问题：
[单选题]4.要在交换机上运行802.1w，可使用哪个命令来启用该协议?
A.Switch (config) #spanning-tree mode rapid-pvst
B.Switch#spanning-tree mode rapid-pvst
C.Switch(config)#spanning-tree mode 802.1w
D.Switch#spanning-tree mode 802.1w
Tags：计算机Cisco(思科)认证模拟试卷
答案解析：
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