Cisco Certified Network Associate (CCNA) Practice Exam

To check the OSPF areas local router belongs to, which command should be used?

1. #show ip ospf

2. #show ip route

3. #show ip protocols

4. #debug ip ospf

The correct answer is: #show ip ospf

Using the command to show OSPF (Open Shortest Path First) information is essential for network administrators to understand the OSPF configuration and operation of routers within an OSPF routing domain. The command that provides comprehensive details about OSPF, including the areas in which the local router participates, is specifically designed to display OSPF-related information. When this command is executed, it will list various OSPF parameters, including the router ID, OSPF area configurations, types of OSPF networks, and any adjacency statuses with other routers. This information is crucial for troubleshooting and verifying OSPF functionality, allowing network engineers to ensure that their OSPF implementation is correctly set up and optimized. In contrast, while the other commands serve useful purposes, they do not specifically target OSPF area information. For instance, showing the IP route provides routing table information but lacks the detailed OSPF-specific data. The command to show IP protocols provides information about the different routing protocols enabled on a router but does not focus on OSPF area details. The debug command is primarily intended for real-time monitoring and troubleshooting, offering insights into OSPF processes, but it does not provide the static configuration details, making it less suitable