思科第一学期期末练习题

合集下载

思科第一学期期末考试答案

思科第一学期期末考试最新答案work Information Technology Company.2020YEAR要将数据包发送到远程网络，应使用哪种设备？访问交换机DHCP 服务器集线器路由器OSI 哪一层使用面向连接的协议来确保数据的可靠传输？应用层表示层会话层传输层请参见图示。

根据显示的 IP 配置回答，主机 A 和主机 B 无法在本地网络外通信的原因是什么？对主机 A 分配了网络地址。

对主机 B 分配了组播地址。

主机 A 和主机 B 属于不同的网络。

对网关地址分配了广播地址。

请参见图示。

包含路由器 B 的网络遇到问题。

助理网络工程师已确定此网络的问题出在路由器什么操作可以纠正该网络问题？在接口 Serial 0/0/0 上发出clock rate命令在接口 Serial 0/0/1 上发出description命令在接口 FastEthernet 0/0 上发出ip address命令在接口 FastEthernet 0/1 上发出no shutdown命令请参见图示。

对于从主机 A 向 Web 服务器发出的网页请求，正确的目的套接字数字是什么00-08-a3-b6-ce-46198.133.219.25:80C 172.18.0.0/24 is directly connected, FastEthernet0/0在 Cisco IOS 设备中，启动配置文件存储于何处？闪存NVRAMRAMROM在配置路由器时，网络技术人员想要命名路由器。

输入hostname命令后，技术人员会看到下列示？Router>Router#Router(config)#Router(config-line)#下列哪三个 IPv4 地址代表子网的广播（选择三项）（主机为1）172.16.4.63 /26172.16.4.129 /26172.16.4.191 /26172.16.4.51 /27172.16.4.95 /27172.16.4.221 /27网络管理员想要限制访问路由器的特权执行模式。

(完整版)Cisco期末考试选择题题库

第1小组成员出题集：1.一台主机已经正确布线并配置有唯一的主机名和有效的IP地址。

要使主机可以远程访问资源还应配置哪两个额外的组件？ACA．子网掩码B．MAC 地址C．默认网关D．环回IP 地址E．DHCP 服务器IP 地址2.支持可变长子网掩码的路由协议有?BCDA. RIP v1B. RIP v2C. OSPFD. IS-IS3.路由器中含有许多其他计算机中常见的硬件和软件组合，包括?CA.CPU ROM 操作系统硬盘B.主板硬盘显卡CPUC.CPU ROM 内存操作系统D.主板电源光驱CPU4.哪两项说法正确描述了路由器的组件？BCA. RAM 永久存储着在启动过程中使用的配置文件B.重新启动时闪存中的内容不会丢失C. NVRAM 存储着在启动过程中使用的IOS 的备份副本D. ROM 包含最新而且最完整的IOS 版本5.下列哪些是路由器的功能？AA. 分组交换广播域分段根据逻辑编址选择最佳路径B. 分组交换网段扩展广播域分段C. 根据物理编址选择最佳路径根据逻辑编址选择最佳路径网段扩展D. 分组交换网段扩展广播域分段6.以下哪一项正确描述了路由器启动时的顺序？AA.加载bootstrap、加载IOS、应用配置B.加载bootstrap、应用配置、加载IOSC.加载IOS、加载bootstrap、应用配置、检查硬件D.检查硬件、应用配置、加载bootstrap、加载IOS7.网络管理员需要通过路由器的FastEthernet 端口直接连接两台路由器。

应用哪种电缆?CA.直通电缆B.全反电缆C.交叉电缆D.串行电缆8.以下哪些路由表项要由网络管理员手动配置?AA.静态路由B.直接路由C.动态路由D.以上说法都不正确9.RIP协议是基于?AA.UDPB.TCPC.ICMPD.Raw IP10.以下协议属于路由协议的是 ?ABCGA.RIPB.IS-ISC.OSPFD.PPPE.IPF.IPXG.BGP11．静态路由的优点包括? CA. 管理简单B. 自动更新路由C. 提高网络安全性D. 节省带宽E. 收敛速度快12．以下哪些内容是路由信息中所不包含的?AA. 源地址B. 下一跳C. 目标网络D. 路由权值13.下列关于OSPF协议的说法正确的是?ABDA. 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14.以下哪一项正确描述了路由器启动时的顺序？A（A）加载bootstrap、加载IOS、应用配置（B）加载bootstrap、应用配置、加载IOS（C）加载IOS、加载bootstrap、应用配置、检查硬件（D）检查硬件、应用配置、加载bootstrap、加载IOS15．输入以下命令的作用是什么？BR1(config)#line vty 0 4R1(config-line)#password check123R1(config-line)#loginA.确保在进入用户执行模式之前输入口令B.设置通过Telnet连接该路由器时使用的口令C.要求在保存配置前输入check123D.创建本地用户账户以便登陆路由器或交换机16．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Melboume站点建立连接？（选三项）ABDA.Sydeny(config-if)#ip address 201.100.53.2 255.255.255.0B.Sydeny(config-if)#no shutdownC.Sydeny(config-if)#ip address 201.100.53.1 255.255.255.224D.Sydeny(config-if)#clock rate 56000E.Sydeny(config-if)#ip gost Melboume 201.100.53.2答案：1-5：AC,BCD,C,B,A6-10：A,C,A,A,ABCG7-15：ACD,A,ABD,A,B16：ABD注释：第1,6,11道陈宝生出题；第2,7,12道许斌斌出题；第3,8,13道曹淑婷出题；第4,9,14道彭鹏出题；第5,10,15,16道陆志翔出题。

