2. 计算机
  3. What value is primarily used to determine which port becomes the root port on each nonroot switch in a spanning-tree topology?

What value is primarily used to determine which port becomes the root port on each nonroot switch in a spanning-tree topology?

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问题 What value is primarily used to determine which port becomes the root port on each nonroot switch in a spanning-tree topology?
选项 A、        lowest port MAC address
B、        port priority number and MAC address．
C、        VTP revision number
D、        highest port priority number．
E、        path cost
答案E
解析 此处为选举跟端口，先要比较到跟桥的cost。如果是选跟桥，先比较优先级
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