A.Router#iproute0.0.0.00.0.0.0192.168.100.1
B.Router#iproute0.0.0.0255.255.255.255192.168.100.1
C.Router(Config)#iproute0.0.0.00.0.0.0192.168.100.1
D.Router(Config)#iproute0.0.0.0255.255.255.255192.168.100.1
A.500m
B.1km
C.2km
D.40km
A./
B./kernel
C./etc
D./boot