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 . loop guard
C . STP Root guard
D . EtherChannel guard
Answer: A
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 . loop guard
C . STP Root guard
D . EtherChannel guard
Answer: A