Which of the following descriptions about VRRP is incorrect?

Question

Options

• AWhen two routers with the same priority compete for Master at the same time, the one with the larger interface address is preferred as Master.
• BBy default, if a Master already exists, for the sake of network stability, the Backup with a higher priority will not preempt.
• CAfter the Master has failed, in non-preemption mode, as long as the Master router does not fail, the Backup router will not become the Master router even if it is subsequently configured with a higher priority.
• DPreemption priority determines the status of each router in the virtual router based on priority.

• A
  6% (2)
• B
  86% (30)
• C
  3% (1)
• D
  6% (2)

Explanation

Option B is incorrect because VRRP enables preemption by default, meaning a Backup router with a higher priority will preempt the existing Master - the protocol is designed to ensure the highest-priority router always holds the Master role under normal conditions. The statement inverts the default behavior, falsely implying non-preemption is the default for stability reasons.

Option A is correct: when two routers tie on priority during a simultaneous Master election, VRRP uses the interface IP address as a tiebreaker, with the higher address winning. Option C is correct: in non-preemption mode, a running Master will not be displaced by a Backup even if that Backup is later assigned a higher priority - the Master only loses its role if it actually fails. Option D is correct: priority is precisely the mechanism VRRP uses to determine which router assumes the Master role within a virtual router group.

Memory tip: Think of VRRP default behavior as "highest priority always in charge" - preemption is on by default so the best router leads. Non-preemption is an explicit configuration to suppress that behavior, not the default.

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