Which statement about the Cisco APIC APIC cluster in minority state is true?

Question

Options

• APolicy/Config changes are possible each cluster member in leader state.
• BPolicy/Config changes are possible on cluster leader APIC1.
• CPolicy/Config changes are not possible on any cluster member.
• DPolicy/Config changes are possible on any cluster member.

• A
  82% (54)
• B
  11% (7)
• C
  3% (2)
• D
  5% (3)

Explanation

There appears to be an error in the provided answer key. Based on Cisco ACI documentation, C is the correct answer, not A.

Why C is correct: When an APIC cluster enters minority state (quorum is lost - fewer than half the cluster members are reachable), the cluster enters a read-only protection mode. Policy and configuration changes are not possible on any cluster member. This is a deliberate design to prevent split-brain scenarios where two isolated groups of APICs could apply conflicting configurations.

Why the distractors are wrong:

• A is misleading - there is no concept of individual cluster members having an independent "leader state" that grants them config permissions during minority; quorum is a cluster-wide requirement.
• B is wrong - APIC1 holds no special override authority in minority state; quorum rules apply regardless of which node was originally the cluster leader.
• D is wrong - config changes on any member are blocked when quorum is lost, not permitted across all members.

Memory tip: Think of minority state like a split vote in a committee - if you don't have a majority present, no binding decisions (config changes) can be made. Read-only = safe; writes require quorum.

Note for exam takers: Flag this question if it appears on a practice test with "A" as the correct answer - it contradicts Cisco's documented APIC cluster behavior. The Cisco APIC Installation, Upgrade, and Maintenance Guide clearly states configuration changes are blocked in minority state.

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