A.proxy B.dual-stack C.tunneling D.dot1q
A.user EXEC mode B.global configuration mode C.privileged EXEC mode D.auxiliary setup mode
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