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
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