The show port-security interface f0/1 command lists a port status of secure-down. Which one of the following answers must be true about this interface at this time?

The show port-security interface f0/1 command lists a port status of secure-down. Which one of the following answers must be true about this interface at this time?

• The show interface status command lists the interface status as connected.
• The show interface status command lists the interface status as err-disabled.
• The show port-security interface command could list a mode of shutdown or restrict, but not protect.
• The show port-security interface command could list a violation counter value of 10.

Explanation: The question states that the port security status is secure-shutdown. This state is used only by the shutdown port security mode, and when used, it means that the interface has been placed into an err-disabled state. Those facts explain why the correct answer is correct and two of the incorrect answers are incorrect.
The incorrect answer that mentions the violation counter is incorrect because in shutdown mode, the counter no longer increments once the interface is placed into secureshutdown mode, and it resets to 0 once the interface is reset with the shutdown and then no shutdown commands.