Given the output for this command, if the router ID has not been manually set, what router ID will OSPF use for this router?

Refer to the exhibit.

Given the output for this command, if the router ID has not been manually set, what router ID will OSPF use for this router?
A . 10.1.1.2
B . 10.154.154.1
C . 172.16.5.1
D . 192.168.5.3

View Answer

Answer: C

Explanation:

CCNA Tutorial: The OSPF Router ID (RID)

http://www.thebryantadvantage.com/CCNACertificationExamTutorialOSPFRouterIDRID.htm

When determining the Router ID (RID) of an OSPF-enabled router, OSPF will always use the numerically highest IP address on the router’s loopback interfaces, regardless of whether that loopback is OSPF-enabled.

What if there is no loopback? OSPF will then use the numerically highest IP address of the physical interfaces, regardless of whether that interface is OSPF-enabled.