A. 对 B. 错
A.ip route 192.168.1.1 255.255.255.0 serial0/0 B.ip route 192.168.1.0 24 172.16.1.1 C.ip route 192.168.1.0 255.255.255.0 172.16.1.0 D.ip route 192.168.1.0 255.255.255.0 172.16.1.1
A.ip route 129.1.0.0 16 serial 0 B.ip route 10.0.0.2 16 129.1.0.0 C.ip route 129.1.0.0 16 10.0.0.2 D.ip route 129.1.0.0 255.255.0.0 10.0.0.2