今天自测“ 思科CCNA考点逐个击破之IP&VLSM(2)”只得了30分,感觉不对,仔细对了下正确答案,发现应该是答案有误,这是我在自测中发现错误最多的,有点误人子弟了!

1

Which of the following IP addresses fall into the CIDR block of 115.64.4.0/22? (Choose three.)

A. 115.64.8.32B. 115.64.7.64C. 115.64.6.255D. 115.64.3.255E. 115.64.5.128F. 115.64.12.128

答案是CEF,我认为应该是BCE,/22,只能是4-7。

2

Refer to the exhibit. All of the routers in the network are configured with the ip subnet-zero command.
Which network addresses should be used for Link A and Network A? (Choose two.)

思科CCNA考点逐个击破之IP&VLSM(2)自测考试有问题_IP&VLSM

A. Network A - 172.16.3.48/26B. Network A - 172.16.3.128/25C. Network A - 172.16.3.192/26D. Link A - 172.16.3.0/30E. Link A - 172.16.3.40/30F. Link A - 172.16.3.112/30

答案AD,我认为是BD,有120个主机,只有/25,128个地址的才能包括,而且只有后半个C才有128个IP。