to the exhibit. What two facts can be determined from the WLAN diagram? (Choose two.)5.根据下图，WLAN diagram决定了哪两个事实A. The area of overlap of the two cells represents a basic service set (BSS).A. 两个 cells的overlap的区域描述了一个basic service setB. The network diagram represents an extended service set (ESS).B. 网络描述了一个extended service setC. Access points in each cell must be configured to use channel 1.C. 再每个CELL中的AP必须被配置成使用channel 1D. The area of overlap must be less than 10% of the area to ensure connectivity.D. 为了确保连通性,重叠区域必须小于10%E. The two APs should be configured to operate on different channels.E. 两个访问点应该被配置成工作在不同的频道Answer: BE6. The command frame-relay map ip 10.121.16.8 102 broadcast was entered on the router.Which of the following statements is true concerning this command?6.器上输入命令frame-relay map ip 10.121.16.8 102 broadcast，以下选项正确的是?A. This command should be executed from the global configuration mode.A.该命令应该在全局配置模式下被执行B. The IP address 10.121.16.8 is the local router port used to forward data.B.IP地址10.121.16.8是本地路由器用来转发数据的接口C. 102 is the remote DLCI that will receive the information.C.102是远端的DLCI它将接受信息。

(完整版)CCNA-ITN-第-2-章考试

第2章配置网络操作系统1 下列哪两项是闪存的特征？（请选择两项。

）闪存提供非易失性存储。

当设备启动时，闪存接收来自 RAM 的 IOS 副本。

重新启动时闪存中的内容可能会丢失。

闪存是思科交换机的组件，但不是思科路由器的组件。

闪存的内容可以被覆盖。

当设备启动时，闪存会保存 IOS ，并将 IOS 副本传输到 RAM 中。

尽管闪存可以升级和覆盖，但它是非易失性存储器。

设备重新启动或断开电源时，闪存内容仍会保留。

答案说明最高分值correctness of response Option 1 and Option 5 are correct.1 point for each correct option. 0 points if more options are selected than required.22 网络管理员计划在总部的几个路由器和交换机上升级 IOS 。

继续选择和升级 IOS 之前必须回答哪三个问题？（请选择三项。

）设备是否位于同一 LAN ？设备是否有足够的 NVRAM 来存储 IOS 映像？什么型号的路由器和交换机需要升级？路由器和交换机上安装了哪些端口？路由器和交换机是否有足够的 RAM 和闪存来用于提议的 IOS 版本？设备需要哪些功能？启动配置文件存储在 NVRAM 中，而不是 IOS 中。

升级到新 IOS 版本时应考虑的重要因素包括可用 RAM 和闪存数量、设备类型和型号以及所需功能。

答案说明最高分值correctness of response Option 3, Option 5, and Option 6 are correct.1 point for each correct option. 0 points if more options are selected than required.33 当在安全环境下执行初始配置时，下列哪个程序可用来访问 Cisco 2960 交换机？使用 Telnet 通过网络远程访问交换机。