思科第1学期期末考试答案

2 points for Option 1
0 points for any other option
2
17
窗体顶端
哪种连接能为思科交换机提供加密的安全CLI会话？
控制台连接
AUX连接
Telnet连接
SSH连接
窗体底端
使用安全外壳(SSH)的CLI会话具有更强的安全性，因为SSH在传输会话数据的过程中支持强密码和加密。其他方法支持身份验证，但不支持加密。
音频会议、网页、金融交易
金融交易、音频会议、网页
窗体底端
服务质量机制促进了队列管理策略的建立，可以针对不同的应用程序数据分类执行不同的主次优先级。排队机制可以使语音数据的优先级高于交易数据，使交易数据的优先级高于Web数据。
答案
说明
最高分值
correctness of response
2 points for Option 1
0 points for any other option
2
15
窗体顶端
在正常操作中，大多数思科交换机从哪个位置运行IOS？
RAM
闪存
NVRAM
磁盘驱动器
窗体底端
当思科交换机启动时，IOS被复制到RAM中。然后交换机从RAM中运行IOS，从而增强操作性能。
答案
说明
最高分值
correctness of response
新的配置会存储在闪存中。
重新启动交换机时会加载新的配置。
当前IOS文件会替换为新配置的文件。
配置更改将被删除，原始配置将会恢复。
窗体底端
使用copy running-config startup-config命令，当前运行配置的内容会替换存储在NVRAM中的启动配置文件。设备重新启动时，将会加载NVRAM中保存的配置文件。

思科第一学期期末试题目及答案

1请参见图示。

主机 A 用户向主机 B 用户发送了一封电子邮件。

主机 A 发送了哪种类型的信息？广播组播同播单播2为了将PC 加入到网络环境中，应通过软件配置哪两个组件？（选择两项。

）MAC 地址IP 地址内核外壳(shell)子网掩码3哪两项是MAC 地址的特征？（选择两项。

）指示网络中主机的物理位置。

由DHCP 服务器动态分配。

以十六进制格式显示。

是物理地址。

是一种基于电缆的地址。

4哪种连接需要使用直通电缆？PC 端口至PC 端口PC 端口至路由器接口交换机端口至路由器端口交换机端口至交换机端口5路由器在收到包含广播MAC 地址的帧时会执行什么操作？它不会将该帧转发给另一个网络。

它会以其IP 地址作为回复将该帧转发回发送主机。

它会将帧从除该帧所在接口的其它所有接口转发出去。

它会将该帧转发回接收接口，以确保局域网中的所有主机都能收到。

6DNS 服务器的功能是什么？将IP 地址映射为MAC 地址。

将计算机或域名转换为相应的IP 地址。

管理客户端所在的域。

接收从客户端发来的HTTP 请求。

7哪两种网络故障与物理层相关？（选择两项。

）电缆和接头损坏编址不正确子网掩码不正确组件过热默认网关不正确8哪一层是主机进入网络的第一个进入点？核心层接入层网络层分布层9下列哪些是私有IP 地址的地址范围？（选择三项。

）10.0.0.0 到10.255.255.255200.100.50.0 到200.100.25.255150.150.0.0 到150.150.255.255172.16.0.0 到172.31.255.255192.168.0.0 到192.168.255.255127.16.0.0 到127.31.255.25510请参见图示。

一家组织的安全策略允许员工在家里连接办公室内部网。

这是一种什么安全策略？合理使用事件处理网络维护远程访问11请参见图示。

将Linksys 集成路由器上的安全模式设置为WEP 有什么作用？WEP 安全模式能够使接入点向客户端告知它的存在。

思科第一学期期末考试最新答案CCNA1

要将数据包发送到远程网络，应使用哪种设备？访问交换机DHCP 服务器集线器路由器OSI 哪一层使用面向连接的协议来确保数据的可靠传输？应用层表示层会话层传输层请参见图示。

