【单选题】After enabling port security on a Cisco Catalyst switch, what is the default action when the configuredmaximum of allowed MAC addresses value is exceeded?()
A.
The port’s violation mode is set to restrict
B.
The port is shut down
C.
The MAC address table is cleared and the new MAC address is entered into the table
D.
The port remains enabled, but bandwidth is throttled until old MAC addresses are aged out