CCNA试题：Which of the following IP addresses fall into the CID

问题描述：

CCNA试题：
Which of the following IP addresses fall into the CIDR block of 110.68.4.0/18?(choose three)
A.110.68.8.32
B.110.68.7.64
C.110.67.6.255
D.110.66.3.254
E.110.65.5.128
F.110.64.12.128
答案为什么是BCE?
我的理解是110.68.4.0/18是一个A类地址块大小是64 所以网络地址是110.68.0.0
而书上说网络地址是110.64.0.0

1个回答分类：英语 2014-09-20