根据显示的IP 配置回答，主机 A 和主机 B 无法在本地网络外通信的原因是什么？对主机 A 分配了网络地址。

对主机 B 分配了组播地址。

主机 A 和主机 B 属于不同的网络。

对网关地址分配了广播地址。

请参见图示。

包含路由器 B 的网络遇到问题。

助理网络工程师已确定此网络的问题出在路由行什么操作可以纠正该网络问题？在接口Serial 0/0/0 上发出clock rate命令在接口Serial 0/0/1 上发出description命令在接口FastEthernet 0/0 上发出ip address命令在接口FastEthernet 0/1 上发出no shutdown命令请参见图示。

对于从主机 A 向Web 服务器发出的网页请求，正确的目的套接字数字是什么00-08-a3-b6-ce-46198.133.219.25:80C 172.18.0.0/24 is directly connected, FastEthernet0/0在Cisco IOS 设备中，启动配置文件存储于何处？闪存NVRAMRAMROM在配置路由器时，网络技术人员想要命名路由器。

输入hostname命令后，技术人员会看到下列示？Router>Router#Router(config)#Router(config-line)#下列哪三个IPv4 地址代表子网的广播？（选择三项）172.16.4.63 /26172.16.4.129 /26172.16.4.191 /26172.16.4.51 /27172.16.4.95 /27172.16.4.221 /27网络管理员想要限制访问路由器的特权执行模式。

管理员应该使用哪一种口令？使能aux控制台VTY请参见图示。

思科ite期末试题及答案

思科ite期末试题及答案1. 选择题：1) 以下哪项是计算机网络的优点？A. 提供娱乐和游戏选项B. 支持快速通信和数据共享C. 执行操作系统和软件D. 扩展计算机硬件能力答案：B2) 在计算机网络中，什么是IP地址？A. 网络设备的唯一标识符B. 用于在浏览器中访问网站的URLC. 一种用户认证方式D. 用于加密和解密数据的密码答案：A3) 哪项是正确的关于局域网(LAN)和广域网(WAN)的描述？A. LAN覆盖的范围比WAN更小B. 只有WAN可以连接多个计算机C. 只有LAN支持无线连接D. WAN速度比LAN更快答案：A4) 在组成计算机网络的各种设备中，以下哪个设备可以连接到LAN并提供无线网络连接？A. 路由器B. 集线器C. 交换机D. 适配器答案：A5) 以下哪项是帮助保护计算机和网络安全的措施？A. 使用相同的密码B. 共享敏感信息C. 定期更新防病毒软件D. 下载可疑文件答案：C2. 填空题：1) 在 OSI 模型中，物理层的作用是__________。

答案：传输比特流2) 在计算机网络中，HTTP代表着__________。

答案：超文本传输协议3) 在TCP/IP模型中，IP地址是由__________位二进制数字组成的。

答案：32位4) 在计算机网络中，LAN表示__________。

答案：局域网5) 在网络配置中，DNS代表__________。

答案：域名系统3. 简答题：1) 请简单描述计算机网络的定义以及它的优点。

答案：计算机网络是指通过物理或无线电连接将多台计算机连接在一起的技术。

它可以提供快速通信和数据共享，使得信息在计算机之间可以更加方便地传输和访问。

它还可以提供广泛的资源共享，如打印机、硬盘等。

2) 请简单解释什么是TCP/IP协议？答案：TCP/IP是一组互联网通信协议的集合，它是计算机网络中最常用的协议之一。

它包括了TCP（传输控制协议）和IP（互联网协议）两个部分。

思科第一学期期末考试最新答案

根据显示的IP 配置回答，主机 A 和主机 B 无法在本地网络外通信的原因是什么？对主机 A 分配了网络地址。

对主机 B 分配了组播地址。

主机 A 和主机 B 属于不同的网络。

对网关地址分配了广播地址。

请参见图示。

包含路由器 B 的网络遇到问题。

对于从主机 A 向Web 服务器发出的网页请求，正确的目的套接字数字是什么00-08-a3-b6-ce-46198.133.219.25:80C 172.18.0.0/24 is directly connected, FastEthernet0/0在Cisco IOS 设备中，启动配置文件存储于何处？闪存NVRAMRAMROM在配置路由器时，网络技术人员想要命名路由器。

输入hostname命令后，技术人员会看到下列示？Router>Router#Router(config)#Router(config-line)#下列哪三个IPv4 地址代表子网的广播？（选择三项）（主机为1）172.16.4.63 /26172.16.4.129 /26172.16.4.191 /26172.16.4.51 /27172.16.4.95 /27172.16.4.221 /27网络管理员想要限制访问路由器的特权执行模式。

管理员应该使用哪一种口令？使能aux控制台VTY请参见图示。

思科第一学期期末考试最新答案

根据显示的IP 配置回答，主机 A 和主机 B 无法在本地网络外通信的原因是什么？对主机 A 分配了网络地址。

对主机 B 分配了组播地址。

主机 A 和主机 B 属于不同的网络。

对网关地址分配了广播地址。

请参见图示。

包含路由器 B 的网络遇到问题。

对于从主机 A 向Web 服务器发出的网页请求，正确的目的套接字数字是什么00-08-a3-b6-ce-46198.133.219.25:80C 172.18.0.0/24 is directly connected, FastEthernet0/0在Cisco IOS 设备中，启动配置文件存储于何处？闪存NVRAMRAMROM在配置路由器时，网络技术人员想要命名路由器。

