（1）假设某单位已从NIC处得到一个C类IP地址211.70.248.0,现根据需要将它划分为12个不同的子网,每个子网

Question

（1）假设某单位已从NIC处得到一个C类IP地址211.70.248.0,现根据需要将它划分为12个不同的子网,每个子网

Answer 1

您要划分的IP地址是：211.070.248.000 是 C 类IP地址
您要划分的子网数量是 12 个,子网掩码是：255.255.255.240
每段子网的网络号是TO前IP的最后一位减1
每段子网的广播地址是TO后IP最后一位加1
1> 211.070.248.1 TO 211.070.248.14
2> 211.070.248.17 TO 211.070.248.30
3> 211.070.248.33 TO 211.070.248.46
4> 211.070.248.49 TO 211.070.248.62
5> 211.070.248.65 TO 211.070.248.78
6> 211.070.248.81 TO 211.070.248.94
7> 211.070.248.97 TO 211.070.248.110
8> 211.070.248.113 TO 211.070.248.126
9> 211.070.248.129 TO 211.070.248.142
10> 211.070.248.145 TO 211.070.248.158
11> 211.070.248.161 TO 211.070.248.174
12> 211.070.248.177 TO 211.070.248.190
13> 211.070.248.193 TO 211.070.248.206
14> 211.070.248.209 TO 211.070.248.222
15> 211.070.248.225 TO 211.070.248.238
16> 211.070.248.241 TO 211.070.248.254