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单选题
哪个命令可以在交换机启用RSTP？ （）
A
spanning-tree mode rapid-pvst
B
spanning-tree uplinkfast
C
spanning-tree backbonefast
D
spanning-tree mode mst
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考题
单选题Which of the following commands can be issued without interfering with the operation of loop guard？（）A
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考题
单选题要将交换机100M端口的路径成本设置为25，以下哪个命令是正确的？（）A
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考题
单选题Which configuration is used to enable root guard？（）A
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interface gig3/1 spanning-tree root guardC
interface gig3/1 spanning-tree root-guardD
interface gig3/1 spanning-tree root-guard default
考题
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Switch（config）#spanning-tree loopguard defaultB
Switch（config-if）#spanning-tree bdpufilterC
Switch（config）#udld aggressiveD
Switch（config-if）#spanning-tree bpduguard
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