CCNA: Cisco Certified Network Associate — Question 12

Which action is taken by switch port enabled for PoE power classification override?

Answer options

• A. If a monitored port exceeds the maximum administrative value for power, the port is shutdown and err-disabled.
• B. When a powered device begins drawing power from a PoE switch port, a syslog message is generated.
• C. As power usage on a PoE switch port is checked, data flow to the connected device is temporarily paused.
• D. If a switch determines that a device is using less than the minimum configured power, it assumes the device has failed and disconnects it.

Correct answer: A

Explanation

The correct answer is A because when a monitored port exceeds the maximum power limit, it is automatically shut down to prevent damage or overload, resulting in an err-disabled state. Option B is incorrect as it describes a logging event rather than a shutdown action. Option C misrepresents the operation by suggesting data flow is paused instead of the port being disabled. Option D incorrectly states the switch's reaction to low power usage, which does not lead to disconnection unless it falls below a critical threshold.