那位兄弟能解释下面CCNA提,看不懂QUESTION NO:39Which of the following IP hosts would be valid for PC users,assuming that a /27network mask was used for all of the networks?(Choose all that apply.)A．15.234.118.63B.83
网友回答
共32为嘛27为掩码就是224,这个掩码每个段呢就最多32个地址,但是除去网络地址1和广播地址31之后 就省30个了,就是1-31、34-62是可以用的 以此类推.