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If a switch port goes directly into a blocked state only when a superior BPDU is received, what mechanism must be in use?

Posted by: Pdfprep Category: 300-206 Tags: , , Post Date: January 10, 2021

If a switch port goes directly into a blocked state only when a superior BPDU is received, what mechanism must be in use?
A . STP bpdu guard
B . STP root guard
C . SPT bpdu filter

Answer: B

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