Cisco Certified Network Associate (CCNA) Practice Exam

Which command would you use to check the status of OSPF interfaces in terms of their up/down state?

1. #show ipv6 ospf neighbor

2. #show ipv6 ospf interface

3. #show ipv6 interface summary

4. #show ipv6 routing table

The correct answer is: #show ipv6 ospf interface

The command #show ipv6 ospf interface is used specifically to display the status of OSPF-enabled interfaces in terms of their up or down state as well as additional OSPF-specific information like cost, state, and the area they belong to. This command provides crucial details about which interfaces are actively participating in OSPF routing processes and whether they are operational. When evaluating the other options, #show ipv6 ospf neighbor focuses on the OSPF neighbor relationships rather than the state of the interfaces themselves. It provides information about neighbors discovered through OSPF but does not indicate the operational status of the interfaces. The command #show ipv6 interface summary gives a broader overview of all IPv6 interfaces, showing their status and IP addresses; however, it does not specifically filter for OSPF-related details, making it less useful for OSPF status checks. Lastly, #show ipv6 routing table displays the current state of the routing table and the routes learned, but does not provide information about the interface states or their status in OSPF. Overall, the use of #show ipv6 ospf interface is uniquely suited for checking the OSPF interface statuses, which is why it serves as the correct choice for