Multiple choice

Refer to the exhibit. Routers A, B, C, and D are all running OSPF with default router IDs and OSPF interface priorities. Loopback interfaces are not configured and all interfaces are operational. Router D is the DR and router C is the BDR. What happens immediately after the given commands are entered on router A?

  1. A(config)# interface fa0/0

  2. A(config-if)# ip ospf priority 255

  3. D will remain the DR. C will remain the BDR.

  4. A will become the DR. D will become the BDR.

  5. A will become the DR. C will remain the BDR.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

When Router A's interface priority is set to 255, it becomes ineligible to participate in DR/BDR election regardless of other configurations. The existing DR (Router D) and BDR (Router C) will remain unchanged. This is a priority change, not an election question - the 255 value specifically removes the router from contention.

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