Cisco Certified Network Professional Practice Test 2026 – Your All-in-One Guide to Exam Success!

The command used to clear port security on a Cisco switch is designed to remove all port security settings that have been applied, including both static and dynamic configurations. By using this command, you effectively reset any restrictions or configurations that have been defined by the port security feature, allowing for a fresh start.

This command is particularly useful in scenarios where a network administrator wants to reconfigure port security or troubleshoot issues without being hindered by existing settings. It streamlines the process of managing port security by eliminating the need to clear specific settings one at a time.

The other options, while they may suggest an action related to port security, do not encompass the full scope of clearing all configurations as effectively as the correct choice. Each of those commands targets specific types of port security configurations, such as only dynamic or sticky addresses, rather than providing a comprehensive reset of all port security features on the switch.