为了帮助广大考生系统全面的复习好《思科认证：CCNA认证学科》，我们考吧网整理了思科认证模拟试题，本次汇编的模拟试题希望对你的考试有所帮助，预祝你考试顺利。

推荐阅读：思科认证：CCNA认证考前经典试题训练汇总三

1. You add the following commands into a routed topology: router eigrp 1 variance 3 traffic-share min across-interfaces. Users now complain about voice quality in your VoIP system. What should be done?

你在路由器上加入了下面的命令 “router eigrp 1 variance 3 traffic-share min across-interfaces”用户现在抱怨在Voip服务中语音通信质量很差，你该怎么做?

A. Add the command: router eigrp 1 traffic-share voice interface fast 0/0. B. Reconfigure EIGRP to recognize voice packets. C. Remove the variance from the configuration. 删除这条配置命令 D. Reconfigure the VoIP system to use RTP sequence number headers. E. Use an H.323 gatekeeper for your VoIP system to negotiate an H.245 uneven packet buffer. F. Reconfigure EIGRP to version 2.

Answer: C

2. Refer to the exhibit. Users on the 199.155.24.0 network are unable to reach the 172.16.10.0 network. What is the most likely solution?

如图所示，199.155.24.0网段的用户不能和172.16.10.0网段通信，这是什么原因?

A. Router ISP1 should be configured to peer with router B. B. Router ISP2 should be configured with no synchronization. C. Router ISP1 should be configured with no synchronization. D. Router ISP2 should be configured with no auto-summary. E. Router ISP1 or IPS2 should be configured with network 176.16.10.0 mask 255.255.255.0.

路由器ISP1和ISP2都没有宣告176.16.10.0/24网段

Answer: E

3. Two BGP peers connected through a routed firewall are unable to establish a peering relationship. What could be the most likely cause?

两个直连BGP邻居，无法通过防火墙建立邻居关系，最有可能是什么原因?

A. BGP peers must be Layer 2-adjacent. B. EBGP multihop is not configured. EBGP邻居的多跳没有设置 C. The firewall is not configured to allow IP protocol 89. D. The firewall is not configured to allow UDP 179.

Answer: B

4. Which two of these steps are minimum requirements to configure OSPFv3 under IPv6? (Choose two.) 需要哪两个步骤开始用最基本在IPv6上使用OSPFv3协议 A. Configure a routing process using the command ipv6 router ospf [process-id]. B. Add the network statement for the interfaces on which OSPF will run. C. Configure OSPF on the interface that it will run on. D. Use the passive-interface command on the interfaces on which OSPF should not run. E. Enable routing.

Answer: CE

5. Refer to the exhibit. Router E learned about the PIM RP (designated as 7.7.7.7) from four different sources. Routers A and D advertised the 7.0.0.0 network via EIGRP. Routers B and C advertised the 7.0.0.0 network via OSPF. Considering that all four Ethernet interfaces on router E could potentially lead back to the PIM-RP, when router E receives the first multicast packet down the shared tree, which incoming interface will be used to successfully pass the RPF check?

如图所示，路由器E从不同渠道学习7.7.7.7的的路由。路由器A和D在EIGRP中通告的7.0.0.0 的路由，路由器B和C在OSPF中通告的7.0.0.0的路由。考虑到4个网口都能连接到PIM-RP。 当路由器E收到第一个多播包在共享树。哪个接口能在入方向通过RPF检查?(答案可能有不准)

A. E0 B. E1 C. E2 D. E3 E. None of these interfaces will be used to successfully pass the RPF check. F. All of these interfaces would successfully pass the RPF check.

Answer: A