CCNA Practice Exam 2026 – Complete Study Resource

The command that displays the OSPF process number and router ID, along with other OSPF parameters, is "show ip protocols." This command provides vital information about the OSPF configuration and its operational parameters on the router. It lists details such as the OSPF routing process ID, router ID, networks being advertised, timers, and more, making it an essential command for network troubleshooting and verification of OSPF settings.

The other commands serve different purposes: "show running-config" displays the entire current configuration of the router, which includes OSPF settings but does not focus specifically on OSPF details. "display ospf information" is not a valid command in Cisco IOS, as this syntax aligns more with other manufacturers' devices. Lastly, "show ip route" is used to display the routing table and provides insights into the routing paths but does not detail OSPF-specific parameters like the process number or router ID.