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1、250The Ethernet networks connected to router R1 in the graphic have been summarized for router R2 as192.1.144.0/20. Which of the following packet destination addresses will R2 forward to R1, according to this summary? (Choose two.)A.192.1.159.2 B.192.1.160.11 C.192.1.138.41 D.192.1.151.254 E.192.1.1
2、43.145 F.192.1.1.144 Answer: AD192.1.144.0/20所属网络的范围是：192.1.144.0/20-192.1.159.255/20251The show interfaces serial 0/0 command resulted in the output shown in the graphic. What are possible causes for this interface status? (Choose three.)A. The interface is shut down. B. No keepalive messages are r
3、eceived. C. The clockrate is not set. D. No loopback address is set.E. No cable is attached to the interface. F. There is a mismatch in the encapsulation type. Answer: BCF串口通过keepalive包保活端口。协议层down通常是时钟，封装，线缆使用不对造成。252Which of the following describe private IP addresses? (Choose two.)A. addresses ch
4、osen by a company to communicate with the InternetB. addresses that cannot be routed through the public InternetC. addresses that can be routed through the public Internet D. a scheme to conserve public addressesE. addresses licensed to enterprises or ISPs by an Internet registry organization Answer
5、: BD私有地址的特性 A：可以和互联网通信，错误 B：不能和互联网通信，正确。 C：能被互联网路由,错误 D：用于节省IP地址，正确。通过nat实现。 E：需要经过授权使用，错误。253Refer to the exhibit. The network shown in the diagram is experiencing connectivity problems. Which of the following will correct the problems? (Choose two.)A. Configure the gateway on Host A as 10.1.1.1. B
6、. Configure the gateway on Host B as 10.1.2.254. C. Configure the IP address of Host A as 10.1.2.2. D. Configure the IP address of Host B as 10.1.2.2.E. Configure the masks on both hosts to be 255.255.255.224F. Configure the masks on both hosts to be 255.255.255.240. Answer: BD考查VLSM。网关和主机IP需在同一个子网。
7、路由器子接口IP为这个vlan中主机的网关254A network associate is trying to understand the operation of the FLD Corporation by studying the network in the exhibit. The associate knows that the server in VLAN 4 provides the necessary resources to support the user hosts in the other VLANs. The associate needs to determi
8、ne which interfaces are access ports. Which interfaces are access ports? (Choose three.)A. Switch1 - Fa 0/2 B. Switch1 - Fa 0/9 C. Switch2 - Fa 0/3 D. Switch2 - Fa 0/4E. Switch2 - Fa 0/8 F. Router - Fa 1/0 Answer: ACD接主机的都需要设置为access口255Refer to the exhibit. W hich destination addresses will Host A
9、use to send data to Host B? (Choose two.)A. the IP address of Switch1 B. the IP address of Router1 Fa0/0 C. the IP address of HostBD. the MAC address of Switch1 E. the MAC address of Router1 Fa0/0F. the MAC address of HostB Answer: CE256The network security policy requires that only one host be perm
10、itted to attach dynamically to each switch interface. If that policy is violated, the interface should shut down. W hich two commands must the network administrator configure on the 2950 Catalyst switch to meet this policy? (Choose two.)A. Switch1(config-if)# switchport port-security maximum 1B. Swi
11、tch1(config)# mac-address-table secureC. Switch1(config)# access-list 10 permit ip hostD. Switch1(config-if)# switchport port-security violation shutdownE. Switch1(config-if)# ip access-group 10 Answer: AD257Refer to the graphic. A static route to the 10.5.6.0/24 network is to be configured on the H
12、FD router. Which commands will accomplish this? (Choose two.)A. HFD(config)# ip route 10.5.6.0 0.0.0.255 fa0/0B. HFD(config)# ip route 10.5.6.0 0.0.0.255 10.5.4.6C. HFD(config)# ip route 10.5.6.0 255.255.255.0 fa0/0D. HFD(config)# ip route 10.5.6.0 255.255.255.0 10.5.4.6E. HFD(config)# ip route 10.5
13、.4.6 0.0.0.255 10.5.6.0F. HFD(config)# ip route 10.5.4.6 255.255.255.0 10.5.6.0 Answer: CD考点：静态路由的配置方式 下一跳可以写出口和邻居IP258What should be done prior to backing up an IOS image to a TFTP server? (Choose three.)A. Make sure that the server can be reached across the network. B. Check that authentication fo
14、r TFTP access to the server is set.C. Assure that the network server has adequate space for the IOS image. D. Verify file naming and path requirements.E. Make sure that the server can store binary files.F. Adjust the TCP window size to speed up the transfer. Answer: ACD考点：考查升级IOS时的注意事项1、确保网络连通性，2、确保
15、设备有存放IOS的空间，3、确认文件的路径和名字 综上所述，ACD。259What are the possible trunking modes for a switch port? (Choose three.)A. transparent B. auto C. on D. desirable E. client F. forwarding Answer: BCD考点：考查交换机在trunk模式下的模式 auto：不会主动发DTP信息 on：强制成为trunk，也主动发DTP信息 desirable：DTP主动模式，发DTP和对方协商260The network 172.25.0.0 has been
