How would you enable OSPF on a specific interface?

Enabling OSPF (Open Shortest Path First) on a specific interface involves configuring the interface to participate in OSPF and associating it with a specific OSPF area. The command that accomplishes this is structured to specify both the OSPF process ID and the area ID that the interface will join.

When you use the command 'ip ospf process-id area area-id', you are explicitly stating that you want to enable the OSPF protocol for the given interface, associating it with a specific OSPF process identified by 'process-id' and linking it to the designated 'area-id'. This command must be executed in the interface configuration mode after entering the global configuration mode.

The OSPF process ID is crucial because it uniquely identifies the OSPF routing process on the router and allows for multiple OSPF processes to exist independently on the same router, as long as they have different process IDs. This is particularly useful in complex network designs or in scenarios where different configurations are required for different parts of the network.

While the other choices may seem relevant at first glance, they do not accurately describe the correct syntax or do not function as valid OSPF commands for interface configuration. Thus, option B is the