If a switch receives a superior BPDU and goes directly into a blocked state, what mechanism must be in use?
A. BPDU guard
B. portfast
C. EherCahannel guard
D. loop guard
Answer:A
If a switch receives a superior BPDU and goes directly into a blocked state, what mechanism must be in use?
A. BPDU guard B. portfast C. EherCahannel guard D. loop guard