CCNA 2 Final Exam Answers V3.1

1. What are two possible reasons a router would not load a valid IOS from flash? (Choose two.)The configuration register is set to 0×2142.The first boot system command executed in the startup configuration file is boot system rom.The configuration register is set to 0×2100.The boot field is set to the hexadecimal number 2.The startup configuration file is missing or corrupt.2. What are two recommended uses of login banners? (Choose two.)to display security warning messagesto welcome any user to the routerto warn people about misusing privileged EXEC modeto identify circuits and other devices connected to the routerto announce a scheduled system shutdown3.Router A and Router B have been correctly configured to use RIP as a dynamic routing protocol and all intefaces on Router A and Router B are reporting "interface is up, line protocol is up" status. RIP is then configured onRouter C using the following commands:RouterC(config)# router ripRouterC(config-router)# network 192.168.4.0RouterC(config-router)# network 172.16.0.0If no additional routing is configured on Router A, Router B, and Router C, what will be the result?Networks 192.168.12.0/24, 192.168.4.0/24, and 172.16.0.0/16 will be unreachable from Router A.Router A will have no knowledge of network 192.168.12.0/24, but will have routes to networks 192.168.4.0/24 and 172.16.0.0/16.All networks shown in the graphic will be reachable by Router A, Router B, and Router C.Networks 192.168.4.0/24 and 172.16.0.0/16 will be unreachable from Router A and Router B.4. What are the primary functions of a router? (Choose two.) determine the best path for packetsprevent collisions on the network LANregulate flow control between sender and receiverprovide domain name resolutionforward packets to the appropriate interface5. What are some reasons to change the configuration register setting? (Choose two.)to force the system to ignore the configuration file stored in NVRAM to monitor password changesto change the POST sequenceto force the router to boot the IOS from NVRAMto force the system into ROM monitor mode6. A network administrator issues the erase startup-config command on a configured router with the configuration register set to 0×2102 and observes the following output:Erasing the nvram filesystem will remove all files! Continue? [Confirm] [OK]Erase of nvram: completeIf the router unexpectedly loses power after this sequence, what will occur when power is restored?The router will enter ROM monitor mode upon completion of the power-on self test (POST).The router will load the last known valid configuration file.The router will enter Rx-boot mode.The router will prompt the user to enter setup mode or to continue without entering setup mode.7. Why are routed protocols important to networking? (Choose two.) Routed protocols detect collisions and fragments.Routers use routed protocols to calculate the best path to a destination. Routed protocols transport data across the network.The fields and formats used within a packet are defined by routed protocols.Routed protocols are used to configure the metrics used by routing protocols.8. The main router of XYZ company has enough flash and RAM to store multiple IOS images. An administrator wants to upload a second IOS image from a TFTP server to the flash of the router. Which method will accomplish this task?Paste the IOS filename to the command line of the router while in global configuration mode. Press enter. Then issue the copy tftp flash command.Use the setup utility to load the new image to flash.Copy the IOS image file from a TFTP server using the command copy filenameip address flash .Copy the IOS image file from a TFTP server using the command copy tftp flash. When prompted, provide the IP address or name of the TFTP server and the IOS image filename.9.A network administrator has a console connection to the Fremantle router. Pings to Melville are successful, but pings to Cottesloe and Nedlands fail. What could be a first step in troubleshooting the problem?Use an extended ping from Fremantle to each router in the network.Use the show interfaces command from a Telnet session on Melville to check the connection to Cottesloe.Use the traceroute command to discover exactly which link in the network is down.Use the show cdp neighbors detail command from Fremantle to gather information about all Cisco routers in the network.10.Refer to the exhibit. The new security policy for the company allows all IP traffic from the Engineering LAN to the Internet while only web traffic from the Marketing LAN is allowed to the Internet. Which ACL can be applied in the outbound direction of Serial 0/1 on the Marketing router to implement the new security policy?access-list 197 permit ip 192.0.2.0 0.0.0.255 anyaccess-list 197 permit ip 198.18.112.0 0.0.0.255 any eq wwwaccess-list 165 permit ip 192.0.2.0 0.0.0.255 anyaccess-list 165 permit tcp 198.18.112.0 0.0.0.255 any eq wwwaccess-list 165 permit ip any anyaccess-list 137 permit ip 192.0.2.0 0.0.0.255 anyaccess-list 137 permit tcp 198.18.112.0 0.0.0.255 any eq wwwaccess-list 89 permit 192.0.2.0 0.0.0.255 anyaccess-list 89 permit tcp 198.18.112.0 0.0.0.255 any eq www11.Hosts from the Limerick LAN are not allowed access to the Shannon LAN but should be able to access the Internet. Which set of commands will create a standard ACL that will apply to traffic on the Shannon router interface Fa0/0 implementing this security?access-list 42 deny 172.19.123.0 0.0.0.255 192.0.2.0 0.0.0.255 access-list 42 permit anyaccess-list 56 deny 172.19.123.0 0.0.0.255access-list 56 permit anyaccess-list 61 deny 172.19.123.0 0.0.0.0access-list 61 permit anyaccess-list 87 deny ip any 192.0.2.0 0.0.0.255access-list 87 permit ip any12. Which of the following commands will correctly configure an extended ACL? (Choose two).Router(config)# access-list 18 permit tcp host 192.168.73.3 eq 25Router(config)# access-list 102 permit tcp 10.43.0.0 0.0.255.255 any eq 80Router(config)# access-list 187 permit tcp host 192.168.42.34 172.29.0.0 0.0.255.255 eq 23Router(config)# access-list 99 permit host 10.217.32.3Router(config)# access-list 128 permit tcp host 192.168.100.31 eq 2313. What are the results of setting the boot field bits in the configuration register to "0000"? (Choose two.)The startup-config file will be ignored at bootup.The router will load the IOS from Flash.The router will enter ROM monitor mode upon reload.The router will enter boot ROM mode and have limited capabilities. The administrator can enter the b command to manually boot the IOS.14.Refer to the exhibit. Router D interface S0 on has gone down. What is the maximum time that will elapse before Router A learns that network 168.58.14.0 is down?5 seconds13 seconds17 seconds25 seconds30 seconds77 seconds15. During initial router bootup the following line appears: "NVRAM invalid, possibly due to write erase."What are two possible reasons for this result? (Choose two.)The startup-config file was not saved to RAM before reboot.The IOS has been erased.The router has not been configured.The startup-config file cannot be located.The router will not enter initial configuration dialog.16.The Suffolk router is directly connected to the networks shown