局域网的网络地址192.168.1.0/24,局域网络连接其它网络的网关地址是192.168.1.1。主机192.168.1
A、route add -net 192.168.1.0 gw 192.168.1.1 netmask 255.255.255.0 metric 1
B、route add -net 172.16.1.0 gw 192.168.1.1 netmask 255.255.255.0 metric 1
C、route add -net 172.16.1.0 gw 172.16.1.1 netmask 255.255.255.0 metric 1
D、route add default 192.168.1.0 netmask 172.168.1.1 metric 1