What command verifies that OSPF is enabled and lists the networks being advertised?

The command that verifies OSPF is enabled and lists the networks being advertised is "show ip protocols." This command provides comprehensive information regarding the routing protocols that are active on the router, including OSPF. Specifically, it shows OSPF configuration details, the networks that OSPF is advertising, and the OSPF neighbors.

When using "show ip protocols," you receive insights into all configured routing protocols, not just OSPF. This includes the routing protocol metrics, timers, and specific networks involved, giving a broad overview of the routing configuration on the device. This level of detail is essential for network troubleshooting and verification.

The other commands do not provide the same level of specificity regarding OSPF advertisements. For instance, "show routing protocols" is not a valid command on Cisco devices, as it does not exist in the command line interface. The command "show ip ospf" yields only information related to OSPF parameters and neighbor relationships without detailing the advertised networks. "Show interface status" pertains to the operational status of interfaces and does not include OSPF-specific information. Thus, "show ip protocols" is the most appropriate command for verifying OSPF configurations and advertisements.