思科第一学期期末考试考题

1Refer to the exhibit. Which Layer 2 protocol could be used inside nework A and network CIPTCPUDPEthernet2Refer to the exhibit. Which set of devices contains only intermediary devicesA, B, D, GA, B, E, FC, D, G, IG, H, I, J3Refer to the exhibit. The headers added at each layer are shown. Which layer adds the destination and source pro to ensure that data is delivered to the correct applicationphysical layerdata link layernetwork layertransport layer4The Layer 4 header contains which type of information to aid in the delivery of dataservice port numberhost logical addressdevice physical addressvirtual connection identifier5Which fiber connector supports full-duplex Ethernet6Which device should be used for routing a packet to a remote networkaccess switchDHCP serverhubrouter7Refer to the exhibit. Host A sends a frame to host C with a destination MAC address CC. The MAC address for h in the MAC table of switch SW1. How will SW1 handle the frameSwitch SW1 will drop the frame.Switch SW1 will forward the frame to host C.Switch SW1 will flood the frame out all ports.Switch SW1 will flood the frame out all ports except port Fa0/1.8Refer to the exhibit. A network technician has made several changes to R1 since the configuration has last bee modified configuration did not produce the desired changes. The technician wants to store a backup copy of the saved con a TFTP server before reloading. Which action will cause the unmodified data to be saved on the TFTP server9Which three statements are true about network layer addressing (Choose three.)It uniquely identifies each host.It assists in forwarding packets across internetworks.It uses a logical 32-bit IPv4 address.It is not a configurable address.It is a physical address.It identifies the host from the first part of the address.10What is the result of using the clock rate 56000 command at the serial interface of the routerThe interface is configured as a DCE device.The interface timers are cleared.The FastEthernet interface is made to emulate a serial interface by assigning it a timing signal.The IP address for the serial interface is configured.11Examine the graphic with current configurations. Host A in the Clerical office failed and was replaced. Althou was successful, the replacement computer cannot access the company network. With proxy ARP disabled on the Fa0 of the New York router, what is the likely cause of the problemnetwork card failurenetwork cables unpluggedIP address incorrectly enteredsubnet mask incorrectly entered12As network administrator, what is the subnet mask that allows 510 hosts given the IP address13Which OSI layer uses a connection-oriented protocol to ensure reliable delivery of dataapplication layerpresentation layersession layertransport layer14 A network has grown too large for technicians to configure network addresses and hosts files for name resolutioapplication layer services should be added to the server to allow these needs to be satisfied dynamically (ChDNSFTPDHCPHTTPSMTP15Refer to the exhibit. Host A wants to access the Internet. Which combination of a Layer 2 address and a Layer 3 enable this access from host ADestination MAC: Default gateway:MAC: Default gateway:MAC: 8517.44C Default gateway:MAC: 8517.44C Default gateway:16 A network administrator is asked to design a new addressing scheme for a corporate network. There are 60 usersoffice, 40 users in the branch office, 28 users in manufacturing, 12 in the sales office, and 4 users in the rese Which VLSM addressing scheme that uses the network will fulfill the requirements while wasting the fewest admainmanufacturingsalesresearchmainmanufacturingsalesresearchmainmanufacturingsalesresearchmainmanufacturingsalesresearch17Which physical connector type is used for a serial connection to the CSU/DSU18Refer to the exhibit. Which two facts can be determined about the topology (Choose two.)Four collision domains are present.One logical network is represented.Two broadcast domains are present.Three networks are needed.Three logical address ranges are required.19What are three characteristics of CSMA/CD (Choose three.)It monitors the media for presence of a data signal.After detecting a collision, hosts can resume transmission after a random timer has expired.A jam signal is used to ensure that all hosts are aware that a collision has occurred.Devices can be configured with a higher transmission priority.Data is transmitted only when the data signal is present.It uses a token system to avoid collisions.20Refer to the exhibit. The serial interface of the router was configured with the use of the commands that are show cannot ping the router that is directly connected to interface serial 0/0/0. What should the network technicia this problemConfigure the description at interface serial 0/0/0.Configure an IP address on interface serial 0/0/0.Remove the no shutdown command at interface serial 0/0/0Reboot the router.21Which OSI layer uses the header information to reassemble the data segments into streamsapplication layernetwork layerpresentation layersession layertransport layer22Refer to the exhibit. The NAT functionality of the router is enabled to provide Internet access to the PC. How is still unable to access the Internet. Which IP address should be changed to to enable the PC to access the23Refer to the exhibit. A technician uses the nslookup command on the PC and views the output that is displayed in What is the IP address of the primary domain name server used by the host10.10.10.3224Which memory contents will change as a result of using the Router# erase startup-config command on a routerRAMROMflashNVRAM25While configuring a router, a network technician wants to name the router. Which prompt should the technician see w the hostname commandRouter>Router#Router(config)#Router(config-line)#26Refer to the exhibit. The