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中职网络子网划分例题解析
2022-07-03 05:26:00 【与人点】
一、子网掩码的确定
依据题目直接给出几个子网(直接法)。给出主机数量,则需要算出主机所占位数,最后用默认子网掩码主机位数减去要求的主机位数,得出子网位数(间接法)
1.确定占IP中几位主机位作为子网标识
A.将数字转化为二进制数看几位。B.2n-1<X<2n N即为子网标识位数。
2.依IP类型,写出默认子网掩码二进制。
3.在默认二进制子网掩码之上,将主机标识几位改为1.并转换为十进制
二、子网的划分
根据给出的IP地址218.98.101.0,默认子网掩码为255.255.255.0,所以可以确定,网络地址为218.98.101,主机地址为0
划分子网重点在主机地址上,转化为二进制为00000000
1.子网标识占3位
要求划分6个子网,那么子网标识为3位,具体划分如下:

2、如果子网标识占2位

3、如果子网标识占4位
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