Final answer:
To ensure that incoming traffic to a switch port is tagged with the PVID assigned to the port, you need to configure the port as an access port and assign the PVID to it. This can be done using the switch's command-line interface (CLI).
Step-by-step explanation:
To ensure that incoming traffic to a switch port is tagged with the PVID assigned to the port, you need to configure the port as an access port and assign the PVID to it. An access port is a switch port that is connected to an end device, such as a client computer, and carries traffic for a single VLAN.
To configure the port as an access port and assign the PVID, you can use the following command:
Enter the switch's command-line interface (CLI).
Locate the port you want to configure.
Issue the command 'switchport mode access' to change the port to an access port.
Issue the command 'switchport access vlan [PVID]' to assign the PVID to the port.
Save the configuration.