Refer to the exhibit. Which configuration change ensures that R1 is the active gateway whenever it is in a functional state for the 172.30.110.0/24 network?

Question

Exhibits

Options

• AR1
• BR1
• CR2
• DR2

• A
  84% (51)
• B
  5% (3)
• C
  2% (1)
• D
  10% (6)

Explanation

HSRP Priority Configuration Explanation

Option A is correct because to ensure R1 is always the active HSRP gateway when functional, R1 must be configured with a higher priority value (above the default of 100) and have preemption enabled (standby preempt). Without preemption, R1 would not automatically reclaim the active role after recovering from a failure, even with a higher priority.

Option B (also on R1) is wrong because it likely configures only the higher priority without the preempt command, meaning R1 would not take back the active role after a failure and recovery cycle. Option C is wrong because configuring R2 with a higher priority would make R2 the preferred active gateway, which is the opposite of the goal. Option D is wrong because changes on R2 alone cannot guarantee R1's active status, and raising R2's priority further undermines R1's role.

Memory Tip: Think "Priority + Preempt = Power to Return" - a router needs both a higher priority AND the preempt command to guarantee it becomes (and stays) the active HSRP gateway whenever it's available.

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