How do you configure the OSPF cost of an interface?

To configure the OSPF (Open Shortest Path First) cost of an interface, you use the command "ip ospf cost ". This command directly sets the OSPF cost metric for the specified interface, which is a numerical value representing the cost of using that interface for OSPF routing decisions.

The cost is calculated based on the bandwidth of the interface; higher bandwidth interfaces typically have a lower OSPF cost, making them more favorable for routing. By manually configuring the cost, network administrators can influence OSPF's path selection process to optimize network performance and efficiency.

Other options presented do not reflect correct command syntax as recognized by Cisco IOS. They may appear similar but do not correspond to the actual command used for setting the OSPF cost, which is why they are not valid choices. Understanding the correct command enables effective management of OSPF in a routing environment.