管理员应该使用哪一种口令？使能aux控制台VTY请参见图示。

思科第一学期期末考试最新考题CCNA1备课讲稿

思科第一学期期末考试最新考题C C N A11Refer to the exhibit. Which Layer 2 protocol could be used inside nework A and network C?IPTCPUDPEthernet2Refer to the exhibit. Which set of devices contains only intermediary devices?A, 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 process num ensure that data is delivered to the correct application?physical layerdata link layernetwork layertransport layer4The Layer 4 header contains which type of information to aid in the delivery of data?service port numberhost logical addressdevice physical addressvirtual connection identifier5Which fiber connector supports full-duplex Ethernet?6Which device should be used for routing a packet to a remote network?access switchDHCP serverhubrouter7Refer to the exhibit. Host A sends a frame to host C with a destination MAC address CC. The MAC address for host C is no table of switch SW1. How will SW1 handle the frame?Switch 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 been saved. Th configuration did not produce the desired changes. The technician wants to store a backup copy of the saved configuration server before reloading. Which action will cause the unmodified data to be saved on the TFTP server?9Which 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 router?The 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. Although a ping to 12 successful, the replacement computer cannot access the company network. With proxy ARP disabled on the Fa0/0 interfacnetwork card failurenetwork cables unpluggedIP address incorrectly enteredsubnet mask incorrectly entered12As network administrator, what is the subnet mask that allows 510 hosts given the IP address 172.30.0.0?255.255.0.0255.255.248.0255.255.252.0255.255.254.0255.255.255.0255.255.255.12813Which OSI layer uses a connection-oriented protocol to ensure reliable delivery of data?application layerpresentation layersession layertransport layer14 A network has grown too large for technicians to configure network addresses and hosts files for name resolution. Which twlayer services should be added to the server to allow these needs to be satisfied dynamically? (Choose two.)DNSFTPDHCPHTTPSMTP15Refer to the exhibit. Host A wants to access the Internet. Which combination of a Layer 2 address and a Layer 3 address w access from host A?Destination MAC: 0030.8596.DE83 Default gateway: 209.165.202.130Destination MAC: 0030.8596.DE82 Default gateway: 172.16.9.2Destination MAC: 0030.8517.44C4 Default gateway: 172.16.1.1Destination MAC: 0030.8517.44C4 Default gateway: 209.165.202.13016 A network administrator is asked to design a new addressing scheme for a corporate network. There are 60 users in the musers in the branch office, 28 users in manufacturing, 12 in the sales office, and 4 users in the research office. Which VLSM scheme that uses the 192.168.88.0/24 network will fulfill the requirements while wasting the fewest addresses?192.168.88.0/26 main192.168.88.32/26 branch192.168.88.64/26 manufacturing192.168.88.96/27 sales192.168.88.128/28 research192.168.88.0/26 main192.168.88.64/26 branch192.168.88.128/27 manufacturing192.168.88.160/28 sales192.168.88.176/29 research192.168.88.0/27 main192.168.88.32/27 branch192.168.88.64/28 manufacturing192.168.88.80/29 sales192.168.88.88/30 research192.168.88.0/27 main192.168.88.64/28 branch192.168.88.80/28 manufacturing192.168.88.96/29 sales192.168.88.104/30 research17Which physical connector type is used for a serial V.35 connection to the CSU/DSU?18Refer 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 shown. The rou ping the router that is directly connected to interface serial 0/0/0. What should the network technician do to solve this probleConfigure 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 streams?application layernetwork layerpresentation layersession layertransport layer22Refer to the exhibit. The NAT functionality of the router is enabled to provide Internet access to the PC. However, the PC is to access the Internet. Which IP address should be changed to 209.165.201.1 to enable the PC to access the Internet?192.168.1.191192.168.1.101192.168.1.1192.168.1.25423the IP address of the primary domain name server used by the host?10.10.10.32192.168.1.5192.168.1.99192.168.2.10024Which memory contents will change as a result of using the Router# erase startup-config command on a router?RAMROMflashNVRAM25While configuring a router, a network technician wants to name the router. Which prompt should the technician see when e hostname command?Router>Router#Router(config)#Router(config-line)#26Refer to the exhibit. The PC, the routing table of which is displayed, is