Final answer:
Entering the command no switchport access vlan 30 on the Fa0/11 interface will result in the port reverting to the default VLAN, typically VLAN 1. The port will not be shut down, no error message will be shown, and VLAN 30 will not be deleted.
Step-by-step explanation:
If the command no switchport access vlan 30 is entered on the Fa0/11 interface, which is assigned to VLAN 30, the following will happen: Port Fa0/11 will revert to the default VLAN, which is typically VLAN 1. This command removes the VLAN 30 association from the port, resetting it back to its default state.
This does not shut down the port, display an error message, or delete the VLAN itself. The VLAN exists independently of the access ports assigned to it, so removing an access port from a VLAN does not affect the VLAN's existence.
When the command no switchport access vlan 30 is entered on the Fa0/11 interface, the interface is removed from VLAN 30 and returned to the default VLAN, which is VLAN 1. This command is used to remove the access VLAN assignment from the port and its effect is to make the port an IEEE 802.1Q trunk port. The port will now carry traffic for multiple VLANs.