1、CISCOCCNA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：CCNA题库战报交流QQ群：144288127 （500人超级群）CCNA题库战报交流区： 1000 G视频教程免费下载：CCNA（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 V1
2、06 V108等等CCNA 最新题库/最新战报 发布区： 下载官方正版题库、看最新考试战报，请随时关注 鸿鹄论坛 CCNA考试报名1900，详情请联系鸿鹄全国区十七名客服 QQ 7120206=更新内容：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
3、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/
4、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
5、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
6、交换机 CAT1 和 CAT2 有它们之间的连接使用端口 FA0/13。两个交换机之间用802.1Q中继配置，CAT1做为VLAN10的主机，但在 CAT2 上的本地 VLAN 未指定。在这种情况下会发生什么？)A. 802.1Q giants frames could saturate the link.B. VLAN 10 on CAT1 and VLAN 1 on CAT2 will send untagged frames.C. A native VLAN mismatch error message will appear.D. VLAN 10 on CAT1 and VLAN 1
7、on CAT2 will send tagged frames.Answer: CSection: Chapter 10: VLANExplanation/Reference:如果两边native不匹配的话.switch将报native不匹配的日志信息QUESTION 4Which command would correctly configure a serial port on a router with the last usable host address in the 192.216.32.32/29 subnet?（哪个命令正确地将最后的可用主机地址，192.216.32.32/
8、29 子网的路由器上配置的串行端口？）A. Router(config-if)# ip address 192.216.32.38 255.255.255.240B. Router(config-if)# ip address 192.216.32.39 255.255.255.224C. Router(config-if)# ip address 192.216.32.63 255.255.255.248D. Router(config-if)# ip address 192.216.32.39 255.255.255.248E. Router(config-if)# ip address
9、192.216.32.63 255.255.255.248F. Router(config-if)# ip address 192.216.32.38 255.255.255.248Answer: FSection: Chapter 4: Introduction to Cisco IOSExplanation/Reference:192.216.32.32/29它的块大小为8掩码为255.255.255.248地址范围为192.216.32.32-39QUESTION 5The network default gateway applying to a host by DHCP is 192
10、.168.5.33/28. Which option is the valid IP address of this host?(应用到由 DHCP 主机的网络默认网关是 192.168.5.33/28。哪个选项是有效的主机IP 地址？)A. 192.168.5.55B. 192.168.5.47C. 192.168.5.40D. 192.168.5.32E. 192.168.5.14Answer: CSection: Chapter 3: IP Addressing and VLSMExplanation/Reference:考点：考查VLSM192.168.5.33/28所在网段的范围是1
11、92.168.5.32-192.168.5.47/28A：超出范围B：广播地址C：正确D：网络号E：超出范围QUESTION 6Which two addresses can be assigned to a host with a subnet mask of 255.255.254.0? (Choose two.)哪两个地址可以分配给与子网掩码 255.255.254.0 的主机？A. 113.10.4.0B. 186.54.3.0C. 175.33.3.255D. 26.35.2.255E. 17.35.36.0Answer: BDSection: Chapter 3: IP Addre
12、ssing and VLSMExplanation/Reference:考点：考查VLSMA：网络号B/D：正确C：广播地址E：网络号QUESTION 7The network administrator has asked you to check the status of the workstations IP stack by pinging the loopback address. Which address would you ping to perform this task?网络管理员已要求您通过 ping 环回地址检查工作站的 IP 堆栈的状态。您要执行此任务将 ping
13、哪个地址？A. 10.1.1.1B. 127.0.0.1C. 192.168.0.1D. 239.1.1.1Answer: BSection: Chapter 3: IP Addressing and VLSMExplanation/Reference:考点：使用ping来检测主机的IP栈。ping 127.0.0.1实现。QUESTION 8Workstation A has been assigned an IP address of 192.0.2.24/28. Workstation B has been assigned an IP address of 192.0.2.100/28
14、. The two workstations are connected with a straight-through cable. Attempts to ping between the hosts are unsuccessful. What two things can be done to allow communications between the hosts? (Choose two.)A 工作站已分配 IP 地址为 192.0.2.24/28。B 工作站已分配 IP 地址为 192.0.2.100/28。两台工作站与直通电缆连接。在主机之间 ping 不成功。允许在主机之
15、间的通信，可以做两件事情？（选择两个）。A. Replace the straight-through cable with a crossover cable.B. Change the subnet mask of the hosts to /25.C. Change the subnet mask of the hosts to /26.D. Change the address of Workstation A to 192.0.2.15.E. Change the address of Workstation B to 192.0.2.111.Answer: ABSection: C
16、hapter 3: IP Addressing and VLSMExplanation/Reference:考点：同构设备使用交叉线，两端的IP需要在同一个子网。A：使用交叉线替换现有的直通线。正确。B：修改掩码为25位，正确。C：修改掩码为26为，错误。不能使他们在同一个子网。D/E：错误，都不能使他们在同一个子网。QUESTION 9Your ISP has given you the address 223.5.14.6/29 to assign to your routers interface. They have also given you the default gateway
17、 address of 223.5.14.7. After you have configured the address, the router is unable to ping any remote devices. What is preventing the router from pinging remote devices?(您的 ISP 给你要分配给您的路由器接口地址 223.5.14.6/29。他们还授予您是 223.5.14.7 的默认网关地址。您已配置了地址后，路由器是无法 ping 任何远程设备。什么在阻碍 pinging 远程设备的路由器？)A. The defaul
