Which command would you use to disable UDLD on a specific interface?

To disable UDLD (Unidirectional Link Detection) on a specific interface, the command "udld port disable" is appropriate because it directly instructs the switch to modify the behavior of UDLD on that interface, specifically disabling it.

When the command is executed on a specific interface, it overrides the global UDLD settings for that interface only. This is essential in scenarios where UDLD is enabled across the device but needs to be turned off for particular connections that may not require this functionality due to specific network configurations or device characteristics.

The structured command syntax reflects Cisco's CLI conventions, where specifying "port" indicates that the action is focused on an interface rather than a global setting. This method provides flexibility in managing UDLD behavior on a per-interface basis within the switch configuration.

In contrast, the other choices do not conform to the correct command syntax or do not specify the action appropriately for the context of disabling UDLD specifically on an interface.