2013年思科认证：CiscoCCNA考试精选试题(12)
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。
1. which of the following is a class a ip address?
a. 10.14.16.12
b. 127.0.0.1
c. 172.15.42.34
d. 209.123.32.212
answer a.
2. which of the following about arp is true? choose 2
a. it is in the application layer
b. it is in the network layer
c. it maps mac addresses to ip addresses
d. it maps ip addresses to mac addresses
answer b d. at the same layer are rarp, icmp, and ip. rarp does what is in answer c.
3. what protocol in the transport layer does not guarantee packet delivery?
a. tcp
b. ip
c. ipx
d. udp
answer d. it does a best effort delivery, but is faster than tcp.
4. which of the following is not a job for the presentation layer? choose 2
a. data representation
b. compression
c. dialog management
d. transmission
e. encryption
answer c d. c is handled by the session layer, and d is handled by the transport layer
5. what does peer to peer communication involve?
a. each layer communication with the layer below it
b. each layer communication with layer above it
c. each layer communicating with adjacent layer in another system
d. each layer communication with it s corresponding layer in another system
answer d. answer c sounds correct also, but adjacent and corresponding are two different things. the session layer can only communicate with the session layer in another system for example.