in the graphic and has a default route that points to the Richmond router. All interfaces are active and properly addressed. However, when the workstation on network 172.29.5.0/24 sends a packet to destination address 172.29.198.5, it is discarded by the Suffolk router. What can be a reason for this result?The ip classless command is not enabled on the Richmond router.The route was ignored if the Richmond router did not include the 172.29.198.0/24 network in its routing updates.The Richmond router is in a different autonomous system than the Suffolk router.The ip subnet-zero command was not configured on the Suffolk router.The ip classless command is not enabled on the Suffolk router.17. access-list 199 deny tcp 178.15.0.0 0.0.255.255 any eq 23 access-list 199 permit ip any anyAssuming this ACL is correctly applied to a router interface, which statements describe traffic on the network? (Choose two.)All FTP traffic from network 178.15.0.0 will be permitted.All Telnet traffic destined for network 178.15.0.0 will be denied.Telnet and FTP will be permitted from all hosts on network 178.15.0.0 to any destination.Telnet will not be permitted from any hosts on network 178.15.0.0 to any destination.Telnet will not be permitted to any host on network 178.15.0.0 from any destination.18.What facts can be determined from the highlighted text shown in the exhibit? (Choose two.)A weak encryption was applied to all unencrypted passwords.The enable password is now more secure than the enable secret password.An MD5 hashing algorithm was used on all encrypted passwords.Any configured user EXEC mode or Telnet passwords will be encrypted in this configuration.The service password-encryption command was used to encrypt all passwords on the router including enable secret.19. What are three features of CDP? (Choose three.)provides information on directly connected devices that have CDP enabled tests Layer 2 connectivityenabled by default on each interfaceprovides a layer of securityused for debugging Layer 4 connectivity issues20. What information can be learned during the initial router bootup? (Choose two.)the configuration register valuethe number and types of interfaces installedthe router model and the amount of memory that is availablethe amount of memory required to load the IOS and configurationthe number of interfaces with connected cables21.What can be concluded from the output shown in the exhibit? (Choose three.)This is a standard IP access list.This is an extended IP access list.The keyword host is implied in the command line access-list 99 deny 10.213.177.76.The wildcard mask must be configured for this access list to function properly.Host 10.213.177.100 will be allowed access to the Serial0/1 interface.22. Which statements are true regarding setup mode? (Choose three.)Press Ctrl-z to terminate setup mode.Enter a question mark (?) for help at any point.Press Spacebar to accept the default settings.Use setup mode to enter complex protocol features.Press Enter to accept the default settings.Press Ctrl-c to abort configuration dialog.23.Refer to the graphic. Which series of commands will create static routes that will allow Router A and Router B to deliver packets destined for LAN A and LAN B, and direct all other traffic to the Internet?RouterA(config)# ip route 10.90.3.0 255.255.255.0 192.168.3.2RouterB(config)# ip route 192.168.2.0 255.255.255.0 192.168.3.1 RouterB(config)# ip route 0.0.0.0 0.0.0.0 s0/0RouterA(config)# ip route 10.90.3.0 255.255.255.0 192.168.3.2RouterA(config)# ip route 0.0.0.0 0.0.0.0 192.168.3.2RouterB(config)# ip route 192.168.2.0 255.255.255.0 192.168.3.1RouterA(config)# ip route 0.0.0.0 0.0.0.0 192.168.3.2RouterB(config)# ip route 192.168.2.0 255.255.255.0 192.168.3.1 RouterB(config)# ip route 172.20.20.4 255.255.255.252 s0/0RouterA(config)# ip route 0.0.0.0 0.0.0.0 192.168.3.2RouterB(config)# ip route 192.168.2.0 255.255.255.0 192.168.3.1 RouterB(config)# ip route 0.0.0.0 0.0.0.0 s0/024.Which devices can be used to convert the data from a WAN router at the customer site into a form acceptable for use by the WAN service provider? (Choose three.)Ethernet switchDTEmodemhubDCE deviceCSU/DSU25.What will occur when the following ACL is applied inbound to both FastEthernet interfaces of Router A in the graphic?access-list 125 permit tcp 192.168.2.0 0.0.0.255 10.90.3.0 0.0.0.255 eq 23access-list 125 permit tcp 10.90.3.0 0.0.0.255 192.168.2.0 0.0.0.255 eq 23access-list 125 permit tcp 192.168.2.0 0.0.0.255 any eq wwwWorkstations A and B will be able to Telnet to each other. WorkstationA will be allowed to access Web servers on the Internet, while WorkstationB will be denied Internet Web access.Workstations A and B will be able to Telnet to each other. All other traffic will be denied.The ACL will have no effect because it should be applied in the outbound direction on the FastEthernet interfaces.The ACL will deny all traffic because of the implied deny ip any any statement at the end of the ACL.26. Based on this partial output of the show ip route command, which routing protocol is configured on the router?R 172.16.3.0/24 [120/3] via 172.16.2.2, 00:00:27, Serial0/0RIPEIGRPOSPFIGPBGP27.Which of the following are correct statements verified by the router output shown in the graphic? (Choose two.)Layer 3 connectivity exists between BigCity and the devices in the Device ID column.Layer 2 connectivity exists between BigCity and the devices in the Device ID column.All devices shown in the Device ID column use the TCP/IP protocol suite.All devices shown in the Device ID column can be pinged from BigCity.All devices listed in the Device ID column are directly connected to BigCity.28. A network administrator must configure a FastEthernet interface with an IP address. The configuration must also identify the remote site to which the interface is connected. Which set of commands will meet these requirements?StPetersburg(config)# banner San Jose T1StPetersburg(config)# interface fa0/0StPetersburg(config-if)# ip address 172.26.155.5 255.255.255.252StPetersburg(config)# interface fa0/0StPetersburg(config-if)# ip address 172.26.155.5 netmask255.255.255.252StPetersburg(config-if)# description San Jose T1StPetersburg(config)# interface fa0/0StPetersburg(config-if)# ip address 172.26.155.5 255.255.255.252 StPetersburg(config-if)# banner remote site San Jose T1StPetersburg(config)# interface fa0/0StPetersburg(config-if)# ip address 172.26.155.5 255.255.255.252 StPetersburg(config-if)# description San Jose T129. What are the features of a serial interface on a router? (Choose two.) enabled by defaultassigned a unique MAC addressmust be configured as a DCE in lab and production environmentsmust be configured with the default clock rate of 56000may be administratively enabled by using the no shutdown commandmust be configured with a valid IP address and subnet mask in order to forward packets30. Assuming the following ACL is correctly applied to a router interface, what can be concluded about this set of commands? (Choose two.) Router(config)# access-list 165 deny tcp 192.28.115.0 0.0.0.255 172.20.0.0 0.0.255.255 eq 23Router(config)# access-list 165 permit ip any anyThis is a standard IP access list that denies network 192.28.115.0 Telnet