Which Cisco IOS command is used on a Cisco Catalyst 650…

Which Cisco IOS command is used on a Cisco Catalyst 6500 series switch to view the spanning-tree protocol
(STP) information for a virtual LAN (VLAN)?

A.
show spanning tree

B.
show spanning-tree vlan

C.
show spantree

D.
show spantree vlan

Explanation:
The show spanning-tree vlan Cisco IOS command is used on a Catalyst 6500 series switch to view the
spanning-tree information for a VLAN, such as information on the root switch (bridge ID, root path, root cost),
as well as local switch.
The following is sample output of the show spanning-treevlan vlan-id command:

The show spanning tree command is incorrect because it is not the correct syntax of a Cisco IOS command.
The show spantree and show spantree vlan commands are incorrect because these are CatOS commands, not
Cisco IOS commands.
Objective:
LAN Switching Fundamentals
Sub-Objective:
Configure and verify Layer 2 protocols

Cisco > Cisco IOS LAN Switching Command Reference > show spanning-tree