思科认证：CCNA认证考前精选模拟试题3
思科知识的学习在一定基础上还是有些难度，为了帮助考生们复习好《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。
1. Refer to the exhibit. Routers A and B are directly connected and running OSPF, but they are unable to form a neighbor relationship. What is the most likely cause?
如图所示，路由器A和B直接连接并且都运行OSPF，但是它们没有成为邻居，这是什么问题
A. The routers are not on the same network. B. The network statements do not match. C. The process number does not match. D. The MTU does not match. E. The OSPF cost does not match. F. There is a physical issue with the cable.
Answer: D
2. 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
3. Refer to the exhibit. How would you get the 1.1.1.1 network into the OSPF database?
如图所示，怎么做可以让1.1.1.1网络进入OSPF数据库中?
A. Configure RTA as an ASBR.
B. Redistribute connected routes on RTA into OSPF. C. Set up a virtual link between area 1 and area 0.
建立一条虚链路在区域1和区域0之间
D. Set up a virtual link between area 1 and area 2. E. Add a static route into RTB and enter it into OSPF. F. Place a network 1.1.1.0 0.0.0.0 command into RTB. G. Set up a unique router ID on RTA using an RFC 1918 address. H. Change area 0 on RTB to area 1
Answer: C
4.. 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?
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
5.. Which of these best describes the actions taken when a VTP message is received on a switch configured with the VTP mode "transparent"?
那一项最能说明，收到的VTP信息是从透明模式的交换机收到的?
A. VTP updates are ignored and forwarded out all ports.
B. VTP updates are ignored and forwarded out trunks only.
C. VTP updates are made to the VLAN database and are forwarded out trunks only.
D. VTP updates are ignored and are not forwarded.
Answer: B
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