Which Cisco IOS command is used on a trunking interface to disable VLAN 20 from being sent across the trunk?
A) switchport vlan remove 20
B) switchport trunk allowed vlan remove 20
C) switchport trunk remove 20
D) switchport vlan trunk remove 20
B
Explanation: B) The Cisco IOS command switchport trunk allowed vlan provides the capability to add and remove specific VLANs that are not supported over a specific trunk. Operations include allow, all, except, none, and remove.
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