Which commands are used to re-enable a port that has been disabled as a result of a port security violation?

• shutdown
  no shutdown
• shutdown
  no switchport port-security
• shutdown
  no switchport port-security violation shutdown
• shutdown
  no switchport port-security maximum

Explanation: When a switch security violation occurs, by default the port enters in the error-disable state and the port does not become active again automatically if the condition that triggered the violation disappears.

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