access to the 172.20.0.0 network.All Telnet traffic destined for 172.20.0.0 from any network will be denied access.Network 192.28.115.0 is denied Telnet access to the 172.20.0.0 network. Network 172.20.0.0 is denied Telnet access to the 192.28.115.0 network.All FTP and HTTP traffic destined for 172.20.0.0 will be permitted access.31. Which two steps describe how to create a functional physical connection between a router console and a terminal? (Choose two.)Use a crossover cable to connect the terminal serial port to the router console port.Use a rollover cable to connect the terminal NIC to the router console port.Use an RJ-45 to DB-9 adapter on the terminal serial port to connect to the cable going to the router console.Use a transceiver to connect a straight-through cable to the router console port.Use a straight-through cable to connect the router console port to the terminal NIC.Use a rollover cable to connect from a terminal serial port to the router console port.32. What critical information about the status of the router can be found in the outputs of both the show interfaces and show protocols commands? (Choose two.)the Layer 3 address of each configured interfacethe routing protocol configured to forward updates out of each interface the operational status of each interfacetraffic statistics for each interfacewhether the interface is configured as a DTE or DCE33.The following access list has been created to prevent traffic from the 192.0.2.63 host on the Sales LAN from accessing servers and hosts on the Payroll LAN.access-list 26 deny host 192.0.2.63access-list 26 permit anyRefer to the exhibit. Which group of commands will properly place the access list so that only the host on the Sales LAN is denied access to the 172.29.7.0 network but all other traffic is permitted?Payroll(config)# interface fa0/0Payroll(config-if)# ip access-group 26 outPayroll(config)# interface fa0/1Payroll(config-if)# ip access-group 26 outSales(config)# interface fa0/1Sales(config-if)# ip access-group 26 inSales(config)# interface fa0/0Sales(config-if)# ip access-group 26 out34.Refer to the exhibit. Assuming default metrics are used and the networkis fully converged, which path will RIP use to send a packet from Router A to Router F?A, D, E, FA, B, D, E, FA, C, D, E, G, FA, B, D, E, G, F35.Refer to the graphic. Communication is needed between the LAN connected to the fa0/0 interface of the Kansas router and the fa0/0 interface of the Maine router. All hosts on those LANs also need connectivity to the Internet. Which commands will allow this communication? (Choose three).Kansas(config)# ip route 192.168.6.0 255.255.255.0 172.18.64.2Kansas(config)# ip route 192.168.6.0 255.255.255.0 s0/1Kansas(config)# ip route 0.0.0.0 0.0.0.0 s0/1Maine(config)# ip route 192.168.6.0 255.255.255.0 172.18.64.1Maine(config)# ip route 0.0.0.0 0.0.0.0 s0/1Maine(config)# ip route 172.16.32.0 255.255.255.0 172.18.64.236. Why are interface descriptions used in router configurations? (Choose three).to enable support personnel to easily identify networks and customers that may be affected by a possible interface issueto provide comments on the interface without affecting the router functionalityto display access warning messages before users enter the interface configuration modeto eliminate the need to use IP addresses when using the ping and telnet commandsto identify the purpose and location of the interface37.A network administrator has enabled RIP on routersB andC in the network diagram. Which of the following commands will prevent RIP updates from being sent to Router A?A(config)# router ripA(config-router)# passive-interface S0/0B(config)# router ripB(config-router)# network 192.168.25.48B(config-router)# network 192.168.25.64A(config)# router ripA(config-router)# no network 192.168.25.32B(config)# router ripB(config-router)# passive-interface S0/0A(config)# no router rip38. What could a Cisco support technician learn from the IOS filename c2600-d-mz.121-3? (Choose three.)the format of the filethe RAM memory requirements of the filethe version number of the filethe size of the filethe device platform of the file39.While planning an IOS upgrade, the administrator issues the show version command. Based on the output in the graphic, what is the current IOS boot location?RAMNVRAMFlashROM40. A new technician must add boot system commands to one of the department routers. Which available commands will the router return as output when the command shown below is entered? (Choose two.)Router(config)# boot system ?RAMNVRAMIOSIP AddressTFTPFLASH41. From the running-config, the following configuration entries are displayed:Router(config)# line vty 0 2Router(config-line)# password g8k33prRouter(config-line)# loginWhat can be interpreted from the exhibited configuration? (Choose two.)Three Telnet lines are available for remote access.Two Telnet lines are available for remote access.Future configuration of the remaining Telnet lines will require the password to be set to g8k33pr.To login to the remote device, g8k33pr will be used as the Telnet and secret password.Remote access to this local router will require a Telnet password of g8k33pr.42. Which router component stores the information that is displayed by the show running-config command?flashNVRAMRAMROM43. What are two characteristics of the support for Telnet within Cisco IOS software? (Choose two.)Up to five separate Telnet lines are supported by default in standard edition IOS files.For security purposes, Telnet sessions are required to be established from the privileged mode.A router can host simultaneous Telnet sessions.Once established, a Telnet session can remain operational regardless of network status.Telnet tests wireless connectivity and does not require a physical connection between devices to gain remote access.44. Which router components and operations are correctly described? (Choose two.)RAM – stores the ARP cacheNVRAM – store the operating systemROM – stores the backup IOSPOST – verifies the validity of the running-configFlash – executes diagnostics at bootupDRAM – loads the bootstrap45.Given the output shown in the exhibit, in what order and location will the router search for the IOS if no boot system commands are found in the startup-config file?ROM, Flash, TFTP serverFlash, NVRAM, RAMROM, TFTP server, FlashRAM, Flash, NVRAMFlash, TFTP server, ROM46. What can a network administrator do to recover from a lost router password?perform a reload or resettelnet from another router and issue the show running-config command to view the passwordboot the router to ROM monitor mode and configure the router to ignore NVRAM when it initializesboot the router to bootROM mode and enter the b command to load the IOS manually47.Neither router in the exhibit has a host table or DNS available. The interfaces and passwords have been correctly configured. Which of the following commands will initiate a Telnet session? (Choose two.)Tottenham# telnet OxfordTottenham> telnet 198.18.139.1Oxford# connect 198.18.139.0Oxford> connect TottenhamOxford# telnet TottenhamOxford# 198.18.139.248. If a PC does not have network connectivity to a router, which router port can be used to establish communication?consoleEthernetserialVTY。

