What OSPF command adjusts the priority level of an interface?

The command that adjusts the priority level of an interface in OSPF (Open Shortest Path First) is "ip ospf priority." This command is used in interface configuration mode to set the priority of a specific interface that participates in OSPF routing. The priority value can range from 0 to 255, where a higher priority means a higher likelihood of being elected as the designated router (DR) on a multi-access network segment.

In a broadcast network, the election of the DR and backup designated router (BDR) is crucial for reducing the amount of OSPF routing information exchanged between routers. By using "ip ospf priority," you can influence which router will take on the role of DR, enhancing network efficiency and stability.

Other commands listed either do not exist in the OSPF command set or do not apply to setting interface priority within OSPF, making "ip ospf priority" the correct choice for this function.