By default, how many MAC addresses are permitted to be learned on a switch port with port-security enabled?
If the destination MAC address is unknown, the frame is flooded to every port that is configured in the same VLAN except on the port that it was received on.
Unicast Frame Forwarding
At which layer of the OSI model does the protocol that provides the information that is displayed by the show cdp neighbors command operate?
What is a proprietary Data Link Layer protocol developed by Cisco Systems? It is used to share information about other directly connected Cisco equipment, such as the operating system version and IP address.