單項選擇題

Refer to the exhibit. Based on the output of the show spanning-tree command，
which statement is true？（）

A.Switch SW1 has been configured with the spanning-tree vlan 1 root primary global configuration command.
B.Switch SW1 has been configured with the spanning-tree vlan 1 root secondary global configuration command.
C.Switch SW1 has been configured with the spanning-tree vlan 1 priority 24577 global configuration command.
D.Switch SW1 has been configured with the spanning-tree vlan 1 hello-time 2 global configuration command.
E.The root bridge has been configured with the spanning-tree vlan 1 root secondary global configuration command.

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單項選擇題

Refer to the exhibit. On the basis of the output of the show spanning-tree inconsistentports command，
which statement about interfaces FastEthernet 0/1 and FastEthernet 0/2 is true？（）

A.They have been configured with the spanning-tree bpdufilter disable command.
B.They have been configured with the spanning-tree bpdufilter enable command.
C.They have been configured with the spanning-tree bpduguard disable command.
D.They have been configured with the spanning-tree bpduguard enable command.
E.They have been configured with the spanning-tree guard loop command.
F.They have been configured with the spanning-tree guard root command.

單項選擇題

Refer to the exhibit. STP has been implemented in the network. Switch SW_A is the root switch for the default VLAN. To reduce the broadcast domain， the network administrator decides to split users on the network into VLAN 2 and VLAN 10. The administrator issues the command spanning-tree vlan 2 root primary on switch SW_A.
What will happen as a result of this change？（）

A.All ports of the root switch SW_A will remain in forwarding mode throughout the reconvergence of the spanning tree domain.
B.Switch SW_A will change its spanning tree priority to become root for VLAN 2 only.
C.Switch SW_A will remain root for the default VLAN and will become root for VLAN 2.
D.No other switch in the network will be able to become root as long as switch SW_A is up and running.

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Refer to the exhibit. Based on the output of the show spanning-tree command， which statement is true？ （）

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Refer to the exhibit. On the basis of the output of the show spanning-tree inconsistentports command， which statement about interfaces FastEthernet 0/1 and FastEthernet 0/2 is true？（）

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Refer to the exhibit. Based on the output of the show spanning-tree command，
which statement is true？（）

Refer to the exhibit. On the basis of the output of the show spanning-tree inconsistentports command，
which statement about interfaces FastEthernet 0/1 and FastEthernet 0/2 is true？（）