What is one difference between BPDU protection and root guard?
What is one difference between BPDU protection and root guard?
BPDU protection immediately blocks a port upon receiving any BPDU to protect against potential loops on edge ports, which are not expected to receive BPDUs. Root guard, on the other hand, only blocks a port if it receives a BPDU that suggests a better root path to ensure that the designed root bridge remains the root bridge.
The solution is B because BPDU protection blocks a port, when a BPDU is received. With root guard the port will be only blocked when a superior BPDU is received.