Cisco 100-105 Exam

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

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 B.
Answer: Option B.
Explanation: 

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

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