实验步骤：IP路由表如图 子网转换：202.203.204.0的C类子网划分 平均分成四（2的二次方）个子网，即网络前缀位数增加2 先转化为2进制为 11001010.11001011.11001100.00000000 平均分为四个为 11001010.11001011.11001100.00000000 11001010.11001011.11001100.01000000 11001010.11001011.11001100.10000000 11001010.11001011.11001100.11000000 转化为10进制 202.203.204.0 202.203.204.64 202.203.204.128 202.203.204.192 所以四个子网的起始范围为 202.203.204.0-202.203.204.63 202.203.204.64-202.203.204.127 202.203.204.128-202.203.204.191 202.203.204.192-202.203.204.255 子网掩码均为255.255.255.192

同样的202.203.244.0分成8个子网为 202.203.244.0-202.203.244.31 202.203.244.32-202.203.244.63 202.203.244.64-202.203.244.95 202.203.244.96-202.203.244.127 202.203.244.128-202.203.244.0159 202.203.244.160-202.203.244.191 202.203.244.192-202.203.244.223 202.203.244.224-202.203.244.0255 子网掩码为255.255.255.224

实验心得：这个二进制挺有意思的