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Refer to the exhibit. The command show spanning-tree vlan 10 was issued on Switch SW1. Which three statements are true about its output? (Choose two)
The ports will be in blocking, listening, learning, forwarding or disabled state.
The default priority value for spanning tree is higher than the configured Bridge ID priority.
The interfaces shown are participating in the same broadcast domain.
All ports on this switch are in forwarding state.
This bridge is the root for VLAN 30 and all others.
The output of the command show spanning-tree vlan 10 displays a summary of information of the STP instance only for VLAN 10, which is a single broadcast domain. This switch is the root bridge for VLAN 10, but we dont know (from the results of the command) if it is the root bridge for all VLANs. The port state of the Rapid STP (rstp/802.1w) are Discarding, Disabled, Blocking, Learning and Forwarding. Any port on this VLAN will be in either, discarding, learning, disabled, or forwarding. In this case the priority configured for this bridge is lower than the default; therefore this is the root bridge. In the lower part of the command results it is possible to see that the role state for the three interfaces are in Designated Forwarding. For more information refer to: [https://cciethebeginning.wordpress.com/2008/11/20/differences-between-stp-and-rstp/] and Cisco technology white paper, "Understanding Rapid Spanning Tree Protocol (802.1w)", http://www.cisco.com/c/en/us/support/docs/lan-switching/spanning-tree-protocol/24062-146.html#topic5
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