A.blocking B.learning C.disabled D.forwarding E.listening
A.Router(config)#router ospf 1 B.Router(config)#router ospf 0 C.Router(config)#router ospf area 0 D.Router(config-router)#network 192.168.16.0 0.0.0.255 area 0 E.Router(config-router)#network 192.168.16.0 0.0.0.255 0 F.Router(config-router)#network 192.168.16.0 255.255.255.0 area 0
A.510 B.1022 C.1024 D.2048