2014年思科认证：CCNA认证考试高分必备试题及答案10
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
1Which of the following features is provided by RIP v2 that were previouslynot possible with RIP v1? (Choose all that apply.)
A. Classless routing and split-horizon.
B. Poison reverse and updating to multicast addresses.
C. Poison reverse and classless routing.
D. Classless routing and updating to multicast addresses.
E. Route tag and classless routing.
2.What does the BGP backdoor command do?
A. It changes the distance of an iBGP route to 20.
B. It changes the distance of an eBGP route to 200.
C. It changes the distance of an IGP route to 20.
D. It does not effect any changes in distance of the route.
E. It changes the distance of an IGRP route to 200.
3.Which of the following DNS resource records is not valid?
A. NS
B. PTR
C. MX
D. FQDN
E. A
4Which of the following services uses a process called windowing (下面的哪一个服务使用了所谓的窗口机制)?
A. Reliable data transfer
B. Connection-oriented virtual circuit
C. Buffered transfer
D. Resequencing
E. Multiplexing
F. Efficient, full-duplex transmission
G. Flow control
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