An engineer is asked to protect unused ports that are configured in the default VLAN on a switch. Which two steps will fulfill the request? (Choose two.)

An engineer is asked to protect unused ports that are configured in the default VLAN on a switch. Which two steps will fulfill the request? (Choose two.)

A. Configure the ports as trunk ports. B. Enable the Cisco Discovery Protocol. C. Configure the port type as access and place in VLAN 99. D. Administratively shut down the ports. E. Configure the ports in an EtherChannel.