单选题Examine the following options，which Spanning Tree Protocol （STP） protection mechanism disables aswitch port if the port receives a Bridge Protocol Data Unit （BPDU）？（）AUplink FastBPort FastCBPDU GuardDRoot Guard
单选题
Examine the following options，which Spanning Tree Protocol （STP） protection mechanism disables aswitch port if the port receives a Bridge Protocol Data Unit （BPDU）？（）
A
Uplink Fast
B
Port Fast
C
BPDU Guard
D
Root Guard
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