2014年思科认证考试CCNA备考模拟试题四
为了帮助考生们复习好《思科认证：CCNA认证学科》，我们考吧网整理了一些关于思科认证：CCNA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. Which of the following is not valid?(www.Examw.com)
A. router>show version B. router#show running-config
C. router#show startup-config D. router#show RAM
Answer D.
2. Which of the following are basic router functions?
A. Packet switching B. Packet filtering
C. Path determination D. Rapid convergence
Answer A and C. Packets get switched once they are determined by the router where
to go.
3. Which of the following is not an interior routing protocol?
A. RIP B. IGRP C. OSPF D. BGP
Answer D. BGP is an exterior routing protocol designed to communicate between
autonomous systems.
4. How do you back up a router?
A. router#copy running-config startup-configuration
B. router(config)#copy TFTP flash
C. router#copy flash TFTP D. router#copy flash NVRAM
Answer C. You can copy the file to a TFTP server or other storage device.
5. Which of the following routing protocols communicate router information by
sending the state of it s links to all routers in it s domain?
A. BGP B. RIP C. IGRP D. OSPF
Answer D. This is a "link state" routing protocol. RIP and IGRP are distance
vector, and BGP communicates reachability between domains.
6. What is a problem caused by distance vector routing protocols?
A. Split horizon B. Route Poison
C. Counting to infinity D. Max hop count E. Hold down timers
Answer C. Answers ABDE are counter measures to the counting to infinity problem
caused by distance vector protocols.
7. What is considered Layer 3 addressing?
A. Data Link Layer B. Network Layer
C. Application Layer D. None of these
Answer B. Physical is Layer 1, then data link, and then Network. This is the same
layer that routers are on.
8. What layer are Bridges on?
A. Data Link B. Physical C. Application D. Transport
Answer A. Bridges segment networks but are not able to determine addresses like the
network layer does.
9. Repeaters are on what layer?
A. Transport B. Session C. Physical D. Application
Answer C. All repeaters can do is boost a signal. An active hub is a good example
of a repeater. A switching hub is a good example of layer 3 addressing, since
switches go by network addresses and IPX addresses rather than just boost signals.
Bridges can only read mac addresses, and not the full IPX or TCPIP addresses.
10. Which of the following are considered routing protocols?
A. OSPF B. IP C. IPX D. EIGRP E. Token Ring
Answer A D. Answers B and C are routed protocols, whereas A and D are the protocols
that do the routing. This is easily confused. You can remember it by thinking that
the routing protocols that haul the routed protocols are like a tug ship pulling a
barge. The barge is full of data.
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