Cisco Certified Network Associate (CCNA) Practice Exam

What does the port security violation shutdown command do?

1. Enables the port again automatically

2. Administratively shuts down the port

3. Protects the port from any connection

4. Restricts the number of MAC addresses

The correct answer is: Administratively shuts down the port

The port security violation shutdown command is designed to enhance network security by taking a specific action when a port security violation occurs. When the configured maximum number of MAC addresses is exceeded or an unauthorized MAC address attempts to access the network through that port, this command will administratively shut down the port. This shutdown action is a protective measure that prevents potentially malicious devices from connecting to the network and helps to maintain the integrity of the network resources. Once the port is shut down, it will not process any further traffic until it is manually enabled again, thus providing an immediate response to secures risks. Other options are not aligned with the function of this command. For example, the command does not automatically enable the port again; that action requires manual intervention. Additionally, while the command contributes to securing the port, it does not inherently provide ongoing protection against any connection nor does it specifically restrict the number of MAC addresses without the violation being enforced. The primary role of the command is to take the drastic measure of shutting down the port in response to security violations.