ccna考试题库

c c n a考试题库(总34页) -CAL-FENGHAI.-(YICAI)-Company One1-CAL-本页仅作为文档封面，使用请直接删除QUESTION 37What are two characteristics of RIPv2 (Choose two.)A. classful routing protocolB. variable-length subnet masksC. broadcast addressingD. manual route summarizationE. uses SPF algorithm to compute path Answer: BDExplanation/Reference:A：有类路由协议，错误B：可变长度子网掩码，正确C：采用广播地址更新，错误D：手动路由汇总，正确E:使用spf算法计算路径，错误。

QUESTION 38Which two Ethernet fiber-optic modes support distances of greater than 550 meters?A.1000BASE-CXB. 100BASE-FXC. 1000BASE-LXD. 1000BASE-SXE. 1000BASE-ZXAnswer: CEExplanation/Reference:A：最长距离25米B：最长距离100米C：最长距离3000米D：最长距离550米E：最长距离70千米QUESTION 39What two things will a router do when running a distance vector routing protocol(Choose two.)A. Send periodic updates regardless oftopology changes.B. Send entire routing table to all routers in the routing domain.C. Use the shortest-path algorithm to the determine best path.D. Update the routing table based on updates from their neighbors.E. Maintain the topology of the entire network in its database.Answer: ADExplanation/Reference:考点：考查距离矢量路由协议特性A：周期性更新，正确B：发送整个路由表到整个路由域，错误，只发送给邻居C：使用SPF算法，错误D：依靠邻居发送更新来更新路由表，正确E：在数据库中维护整个网络的拓扑。

