Which of the following is not a role of a stack switch?

Question

Options

• AMaster
• BBackup
• CStandby
• DSlave

• A
  13% (5)
• B
  10% (4)
• C
  73% (29)
• D
  5% (2)

Explanation

Standby is not a recognized role in stack switch architecture. In a traditional switch stack, the three valid roles are Master (A), Backup (B), and Slave (D) - each serving a distinct purpose in the stacking hierarchy.

• Master (A) is a real role - it is the primary switch that manages and controls the entire stack, handling forwarding decisions and configuration for all member switches.
• Backup (B) is a real role - it is the secondary switch that monitors the Master and takes over stack management immediately if the Master fails.
• Slave (D) is a real role - these are the remaining member switches in the stack that are managed by the Master and simply forward traffic as directed.

Standby (C) is the odd one out because it belongs to a different technology - it is associated with router redundancy protocols like HSRP (Hot Standby Router Protocol), not switch stacking roles.

Memory tip: Remember the three stack roles with the acronym "MBS" - Master, Backup, Slave. If you see "Standby" in a stacking question, recognize it as the HSRP impostor - it sounds like it belongs but doesn't.

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