To obtain an overview of the spanning tree status of a switched network, a network engineer issues the show spanning-tree command on a switch. Which two items of information will this command display? (Choose two.)
- The role of the ports in all VLANs.
- The root bridge BID.
- The number of broadcasts received on each root port.
- The IP address of the management VLAN interface.
- The status of native VLAN ports.
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Answers Explanation & Hints: The show spanning-tree command displays the following two items of information:
- The root bridge BID: This information shows the BID (Bridge ID) of the root bridge in the spanning tree topology. The root bridge is the bridge with the lowest BID value, and it is responsible for sending the configuration BPDUs (Bridge Protocol Data Units) that propagate through the network to create the loop-free topology.
- The role of the ports in all VLANs: This information shows the status of each switch port in the spanning tree topology, including the role of the port (root, designated, or blocked), the priority of the port, the cost of the path to the root bridge, and the port ID.
Therefore, options A and B are correct: the role of the ports in all VLANs, and the root bridge BID, are the two items of information that will be displayed by the show spanning-tree command.