All routers in a network are configured in a single OSPF area with the same priority value. No loopback interface has been set on any of the routers. Which secondary value will the routers use to determine the router ID?

All routers in a network are configured in a single OSPF area with the same priority value. No loopback interface has been set on any of the routers. Which secondary value will the routers use to determine the router ID?

• The highest MAC address among the active interfaces of the network will be used.
• There will be no router ID until a loopback interface is configured.
• The highest IP address among the active FastEthernet interfaces that are running OSPF will be used.
• The highest IP address among the active interfaces will be used.

Exam with this question: CCNA Exploration 2: ERouting Final Exam