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.what is the correct order for the osi model?

p=presentation, s=session, d=datalink, ph=physical, t=transport, a= application, n=network

a. p s a ph d n t

b. a p s t n d ph

c. ph d n t a s p

d. p s a t n d ph

answer b. it is crucial you not only memorize this and know what each layer does.

2. cdp operates at which layer?

a. transport

b. network

c. data link

d. physical

answer c. cdp allows a network device to exchange frames with other directly connected networked devices.

3 which command does not show two devices are not routing packets between them successfully?

a. ping

b. show interface

c. trace

d. telnet

answer a c d. with these commands you can tell whether or not you have communication. show interface just verifies there is a connection

4. what is encapsulation?

a. putting the header on an incoming frame

b. putting a header on an incoming segment

c. putting a header on an outgoing frame

d. putting a header on an outgoing bit

answer c. this also includes trailers and can be put on segments, packets, and frames.

5 which layer is most concerned with user applications?

a. application

b. presentation

c. network

d. physical

answer a.