Which STP feature can prevent an attacker from becoming the root bridge by immediately shutting down the interface when it receives a BPDU?

Posted by: Pdfprep Category: 210-260 Tags: , ,

Which STP feature can prevent an attacker from becoming the root bridge by immediately shutting down the interface when it receives a BPDU?
A . BPDU filtering
B . root guard
C . BPDU guard
D . portFast

Answer: C

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