1、下载文档前请自行甄别文档内容的完整性，平台不提供额外的编辑、内容补充、找答案等附加服务。
2、"仅部分预览"的文档,不可在线预览部分如存在完整性等问题,可反馈申请退款(可完整预览的文档不适用该条件!)。
3、如文档侵犯您的权益，请联系客服反馈,我们会尽快为您处理(人工客服工作时间：9:00-18:30)。

CCNA2.Chapter 2 (Form A)1What are two advantages of static routing over dynamic routing? (Choose two.)Static routing is more secure because it does not advertise over the network.Static routing scales well with expanding networks.Static routing requires very little knowledge of the network for correct implementation.Static routing uses fewer router resources than dynamic routing.Static routing is relatively easy to configure for large networks.Static routing requires a thorough understanding of the entire network for proper implementation. It can be prone to errors and does not scale well for large networks. Static routing uses fewer router resources, because no computing is required for updating routes. Static routing can also be more secure because it does not advertise over the network.This item references content from the following areas: Routing Protocols2.1.1 Static Routing2Refer to the exhibit.Which is the best way for PC A and PC B to successfully communicate with sites on theInternet?Configure a static route from R1 to ISP and a dynamic route from ISP to R1.Configure a default route from R1 to ISP and a static route from ISP to R1.Configure a dynamic route from R1 to ISP and a static route from ISP to R1.Configure a routing protocol between R1 and ISP and advertise all the routes.Two routes have to be created: a default route in R1 to reach ISP and a static route in ISP to reach R1 for the return traffic. This is abest solution once PC A and PC B belong to stub networks. Moreover, static routing consumes less bandwidth than dynamic routing.This item references content from the following areas:Routing Protocols∙ 2.1.1 Static Routing3 What type of route allows a router to forward packets even though its routing table containsno specific route to the destination network?dynamic routedefault routedestination routegeneric routeThis item references content from the following areas:Routing Protocols∙ 2.1.2 Types of Static Routes4 Why would a floating static route be configured with an administrative distance that is higherthan the administrative distance of a dynamic routing protocol that is running on the same router?to be used as a backup routeto load-balance the trafficto act as a gateway of last resortto be the priority route in the routing tableBy default, dynamic routing protocols have a higher administrative distance than static routes. Configuring a static route with a higher administrative distance than that of the dynamic routing protocol will result in the dynamic route being used instead of the static route. However, should the dynamically learned route fail, then the static route will be used as a backup.This item references content from the following areas:Routing Protocols∙ 2.1.2 Types of Static Routes5 Which type of static route that is configured on a router uses only the exit interface?recursive static routedirectly connected static routefully specified static routedefault static routeWhen only the exit interface is used, the route is a directly connected static route. When the next-hop IP address is used, the route is a recursive static route. When both are used, it is a fully specified static route.This item references content from the following areas:Routing Protocols∙ 2.2.1 Configure IPv4 Static Routes6Refer to the graphic. Whichcommand would be used on router A to configure a static route to direct traffic from LAN A that is destined for LAN C?A(config)# ip route 192.168.4.0 255.255.255.0 192.168.5.2A(config)# ip route 192.168.4.0 255.255.255.0 192.168.3.2A(config)# ip route 192.168.5.0 255.255.255.0 192.168.3.2A(config)# ip route 192.168.3.0 255.255.255.0 192.168.3.1A(config)# ip route 192.168.3.2 255.255.255.0 192.168.4.0The destination network on LAN C is 192.168.4.0 and the next-hop address from the perspective of router A is 192.168.3.2.This item references content from the following areas:Routing Protocols∙ 2.2.1 Configure IPv4 Static Routes7 The network administrator configures the router with the ip route 172.16.1.0 255.255.255.0172.16.2.2 command. How will this route appear in the routing table?C 172.16.1.0 is directly connected, Serial0/0S 172.16.1.0 is directly connected, Serial0/0C 172.16.1.0 [1/0] via 172.16.2.2S 172.16.1.0 [1/0] via 172.16.2.2This item references content from the following areas:Routing Protocols∙ 2.2.1 Configure IPv4 Static Routes8Refer to the exhibit. What two commands willchange the next-hop address for the 10.0.0.0/8 network from 172.16.40.2 to 192.168.1.2?