configured correctly. To which network device or inte the IP address 192.168.1.254 belong?PCswitchrouter interface fa0/0router interface fa0/127Refer to the exhibit. A network administrator is troubleshooting a link that is down between Router1 and Router2. To correc which wire pairs need to be switched on one of the Ethernet cable ends?pair 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 its default gUse the ping 127.0.0.1 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 switch?The 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 FFFF.FFFF.FFFF address to port Fa0/19.30What information is contained in the header of Layer 3 to help data delivery?port 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 their accounts toany of the six computers. What type of network should be used?workgroupP2P 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 number of 491 assigned to the browser. The browser sends a request for a web page to the web server with an IP address 192.168.1.254 statement is true?The session is established using TCP, and the socket number for the web server is 192.168.1.254: 80.The session is established using TCP, and the socket number for the web server is 192.168.1.254: 49152.The session is established using UDP, and the socket number for the web server is 192.168.1.254: 80.The session is established using UDP, and the socket number for the web server is 192.168.1.254: 49152.33Refer to the exhibit. An administrator on PC1 wants to view some HTML code from a web page housed on the web server.application will allow this request to be started?34Refer to the exhibit. What is required on host A for a network technician to create the initial configuration on Router1?an 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 administrenableauxconsoleVTY37Which three IPv4 addresses represent a broadcast for a subnet? (Choose three.)172.16.4.63 /26172.16.4.129 /26172.16.4.191 /26172.16.4.51 /27172.16.4.95 /27172.16.4.221 /2738Refer to the exhibit. Host X is unable to communicate with host Y. Which command can be run at host X to determine which intermediary device is responsible for this failure?telnet 192.168.1.1ping 192.168.1.1ftp 192.168.1.1tracert 192.168.1.139Refer to the exhibit. Which option shows the correct topology given the configuration of Router1?40If an administrator wished to return a router to the default state, what additional step must be taken after issuing the comma start-up config?Reload 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 192.168.3.38 with the subnet mask. To what network does the workstation belong?192.168.3.8192.168.3.16192.168.3.24192.168.3.3242Which statement is true about router hostnames?A 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 mode?Configure the device.Configure individual interfaces.Configure individual terminal lines.Issue show and debug commands.44Refer to the exhibit. Which logical topology describes the exhibited network?starringpoint-to-pointmulti-access45Refer to the exhibit. A user wants to access the Internet from the PC. A part of the running configuration of the router is sho default gateway IP address should be configured at the PC to enable this access?10.1.192.110.1.192.210.1.192.54192.31.7.146Which statement is true about the ICMP protocol?It 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 problems?Layer 1Layer 2Layer 3Layer 448Refer to the exhibit. The host was disconnected from switch 2 and connected to switch 1. Which combination of IP address mask, and default gateway should be assigned to this host to allow it to function in the network?IP address: 10.10.9.37 Subnet mask: 255.255.255.240 Default gateway: 10.10.9.35IP address: 10.10.9.37 Subnet mask: 255.255.255.224 Default gateway: 10.10.9.35IP address: 10.10.9.29 Subnet mask: 255.255.255.248 Default gateway: 10.10.9.35IP address: 10.10.9.32 Subnet mask: 255.255.255.224 Default gateway: 10.10.9.35IP address: 10.10.9.37 Subnet mask: 255.255.255.224 Default gateway: 196.1.105.6IP address: 10.10.9.63 Subnet mask: 255.255.255.224 Default gateway: 10.10.9.3549Refer to the exhibit. The diagram represents the process of sending email between clients. Select the list below that correc the component or protocol used at each numbered stage of the diagram.1.MUA2.MDA3.MTA4.SMTP5.MTA6.POP7.MDA8.MUA1.MUA2.POP3.MDA4.SMTP5.MTA6.MDA7.SMTP8.MUA1.MUA2.POP3.SMTP4.MDA5.MTA6.SMTP7.POP8.MUA1.MDA2.SMTP3.MTA4.SMTP5.MTA6.MUA7.POP8.MDA1.MUA2.SMTP3.MTA4.SMTP5.MTA6.MDA7.POP8.MUA50What is the Cisco IOS?system software for Cisco devicesRead Only Memory in Cisco devicesnon-volatile storage for device configurationsan initial operating system that is used for boot functions。

