When does a stack master lose its role?

Question

Options

• AWhen the priority value of a stack member is changed to a higher value
• Bwhen a switch with a higher priority is added to the stack
• Cwhen the stack master is reset
• Dwhen a stack member fails

• A
  2% (1)
• B
  3% (2)
• C
  93% (54)
• D
  2% (1)

Explanation

Stack Master Role Explanation

Option C is correct because resetting the stack master forces it to reload its operating system, during which it temporarily loses its master role - the stack then holds a new master election among the remaining members, and the reset switch may or may not reclaim the role upon rejoining.

Why the distractors are wrong:

• Option A is incorrect because changing a member's priority to a higher value does not trigger an immediate re-election; the change only takes effect after the next stack reset or reload.
• Option B is incorrect for the same reason - adding a higher-priority switch to an existing stack does not automatically preempt the current master; Cisco stacking does not support preemption by default.
• Option D is incorrect because a member failing has no impact on the master's role; the master continues operating, and only the failed member is removed from the stack topology.

Memory Tip: Think of the stack master like a president - a new, more popular candidate joining the race (higher priority) doesn't automatically remove the current president. Only a forced "reboot" (reset) of the president themselves triggers a new election.

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