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 device must be used between an AUI port of a networking device and the media to which it is being connected? (3)

1) a transducer

2) a transmitter

3) a transceiver

4) a transponder

5) a port replicator

2. An ISDN Basic Rate Interface (BRI) is composed of how many signaling channels? (1)

1) 1

2) 2

3) 3

4) 4

3. The highest capacity Ethernet technologies should be implemented in which areas of a network? (Choose three.) (3，4，5)

5) between workstation and backbone switch

6) between individual workstations

7) between backbone switches

8) between enterprise server and switch

9) on aggregate access links

4. Which layer of the OSI model covers physical media? (1)

1) Layer 1

2) Layer 2

3) Layer 3

4) Layer 4

5) Layer 5

6) Layer 6

5. How does network cable length affect attenuation? (3)

1) Category 5 cable that is run in metal conduit has the highest attenuation in the shortest distance.

2) Shorter cable lengths have greater signal attenuation.

3) Longer cable lengths have greater signal attenuation.

4) The length of the cable has no effect on signal attenuation.