选项
A.
DCR2501(config)ip route 192.168.30.0 255.255.255.0 192.168.20.2
B.
DCR2501(config)ip route 192.168.30.0 255.255.255.0 192.168.20.0
C.
DCR2501(config-serial1/0)#ip route 192.168.30.1 255.255.255.0 192.168.20.2
D.
DCR2501(config-serial1/0)#ip route 192.168.30.0 255.255.255.0 192.168.20.2
正确答案:A