Which of the following is required when configuring port security with sticky learning?

Which of the following is required when configuring port security with sticky learning?

• Setting the maximum number of allowed MAC addresses on the interface with the switchport port-security maximum interface subcommand.
• Enabling port security with the switchport port-security interface subcommand.
• Defining the specific allowed MAC addresses using the switchport port-security mac-address interface subcommand.
• All the other answers list required commands.

Explanation: The setting for the maximum number of MAC addresses has a default of 1, so the switchport port-security maximum command does not have to be configured. With sticky learning, you do not need to predefine the specific MAC addresses either.
However, you must enable port security, which requires the switchport port-security interface subcommand.