You have been tasked with setting up OSPF on an existing Cisco router using IPv6. Which
command enables OSPF for IPv6 on a router?

A.
ipv6 router ospf process-id

B.
router ospf process-id

C.
router ospf ipv6 process-id

D.
ipv6 ospf process-id area-id

E.
None of the above

Explanation:
The command “ipv6 router ospf process-id” is used to enable an OSPF process on the
router. For example:
Router(config)#ipv6 router ospf 1
Note: This command is used in global configuration mode.