单选题At which layer of the OSI model does the Spanning Tree Protocol (STP) operate at?()ALayer 5BLayer 4CLayer 3DLayer 2ELayer 1

单选题
At which layer of the OSI model does the Spanning Tree Protocol (STP) operate at?()
A

Layer 5

B

Layer 4

C

Layer 3

D

Layer 2

E

Layer 1


参考解析

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