If a switch port goes into a blocked state only when a superior BPDU is received, what mechanism must be in use?
If a switch port goes into a blocked state only when a superior BPDU is received, what mechanism must be in use?A . STP root guardB . EtherChannel guardC . loop guardD . STP BPDU guardView AnswerAnswer: A Explanation: Root guard allows the device to participate in STP as long...