PC, the routing table of which is displayed, is configured correctly. To which netwo interface does the IP address belongPCswitchrouter interface fa0/0router interface fa0/127Refer to the exhibit. A network administrator is troubleshooting a link that is down between Router1 and Router2 the problem, which wire pairs need to be switched on one of the Ethernet cable endspair 1 and pair 2pair 1 and pair 3pair 2 and pair 3pair 2 and pair 428Refer to the exhibit. A PC is connected to a network. Which action will verify that the PC can communicate with gatewayUse the ping command.Use the ipconfig command.Use the ipconfig/all command.Use the ping 10.0.0.254 command.29Refer to the exhibit. Host B was powered off. What change will occur in the MAC table of the switchThe table will remain unaffected.The switch will remove the MAC address at Fa0/19.The switch will retain the MAC address until host B is powered on again.The switch will rebuild the MAC table by assigning the address to port Fa0/19.30What information is contained in the header of Layer 3 to help data deliveryport numberdevice physical addressdestination host logical addressvirtual connection identifier31 A network technician is tasked with setting up a network for six users, but the users should be able to use thto log on from any of the six computers. What type of network should be usedworkgroupP2P applicationspeer-to-peer networkclient-server network32Refer to the exhibit. A web browser is running on host PC1 with an IP address 10.10.2.2/24. A dynamic port num is assigned to the browser. The browser sends a request for a web page to the web server with an IP address Whi is trueThe session is established using TCP, and the socket number for the web server is 80.The session is established using TCP, and the socket number for the web server is 49152.The session is established using UDP, and the socket number for the web server is 80.The session is established using UDP, and the socket number for the web server is 49152.33Refer to the exhibit. An administrator on PC1 wants to view some HTML code from a web page housed on the web s client application will allow this request to be started34Refer to the exhibit. What is required on host A for a network technician to create the initial configurationan FTP clienta Telnet clienta terminal emulation programa web browser35What are two characteristics of the data link layer (Choose two.)It segments and reorders the data.It exchanges the frames between nodes.It defines the method by which network devices place data onto the media.It manages the transfer of data between the processes that run on each host.It retrieves signals from the media and restores them to their bit representations.36 A network administrator wants to restrict access to the router privileged EXEC mode. Which password should the auseenableauxconsoleVTY37Which three IPv4 addresses represent a broadcast for a subnet (Choose three.)/26/26/26/27/27/2738Refer to the exhibit. Host X is unable to communicate with host Y. Which command can be run at host X to dete intermediary device is responsible for this failuretelnetping39Refer to the exhibit. Which option shows the correct topology given the configuration of Router140If an administrator wished to return a router to the default state, what additional step must be taken after issuin erase start-up configReload the device.Issue the command copy running-config start-up config.Perform a show running-config to verify that the file was removed.Enter the interface commands to allow the device to connect to the network.41By using the ipconfig command, a network administrator determines that a workstation has the address with 29 the subnet mask. To what network does the workstation belong42Which statement is true about router hostnamesA hostname should be unique on each router.A router hostname cannot contain capital letters.A router hostname is configured in privileged executive mode.A router hostname must be created before any other configurations can be added to the device.43 A user types the enable command. What task can be performed at the privileged EXEC modeConfigure the device.Configure individual interfaces.Configure individual terminal lines.Issue show and debug commands.44Refer to the exhibit. Which logical topology describes the exhibited networkstarringpoint-to-pointmulti-access45Refer to the exhibit. A user wants to access the Internet from the PC. A part of the running configuration of t shown. Which default gateway IP address should be configured at the PC to enable this access46Which statement is true about the ICMP protocolIt is an application layer protocol.It is designed to make IP a reliable protocol.It is often filtered out of networks for security purposes.If a host does not respond to an ICMP echo request, the host is not functioning.47Refer to the exhibit. At which OSI layer is serial interface 0/0/1 experiencing problemsLayer 1Layer 2Layer 3Layer 448Refer to the exhibit. The host was disconnected from switch 2 and connected to switch 1. Which combination of subnet mask, and default gateway should be assigned to this host to allow it to function in the networkIP address: 10.10.9.37 Subnet mask: Default gateway:address: 10.10.9.37 Subnet mask: Default gateway:address: 10.10.9.29 Subnet mask: Default gateway:address: 10.10.9.32 Subnet mask: Default gateway:address: 10.10.9.37 Subnet mask: Default gateway:address: 10.10.9.63 Subnet mask: Default gateway:49Refer to the exhibit. The diagram represents the process of sending email between clients. Select the list below t identifies the component or protocol used at each numbered stage of the diagram.50What is the Cisco IOSsystem software for Cisco devicesRead Only Memory in Cisco devicesnon-volatile storage for device configurationsan initial operating system that is used for boot functions。