Cisco Certified Network Associate (CCNA) Practice Exam

How can you confirm that OSPF v. 3 router's interfaces are not in passive mode?

1. show ipv6 ospf

2. show ipv6 ospf database

3. show ipv6 ospf interface

4. show ipv6 route

The correct answer is: show ipv6 ospf interface

To confirm that OSPFv3 router's interfaces are not in passive mode, the appropriate command to use is one that displays the status of the interfaces within the OSPF process. The command that shows detailed information about each interface's state with regard to OSPF, including whether they are in passive mode or active mode, is specifically designed to provide insights into how OSPF is configured on each interface. When you execute the command that displays OSPF information for each interface, you can see parameters such as the interface's state, the OSPF cost, and whether the interface is actively participating in OSPF or not. If the interfaces are active, they will show as "up" or indicate that OSPF packets are being sent and received, meaning they are not in passive mode. In contrast, if they were in passive mode, it would specifically indicate that those interfaces do not send or receive OSPF hello packets, which means they aren't participating in OSPF. Other options do not directly provide information regarding the active/passive state of OSPF interfaces. Commands showing the OSPF process, database, or routing information lack the specific focus on interface states that is key to determining whether interfaces are in