思科-期末考试答案

关闭窗口考试系统考试浏览器 - ENetwork Final Exam - CCNA Exploration: Network Fundamentals (版本 4.0)下面是考试的考试试题以及与题目关联的评分规则。

思科网络技术学院的内容是受到版权保护的,禁止一切未经授权的张贴,分发或共享本考试的内容. 1下列哪一个 OSI 层负责管理数据段？应用层表示层会话层传输层标题描述最高分值 1 correctness of response2 points for Option 40 points for any other option22请参见图示。

图中所示为客户端之间发送电子邮件的过程。

以下哪一列表正确地标识了图中各编号阶段使用的组件或协议？1.MUA2.MDA3.MTA4.SMTP5.MTA6.POP7.MDA8.MUA1.MUA2.POP3.MDA4.SMTP5.MTA6.MDA7.SMTP8.MUA1.MUA2.POP3.SMTP4.MDA5.MTA6.SMTP7.POP8.MUA1.MUA2.SMTP3.MTA4.SMTP5.MTA6.MDA7.POP8.MUA3第 4 层报头包含帮助数据传输的哪一类信息？服务端口号主机逻辑地址设备物理地址虚拟连接标识符4哪个 OSI 层提供面向连接的可靠数据通信服务？应用层表示层会话层传输层网络层5当 OSI 模型下层执行无连接协议时，通常使用什么来确认数据已收到并请求重传丢失的数据？IPUDP以太网无连接确认面向连接的上层协议或服务6下列哪三项是 CSMA/CD 的特征？（选择三项。

）设备会侦听介质，并且仅当无法检测到介质上存在其它信号时才会传输数据。

介质上的所有设备均可侦听所有通信。

设备根据配置的优先级来进行通信。

发生冲突后，引起冲突的设备会优先尝试传输数据。

发生冲突时，所有设备会在一段时间内停止传输数据，该段时间的长度随机决定。

CSMA/CD 使用令牌系统来避免冲突。

思科第一学期期末考试最新答案

初始配置？
FTP客户端
Tel net客户端
终端仿真程序
Web浏览器
请参见图示。哪种逻辑拓扑是对图示网络的准确描述?
广星型
环型
点对点
多路访问
3层头部包含的哪一项信息可帮助数据传输?
端口号
设备物理地址
目的主机逻辑地址
虚拟连接标符
管理员对设备做出了更改，但更改没有达到预期效果。管理员可以采取什么措施来恢复
要将数据包发送到远程网络，应使用哪种设备?
访问交换机
DHCP服务器
集线器
路由器
OSI哪一层使用面向连接的协议来确保数据的可靠传输?
应用层
表示层
会话层
传输层
请参见图示。根据显示的IP配置回答，主机A和主机B无法在本地网络外通信的原因是什么？
对主机A分配了网络地址。
对主机B分配了组播地址。
主机A和主机B属于不同的网络。
erase start- up config命令。
对网关地址分配了广播地址。
请参见图示。对于从主机A向Web服务器发出的网页请求，正确的目的套接字数字是什么
00-08-a3-b6-ce-46
198.133.219.25:80
htt p://
C 172.18.0.0/24 is directly conn ected, FastEthernet。/。
在Cisco IOS设备中，启动配置文件存储于何处?
闪存
NVRAM
RAM
ROM
在配置路由器时，网络技术人员想要命名路由器。输入示？
Router〉
Router#
Router(co nfig)#
Router(co nfig-li ne)#

思科第一学期期末考试最新答案CCNA1

思科第一学期期末考试最新答案CCNA1要将数据包发送到远程网络，应使用哪种设备？访问交换机DHCP 服务器集线器路由器OSI 哪一层使用面向连接的协议来确保数据的可靠传输？应用层表示层会话层传输层请参见图示。

根据显示的IP 配置回答，主机 A 和主机 B 无法在本地网络外通信的原因是什么？对主机 A 分配了网络地址。

对主机 B 分配了组播地址。

主机 A 和主机 B 属于不同的网络。

对网关地址分配了广播地址。

请参见图示。

包含路由器 B 的网络遇到问题。

助理网络工程师已确定此网络的问题出在路由行什么操作可以纠正该网络问题？在接口Serial 0/0/0 上发出clock rate 命令在接口Serial 0/0/1 上发出description 命令在接口FastEthernet 0/0 上发出ip address 命令在接口FastEthernet 0/1 上发出no shutdown 命令VTY请参见图示。

主机 A 上需要安装什么才能支持网络技术人员创建Router1 的初始配置？FTP 客户端Telnet 客户端终端仿真程序Web 浏览器请参见图示。

哪种逻辑拓扑是对图示网络的准确描述？星型环型点对点多路访问请参见图示。

哪种逻辑拓扑是对图示网络的准确描述？星型环型点对点多路访问第 3 层头部包含的哪一项信息可帮助数据传输？端口号设备物理地址目的主机逻辑地址虚拟连接标识符管理员对设备做出了更改，但更改没有达到预期效果。

管理员可以采取什么措施来恢复NVRAM 中保存的配置？发出erase flash 命令。

发出reload 命令并对随后的提示回答no。

发出erase start-up config 命令。

发出copy running-config start-up config 命令。

哪些类型的介质不受EMI 和RFI 影响？（选择两项）10 Base-T10 Base-210 Base-5100 Base-FX100 Base TX1000 Base LX请参见图示。

