Cisco Certified Network Associate (CCNA) Practice Exam

Which command is appropriate to confirm that OSPF v3 links are up?

1. #debug ipv6 ospf

2. #show ipv6 ospf interface

3. #show ipv6 ospf neighbor

4. #show ipv6 interface brief

The correct answer is: #show ipv6 interface brief

The command that accurately confirms if OSPFv3 links are up is the one that checks the state of the interfaces participating in OSPFv3. The command that achieves this is related to displaying OSPF interface details or neighboring relationships. The command that lists IPv6 interface statuses, including whether they are up or down and other relevant metrics, is the one that directly checks interface status. By using this command, you can see which interfaces are operationally up and can carry traffic, thus confirming the readiness for OSPFv3 operation. The other commands serve different purposes: - The command that involves debugging is used for troubleshooting and does not directly confirm the link state. - Checking the OSPF interface provides specific information about OSPF, but can be more focused on OSPF-specific metrics and not just the link state. - The neighbor command displays OSPF neighbors and their states, which is essential but secondary to determining if the links themselves are operational. Thus, the command to show interface statuses is the most appropriate for confirming that OSPFv3 links are indeed up.