(Choose two.)A(config)# no network 10.0.0.0 255.0.0.0 172.16.40.2A(config)# no ip address 10.0.0.1 255.0.0.0 172.16.40.2A(config)# no ip route 10.0.0.0 255.0.0.0 172.16.40.2A(config)# ip route 10.0.0.0 255.0.0.0 s0/0/0A(config)# ip route 10.0.0.0 255.0.0.0 192.168.1.2This item references content from the following areas: Routing Protocols2.2.1 Configure IPv4 Static Routes9 The output of the show ip routecommand contains the following entry:S 10.2.0.0 [1/0] via 172.16.2.2.What value is indicated by the 1 in the [1/0] portion of the output?metricnumber of hopsadministrative distanceinterface ID through which the network can be reachedIn the routing table entry, S 10.2.0.0 [1/0] via 172.16.2.2, the numbers inside the bracket indicate the administrative distance and metric respectively.This item references content from the following areas:Routing Protocols∙ 2.2.1 Configure IPv4 Static Routes10Refer to the exhibit. The network administrator needs to configure a default route on the Border router. Whichcommand would the administrator use to configure a default route that will require the least amount of router processing when forwarding packets?Border(config)# ip route 0.0.0.0 0.0.0.0 198.133.219.5Border(config)# ip route 0.0.0.0 0.0.0.0 198.133.219.6Border(config)# ip route 0.0.0.0 0.0.0.0 s0/0/1Border(config)# ip route 0.0.0.0 0.0.0.0 s0/0/0The default route configured with the next-hop option requires a recursive lookup.This item references content from the following areas:Routing Protocols∙ 2.2.2 Configure IPv4 Default Routes11Refer to the exhibit. What command would be used to configure a static route on R1 so that traffic from both LANs can reach the 2001:db8:1:4::/64 remote network?ipv6 route ::/0 serial0/0/0ipv6 route 2001:db8:1:4::/64 2001:db8:1:3::1ipv6 route 2001:db8:1:4::/64 2001:db8:1:3::2ipv6 route 2001:db8:1::/65 2001:db8:1:3::1To configure an IPv6 static route, use the ipv6 route command followed by the destination network. Then add either the IP address ofthe adjacent router or the interface R1 will use to transmit a packet to the 2001:db8:1:4::/64 network.This item references content from the following areas:Routing Protocols2.2.3 Configure IPv6 Static Routes12Refer to the exhibit. Whichdefault static route command would allow R1 to potentially reach all unknown networks onthe Internet?R1(config)# ipv6 route 2001:db8:32::/64 G0/0R1(config)# ipv6 route ::/0 G0/0 fe80::2R1(config)# ipv6 route ::/0 G0/1 fe80::2R1(config)# ipv6 route 2001:db8:32::/64 G0/1 fe80::2To route packets to unknown IPv6 networks a router will need an IPv6 default route. The static route ipv6 route ::/0 G0/1 fe80::2 will match all networks and send packets out the specified exit interface G0/1 toward R2.This item references content from the following areas: Routing Protocols∙ 2.2.4 Configure IPv6 Default Routes13 Which two statements describe classful IP addresses? (Choose two.)It is possible to determine which class an address belongs to by reading the first bit.The number of bits used to identify the hosts is fixed by the class of the network.Only Class A addresses can be represented by high-order bits 100.Up to 24 bits can make up the host portion of a Class C address.All subnets in a network are the same size.Three of the five classes of addresses are reserved for multicasts and experimental use.This item references content from the following areas: Routing Protocols∙ 2.3.1 Classful Addressing14 A company has several networks with the following IP address requirements: IP phones - 50 PCs - 70IP cameras - 10wireless access points - 10 network printers - 10network scanners - 2Which block of addresses would be the minimum to accommodate all of these devices if each type of device was on its own network?172.16.0.0/25172.16.0.0/24172.16.0.0/23172.16.0.0/22The network for the PCs would require a subnet mask of /25 in order to accommodate 70 devices. That network could use IP addresses 0 through 127. Phones require a subnet mask of /26 for 50 devices (addresses 128-191). Three /28 networks are needed in order to accommodate cameras, APs, and printers. The network scanner network can use a /30. A block of addresses with a mask of/24 will accommodate this site as the minimum amount needed.This item references content from the following areas:Routing Protocols∙ 2.3.3 VLSM15 What does VLSM allow a network administrator to do?utilize one subnet mask throughout a hierarchical networkutilize multiple routing protocols within an autonomous systemutilize one dynamic routing protocol throughout the entire networkutilize multiple different subnet masks in the same IP address spaceutilize one public IP address to translate multiple private addressesThis item references content from the following areas:Routing Protocols∙ 2.3.3 VLSM16 What would be the best summary route for the following networks?10.50.168.0/2310.50.170.0/2310.50.172.0/2310.50.174.0/2410.50.160.0/2210.50.164.0/2310.50.168.0/1610.50.168.0/2110.50.168.0/2210.50.168.0/23Write 168, 170, 172, and 174 (the third octet where things start changing) in binary. Look at the 1s and 0s pattern. Notice the digits on the right where the change occurs. Draw a line after the column of 1s or 0s that is the last column that remains constant (exactly the same) to the left of that line. This would be immediately after the "8s" column, meaning that the 128, 64, 32, 16, and 8 columns all have the same pattern of 1s and 0s. Because this is in the third octet and the mask is /16 for the first two octets, add 5 more to the mask for the columns that are consistently the same in the third octet (/21).This item references content from the following areas:Routing Protocols2.4.1 Configure IPv4 Summary Routes17 What is a valid summary route for IPv6 