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Refer to the exhibit. The network administrator uses the command "show spanning-tree vlan 20" for troubleshooting an STP problem. Which is true about the outcome of the command? (Choose two)
The BPDUs will be sent every 2 seconds.
The BPDUs are being sent every 10 seconds.
The time spent for the listening state is 15 seconds.
The time spent in the learning state is 20 seconds.
The switch is the root bridge for VLAN20.
The learning state period is sent by the Root Bridge. So the forward delay (15 sec) should be considered as the learning state or listening state. The BPDU timer (Hello Time) is configured to every 2 seconds for the Local Bridge (Inherited from the Root Bridge). The local switch is not the Root Bridge of VLAN 20 as seen in the command result. The max age is 20 seconds which is the maximum time to wait for a hello (BPDU) to be received before considering the port dead. For more information refer to: ww.cisco.com/c/en/us/support/docs/lan-switching/spanning-tree-protocol/10556-16.html
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