Which action will bring an error-disabled switch port back to an operational state?

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Which action will bring an error-disabled switch port back to an operational state?

Remove and reconfigure port security on the interface.
Issue the switchport mode access command on the interface.
Clear the MAC address table on the switch.
Issue the shutdown and then no shutdown interface commands.

Explanation: When a violation occurs on a switch port that is configured for port security with the shutdown violation action, it is put into the err-disabled state. It can be brought back up by shutting down the interface and then issuing the no shutdown command.

Which action will bring an error-disabled switch port back to an operational state?

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