思科CCNA第一学期期末考试答案

1 -
交叉电缆
连接
2 -
直通电缆
ቤተ መጻሕፍቲ ባይዱ连接
3 -
交叉电缆
-
忌
请参见图示。I
主机的默认网关。
主机的IP地址
主机的首选域名服务器。
主机的主页IP地址
请参见图示。对图示拓扑可以得出哪两项结论？（选择两项）
连接全反电缆连接直通电缆连接交叉电缆连接交叉电缆连接全反电缆连接交叉电缆连接直通电缆连接交叉电缆连接交叉电缆连接直通电缆连接交叉电缆连接直通电缆连接交叉电缆连接直通电缆连接交叉电缆请参见图示
下列哪个端口号范围为服务器上运行的应用程序常用的服务而保留？
0到255
0到1023
1024到49151
49152到65535
以下哪组
.0
以下哪个OSI协议层提供面向连接的可靠数据通信服务? 应用层
演示文稿
会话
传输层
n etwork
何时必须使用clock rate命令配置路由器串行接口？
当该接口充当DTE设备时
当该接口计时器已经清除时
当连接的DTE设备关闭时
当该接口充当DCE设备时
下列哪些是私有IP地址的地址范围？（选择三项。）
10.0.0
请参见图示。每条介质链路都已标记。应该使用哪种类型的电缆连接不同设备?
连接
1 -
全反电缆
连接
2 -
直通电缆
连接
3 -
交叉电缆
连接
1 -
交叉电缆
连接
2 -
全反电缆
连接
3 -
交叉电缆
连接
1 -
直通电缆
连接
2 -
交叉电缆
连接
3 -

