When running OSPF, what would cause router A not to form an adjacency with router B?

Refer to the exhibit.

When running OSPF, what would cause router A not to form an adjacency with router B?
A . The loopback addresses are on different subnets.
B . The values of the dead timers on the routers are different.
C . Route summarization is enabled on both routers.
D . The process identifier on router A is different than the process identifier on router

View Answer

Answer: B

Explanation:

To form an adjacency (become neighbor), router A & B must have the same Hello interval, Dead interval and AREA numbers