18、t gateway is not an address on this subnet.B. The default gateway is the broadcast address for this subnet.C. The IP address is the broadcast address for this subnet.D. The IP address is an invalid class D multicast address.Answer: BSection: Chapter 3: IP Addressing and VLSMExplanation/Reference:考点：
19、考查VLSM。223.5.14.6/29所在网段的范围是：223.5.14.0-223.5.14.7/29A：默认网关不属于这个子网，错误B：默认网关是这个子网的广播地址，正确C：这个地址是子网的广播地址，错误D：这个地址是组播地址，错误。QUESTION 10Which command is used to copy the configuration from RAM into NVRAM?哪个命令用于从RAM复制到NVRAM的配置A. copy running-config startup-configB. copy startup-config: running-config:C. c
20、opy running config startup configD. copy startup config running configE. write terminalAnswer: ASection: Chapter 4: Introduction to Cisco IOSExplanation/Reference:QUESTION 11Which command is used to load a configuration from a T and merge the configuration into RAM?(哪些命令用于从 TFTP 服务器加载配置或合并到 RAM 的配置？
21、)A. copy running-config: TFTP:B. copy TFTP: running-configC. copy TFTP: startup-configD. copy startup-config: TFTP:Answer: BSection: Chapter 4: Introduction to Cisco IOSExplanation/Reference:QUESTION 12A system administrator types the command to change the hostname of a router. Where on the Cisco IF
22、S is that change stored?A. NVRAMB. RAMC. FLASHD. ROME. PCMCIAAnswer: BSection: Chapter 4: Introduction to Cisco IOSExplanation/Reference:running-config保存在RAM中startup-config保存在NVRAM中QUESTION 13Which command is used to configure a default route?A. ip route 172.16.1.0 255.255.255.0 0.0.0.0B. ip route 1
23、72.16.1.0 255.255.255.0 172.16.2.1C. ip route 0.0.0.0 255.255.255.0 172.16.2.1D. ip route 0.0.0.0 0.0.0.0 172.16.2.1Answer: DSection: Chapter 6: IP RoutingExplanation/Reference:QUESTION 14If IP routing is enabled, which two commands set the gateway of last resort to the default gateway?（如果启用了 IP 路由，
24、哪两个命令设置网关的最后到默认网关？）(Choose two.)A. ip default-gateway 0.0.0.0B. ip route 172.16.2.1 0.0.0.0 0.0.0.0C. ip default-network 0.0.0.0D. ip default-route 0.0.0.0 0.0.0.0 172.16.2.1E. ip route 0.0.0.0 0.0.0.0 172.16.2.1Answer: CESection: Chapter 6: IP RoutingExplanation/Reference:产生默认网关的两种方式ip default-netw
25、orkip routeQUESTION 15Which command would you configure globally on a Cisco router that would allow you to view directly connected Cisco devices?(该命令将全局上配置使您可以直接查看的 Cisco 路由器连接 Cisco 设备吗？)A. enable cdpB. cdp enableC. cdp runD. run cdpAnswer: CSection: Chapter 5: Managing Cisco IOSExplanation/Referen
26、ce:QUESTION 16Which command is used to see the path taken by packets across an IP network?(哪些命令用于看到通过 IP 网络数据包所采取的路径？)A. show ip routeB. show routeC. tracerouteD. trace ip routeAnswer: CSection: Chapter 2: TCP/IPExplanation/Reference:哪条命令用于查看数据包转发所经过的路径A:查看路由表B：没有这条命令C：正确D：没这条命令QUESTION 17Which comm
27、and is used to debug a ping command?哪些命令用于调试 ping 命令？A. debug icmpB. debug ip icmpC. debug tcpD. debug packetAnswer: BSection: Chapter 5: Managing Cisco IOSExplanation/Reference:ping调用了icmp协议，而icmp数据包封装在ip包中。QUESTION 18Which command displays CPU utilization?哪个命令显示的 CPU 利用率呢？A. show protocolsB. show
28、processC. show systemD. show versionAnswer: BSection: Chapter 5: Managing Cisco IOSExplanation/Reference:查看CPU利用率。QUESTION 19When configuring a serial interface on a router, what is the default encapsulation?在配置一个串行接口的路由器，什么是默认的封装？A. atm-dxiB. frame-relayC. hdlcD. lapbE. pppAnswer: CSection: Chapter
29、 14: Wide Area Network (WAN)Explanation/Reference:缺省封装是HDLCQUESTION 20What must be set correctly when configuring a serial interface so that higher-level protocols calculate the best route?什么时，必须设置正确配置串行接口，以便更高级别的协议计算最佳路线？A. bandwidthB. delayC. loadD. reliabilityAnswer: ASection: Chapter 6: IP Routi
30、ngExplanation/Reference:为了使高层路由协议计算最佳路由，串口的什么东西必须被设置正确？在接口下，只有带宽是可以配置的。QUESTION 21A company implements video conferencing over IP on their Ethernet LAN. The users notice that the network slows down, and the video either stutters or fails completely. What is the most likely reason for this?公司对他们的以太网
31、LAN ip 实现视频会议。用户注意网络变慢，和视频断断续续或完全失败。最有可能的原因是什么？A. minimum cell rate (MCR)B. quality of service (QoS)C. modulationD. packet switching exchange (PSE)E. reliable transport protocol (RTP)Answer: BSection: Chapter 9: SwitchingExplanation/Reference:考点：当网络中使用视频会议后发现网络非常慢，什么原因引起的？QoS：用于定制策略对不同流量进行控制。QUESTION 2
