C类网络192.168.100.0进行划分掩码为255.255.255.0

50台机的子网: 192.168.100.0/26 即192.168.100.0~192.168.100.63(子掩码255.255.255.192) 25台机的子网: 192.168.100.64/27 即192.168.100.64~192.168.100.95(子掩码255.255.255.224) 10台机的子网: 192.168.100.96/28 192.168.100.112/28 192.168.100.128/28 192.168.100.144