问题详情
IP地址192.168.1.1的子网掩码为255.255.255.0,其网络地址是( ),其直接广播地址为( )。
A.192.168.1.1 B.192.168.1.0 C.192.168.0.0 D.0.0.0.0
A.255.255.255.255 B.192.255.255.255 C.192.168.255.255 D.192.168.1.255