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单选题
What value is primarily used to determine which port becomes the root port on each nonroot switch in a spanning-tree topology？（）
A
lowest port MAC address
B
port priority number and MAC address
C
VTP revision number
D
highest port priority number
E
path cost
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考题
单选题What value is primarily used to determine which port becomes the root port on each non root switch in a spanning-tree topology?（）A
path costB
lowest port MAC addressC
VTP revision numberD
highest port priority numberE
port priority number and MAC address
考题
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lowest port MAC addressB
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highest port priority number.E
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lowest port MAC addressB
port priority number and MAC address.C
VTP revision numberD
highest port priority number.E
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考题
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