networks 2001:0DB8:ACAD:4::/64,2001:0DB8:ACAD:5::/64, 2001:0DB8:ACAD:6::/64, and 2001:0DB8:ACAD:7::/64?2001:0DB8:ACAD:0000::/632001:0DB8:ACAD:0000::/642001:0DB8:ACAD:0004::/622001:0DB8:ACAD:0004::/63The IPv6 networks with the fourth octet of hex characters converted to binary are:2001:0DB8:ACAD:0000000000000100::/642001:0DB8:ACAD:0000000000000101::/642001:0DB8:ACAD:0000000000000110::/642001:0DB8:ACAD:0000000000000111::/64The common bits are 2001:0DB8:ACAD:00000000000001. Then add zeros to determine the network summarized address, giving 2001:0DB8:ACAD:0000000000000100. Convert this to hexadecimal and count the number of left-most matching bits. The summarized address will be 2001:0DB8:ACAD:0004::/62.This item references content from the following areas:Routing Protocols∙ 2.4.2 Configure IPv6 Summary Routes18Refer to the exhibit. The network engineer for the company that is shown wants to use the primary ISP connection for all external connectivity. The backup ISP connection is used only if the primary ISP connection fails. Which set of commands would accomplish this goal?ip route 198.133.219.24 255.255.255.252ip route 64.100.210.80 255.255.255.252ip route 198.133.219.24 255.255.255.252ip route 64.100.210.80 255.255.255.252 10ip route 0.0.0.0 0.0.0.0 s0/0/0ip route 0.0.0.0 0.0.0.0 s0/1/0ip route 0.0.0.0 0.0.0.0 s0/0/0ip route 0.0.0.0 0.0.0.0 s0/1/0 10A static route that has no administrative distance added as part of the command has a default administrative distance of 1. The backuplink should have a number higher than 1. The correct answer has an administrative distance of 10. The other quad zero route wouldload balance packets across both links and both links would appear in the routing table. The remaining answers are simply static routes (either a default route or a floating static default route).This item references content from the following areas:Routing Protocols∙ 2.4.3 Configure Floating Static Routes19 Which three IOS troubleshooting commands can help to isolate problems with a static route?(Choose three.)show versionpingtracertshow ip routeshow ip interface briefshow arpThe ping, show ip route, and show ip interface brief commands provide information to help troubleshoot static routes. Showversion does not provide any routing information. The tracert command is used at the Windows command prompt and is not an IOS command. The show arp command displays learned IP address to MAC address mappings contained in the Address ResolutionProtocol (ARP) table.This item references content from the following areas:Routing Protocols2.5.2 Troubleshoot IPv4 Static and Default Route Configuration20Refer to the exhibit. The small company shown uses static routing. Users on the R2 LAN have reported a problem with connectivity. What is the issue?R2 needs a static route to the R1 LANs.R1 and R2 must use a dynamic routing protocol.R1 needs a default route to R2.R1 needs a static route to the R2 LAN.R2 needs a static route to the Internet.R1 has a default route to the Internet. R2 has a default route to R1. R1 is missing a static route for the 10.0.60.0 network. Any trafficthat reached R1 and is destined for 10.0.60.0/24 will be routed to the ISP.This item references content from the following areas:Routing Protocols∙ 2.5.2 Troubleshoot IPv4 Static and Default Route Configuration21 What happens to a static route entry in a routing table when the outgoing interface is notavailable?The route is removed from the table.The router polls neighbors for a replacement route.The route remains in the table because it was defined as static.The router redirects the static route to compensate for the loss of the next hop device.This item references content from the following areas:Routing Protocols∙ 2.5.2 Troubleshoot IPv4 Static and Default Route Configuration22 The PT initialization was skipped. You will not be able to view the PT activity.Open the PT activity. Perform the tasks in the activity instructions and then answer the question. What is the name of the web server that is displayed in the webpage?Main-WebserverWWW-ServerWebserver10MNSRVStatic routes can be configured by using the syntax router(config)# ip route prefix mask {ip-address | exit-intf}. In this case, the command to be issued would be router(config)# ip route 192.168.3.0 255.255.255.0 192.168.2.2.This item references content from the following areas:Routing Protocols∙ 2.2.1 Configure IPv4 Static Routes23 The PT initialization was skipped. You will not be able to view the PT activity.Open the PT Activity. Perform the tasks in the activity instructions and then answer the question.What IPv6 static route can be configured on router R1 to make a fully converged network?ipv6 route 2001:db8:10:12::/64 S0/0/1ipv6 route 2001:db8:10:12::/64 S0/0/0ipv6 route 2001:db8:10:12::/64 2001:db8:10:12::1ipv6 route 2001:db8:10:12::/64 2001:db8:32:77::1To reach the remote network, R1 will need a static route with a destination IPv6 address of 2001:db8:10:12::/64 and an exit interface ofS0/0/1. The correct static route configuration will be as follows:ipv6 route 2001:db8:10:12::/64 S0/0/1.This item references content from the following areas:Routing Protocols∙ 2.2.3 Configure IPv6 Static Routes。