2014年思科认证考试CCNA高分必备模拟试题（5）
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 cable diagram displays the end to end pinout for a crossover cable used with Cisco devices? (3)
1) Cable A
2) Cable B
3) Cable C
4) Cable D
2. A router interface has been assigned an IP address of 172.16.192.166 with a mask of 255.255.255.248. To which subnet does the IP address belong?
1) 172.16.0.0
2) 172.16.192.0
3) 172.16.192.128
4) 172.16.192.160
5) 172.16.192.168
6) 172.16.192.176
3. How is a MAC address represented? (4)
1) four groups of eight binary digits separated by a decimal point
2) four Base10 digits separated by a decimal point
3) six hexadecimal digits
4) twelve hexadecimal digits
5) twenty-four Base10 digits
4. Which of the following statements are correct about CSMA/CD? (Choose three.) (1，3，6)
1) It is a media access method used in LANs.
2) It is a media access method used in FDDI WANs.
3) When a device needs to transmit, it checks to see if the media is available.
4) A device sends data without checking media availability because all devices have equal access.
5) Multiple devices can successfully transmit simultaneously.
6) Only one device can successfully transmit at a time.
5. Which of the following increases the potential for a collision to occur? (4)
1) the use of an active hub instead of an intelligent hub
2) the use of an intelligent hub instead of an active hub
3) a reduction in the number of devices attached to the hub
4) an increase in the number of devices attached to the hub
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