Which command should you enter to configure a single port to discard inferior bpdus 200-125?

spanning-tree portfast bpduguard

Explanation:

spanning - tree protocol (STP) is a layer 2 protocol in the OSI model. It is automatically configured in a switch to prevent continual looping of BPDUs, to avoid traffic congestion. The fastport bpduguard is only applicable in non-trunking access in a switch. It is more secure to configure the fastport mode in switch port connected directly to a node, because there are still bpdus transfer in a switch to switch connection.

BPDUs Guard ensures that inferior bpdus are blocked, allowing STP to shut an access port in this regard.