思科第一学期期末考试考题CCNA

1Refer to the exhibit. Which Layer 2 protocol could be used inside nework A and network C?IPTCPUDPEthernet2Refer to the exhibit. Which set of devices contains only intermediary devices?A, 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 process num ensure that data is delivered to the correct application?physical layerdata link layernetwork layertransport layer4The Layer 4 header contains which type of information to aid in the delivery of data?service port numberhost logical addressdevice physical addressvirtual connection identifier5Which fiber connector supports full-duplex Ethernet?6Which device should be used for routing a packet to a remote network?access switchDHCP serverhubrouter7Refer to the exhibit. Host A sends a frame to host C with a destination MAC address CC. The MAC address for host C is no table of switch SW1. How will SW1 handle the frame?Switch 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 been saved. Th configuration did not produce the desired changes. The technician wants to store a backup copy of the saved configurationserver before reloading. Which action will cause the unmodified data to be saved on the TFTP server?9Which 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 router?The 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. Although a ping to 12 successful, the replacement computer cannot access the company network. With proxy ARP disabled on the Fa0/0 interfac York router, what is the likely cause of the problem?network card failurenetwork cables unpluggedIP address incorrectly enteredsubnet mask incorrectly entered12As network administrator, what is the subnet mask that allows 510 hosts given the IP address 172.30.0.0?255.255.0.0255.255.248.0255.255.252.0255.255.254.0255.255.255.0255.255.255.12813Which OSI layer uses a connection-oriented protocol to ensure reliable delivery of data?application layerpresentation layersession layertransport layer14 A network has grown too large for technicians to configure network addresses and hosts files for name resolution. Which twlayer services should be added to the server to allow these needs to be satisfied dynamically? (Choose two.)DNSFTPDHCPHTTPSMTP15Refer to the exhibit. Host A wants to access the Internet. Which combination of a Layer 2 address and a Layer 3 address w access from host A?Destination MAC: 0030.8596.DE83 Default gateway: 209.165.202.130Destination MAC: 0030.8596.DE82 Default gateway: 172.16.9.2Destination MAC: 0030.8517.44C4 Default gateway: 172.16.1.1Destination MAC: 0030.8517.44C4 Default gateway: 209.165.202.13016 A network administrator is asked to design a new addressing scheme for a corporate network. There are 60 users in the musers in the branch office, 28 users in manufacturing, 12 in the sales office, and 4 users in the research office. Which VLSM scheme that uses the 192.168.88.0/24 network will fulfill the requirements while wasting the fewest addresses?192.168.88.0/26 main192.168.88.64/26 manufacturing192.168.88.96/27 sales192.168.88.128/28 research192.168.88.0/26 main192.168.88.128/27 manufacturing192.168.88.160/28 sales192.168.88.176/29 research192.168.88.0/27 main192.168.88.64/28 manufacturing192.168.88.80/29 sales192.168.88.88/30 research192.168.88.0/27 main192.168.88.80/28 manufacturing192.168.88.96/29 sales192.168.88.104/30 research17Which physical connector type is used for a serial V.35 connection to the CSU/DSU?18Refer 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 shown. The rou ping the router that is directly connected to interface serial 0/0/0. What should the network technician do to solve this probleConfigure 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 streams?application layernetwork layerpresentation layersession layertransport layer22Refer to the exhibit. The NAT functionality of the router is enabled to provide Internet access to the PC. However, the PC is access the Internet. Which IP address should be changed to 209.165.201.1 to enable the PC to access the Internet?192.168.1.191192.168.1.101192.168.1.1192.168.1.25423Refer to the exhibit. A technician uses the nslookup command on the PC and views the output that is displayed in the exhib IP address of the primary domain name server used by the host?10.10.10.32192.168.1.5192.168.1.99192.168.2.10024Which memory contents will change as a result of using the Router# erase startup-config command on a router?RAMROMflashNVRAM25While configuring a router, a network technician wants to name the router. Which prompt should the technician see when e hostname command?Router>Router#Router(config)#Router(config-line)#26Refer to the exhibit. The PC, the routing table of which is displayed, is configured correctly. To which network device or inte IP address 192.168.1.254 belong?PCswitchrouter interface fa0/0router interface fa0/127Refer to the exhibit. A network administrator is troubleshooting a link that is down between Router1 and Router2. To correc which wire pairs need to be switched on one of the Ethernet cable ends?pair 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 its default gUse the ping 127.0.0.1 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 switch?The 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 FFFF.FFFF.FFFF address to port Fa0/19.30What information is contained in the header of Layer 3 to help data delivery?port 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 their accounts toany of the six computers. What type of network should be used?workgroupP2P 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 number of 4915 to the browser. The browser sends a request for a web page to the web server with an IP address 192.168.1.254/24. Which true?The session is established using TCP, and the socket number for the web server is 192.168.1.254: 80.The session is established using TCP, and the socket number for the web server is 192.168.1.254: 49152.The session is established using UDP, and the socket number for the web server is 192.168.1.254: 80.The session is established using UDP, and the socket number for the web server is 192.168.1.254: 49152.33Refer to the exhibit. An administrator on PC1 wants to view some HTML code from a web page housed on the web server. application will allow this request to be started?34Refer to the exhibit. What is required on host A for a network technician to create the initial configuration on Router1?an 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 administrenableauxconsoleVTY37Which three IPv4 addresses represent a broadcast for a subnet? (Choose three.)172.16.4.63 /26172.16.4.129 /26172.16.4.191 /26172.16.4.51 /27172.16.4.95 /27172.16.4.221 /2738Refer to the exhibit. Host X is unable to communicate with host Y. Which command can be run at host X to determine whic device is responsible for this failure?telnet 192.168.1.1ping 192.168.1.1ftp 192.168.1.1tracert 192.168.1.139Refer to the exhibit. Which option shows the correct topology given the configuration of Router1?40If an administrator wished to return a router to the default state, what additional step must be taken after issuing the comma start-up config?Reload 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 192.168.3.38 with the subnet mask. To what network does the workstation belong?192.168.3.8192.168.3.16192.168.3.24192.168.3.3242Which statement is true about router hostnames?A 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 mode?Configure the device.Configure individual interfaces.Configure individual terminal lines.Issue show and debug commands.44Refer to the exhibit. Which logical topology describes the exhibited network?starringpoint-to-pointmulti-access45Refer to the exhibit. A user wants to access the Internet from the PC. A part of the running configuration of the router is sho default gateway IP address should be configured at the PC to enable this access?10.1.192.110.1.192.210.1.192.54192.31.7.146Which statement is true about the ICMP protocol?It 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 problems?Layer 1Layer 2Layer 3Layer 448Refer to the exhibit. The host was disconnected from switch 2 and connected to switch 1. Which combination of IP address, and default gateway should be assigned to this host to allow it to function in the network?IP address: 10.10.9.37 Subnet mask: 255.255.255.240 Default gateway: 10.10.9.35IP address: 10.10.9.37 Subnet mask: 255.255.255.224 Default gateway: 10.10.9.35IP address: 10.10.9.29 Subnet mask: 255.255.255.248 Default gateway: 10.10.9.35IP address: 10.10.9.32 Subnet mask: 255.255.255.224 Default gateway: 10.10.9.35IP address: 10.10.9.37 Subnet mask: 255.255.255.224 Default gateway: 196.1.105.6IP address: 10.10.9.63 Subnet mask: 255.255.255.224 Default gateway: 10.10.9.3549Refer to the exhibit. The diagram represents the process of sending email between clients. Select the list below that correc the component or protocol used at each numbered stage of the diagram.1.MUA2.MDA3.MTA4.SMTP5.MTA6.POP7.MDA8.MUA1.MUA2.POP3.MDA4.SMTP5.MTA6.MDA7.SMTP8.MUA1.MUA2.POP3.SMTP4.MDA5.MTA6.SMTP7.POP8.MUA1.MDA2.SMTP3.MTA4.SMTP5.MTA6.MUA7.POP8.MDA1.MUA2.SMTP3.MTA4.SMTP5.MTA6.MDA7.POP8.MUA50What is the Cisco IOS?system software for Cisco devicesRead Only Memory in Cisco devicesnon-volatile storage for device configurationsan initial operating system that is used for boot functions。