Cisco Certified Network Associate (CCNA) Practice Exam

Which command would you use to display real-time OSPF v3 adjacency states?

1. #show ipv6 ospf neighbor

2. #debug ipv6 ospf adj

3. #show ipv6 interface brief

4. #show ospf interface

The correct answer is: #debug ipv6 ospf adj

The command that effectively displays real-time OSPF v3 adjacency states is the one that provides detailed, dynamic information about OSPF operations. In this case, the command to use is `#debug ipv6 ospf adj`. This command activates debugging for OSPF adjacency events, allowing you to see real-time changes in the adjacency states as they occur. It is particularly useful for troubleshooting OSPF-related issues, giving immediate feedback about neighbors transitioning between states, and any potential problems that might arise during the adjacency process. While other commands provide useful information about OSPF and its neighbors, they do not display information in real-time. For example, displaying neighbors might give a snapshot at a point in time, but it won't reflect changes as they happen. The `#show ipv6 ospf neighbor` command lists the current neighbors but lacks the real-time aspect that debugging provides. Similarly, `#show ipv6 interface brief` gives a summary of all interfaces but does not specifically focus on OSPF adjacencies, and `#show ospf interface` provides detailed information about the OSPF interfaces but also fails to capture real-time states like debugging does. Thus, for monitoring OSPF v3 adjacency states as they