What command is used to clear all dynamic MAC addresses from the MAC Address Table in a Cisco switch?

The command used to clear all dynamic MAC addresses from the MAC Address Table in a Cisco switch is "clear mac address-table dynamic." This command specifically targets dynamic entries in the table, which are learned MAC addresses that are added automatically through the switch’s normal operation as devices communicate on the network.

When executing this command, the switch removes all dynamically learned MAC addresses, effectively refreshing the MAC Address Table. This can be useful for troubleshooting purposes, such as when network devices have changed their locations, or after a network has undergone significant changes, ensuring that the switch operates with the most current network topology.

The other choices do not correspond to valid commands recognized in Cisco IOS for this purpose. The command "remove mac addresses" is not a recognized command in the context of manipulating the MAC Address Table, and "reset mac address-table" may imply a broader reset that isn't a specific Cisco command. Lastly, "flush mac address-table" is not a valid command in Cisco IOS syntax. Thus, "clear mac address-table dynamic" is the correct and precise command for clearing dynamic entries from the table.