Which feature do you implement so that an interface enters the root inconsistent state if it receives a superior BPDU?

Posted by: Pdfprep Category: 300-115 Tags: , ,

Which feature do you implement so that an interface enters the root inconsistent state if it receives a superior BPDU?
A . DPDU filter
B . Root guard.
C . BPDU guard
D . loop guard

Answer: B

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