200-301 Question 226
Single answerYou are configuring a network using Spanning Tree Protocol (STP). On a critical port connecting to an end-user device, you want to ensure no Bridge Protocol Data Units (BPDUs) are received to prevent accidental topology changes. Which feature should you apply to this port?
- A
Root Guard
- B
Loop Guard
- C
BPDU Filter
- D
BPDU Guard
Show answer and explanation
Correct answer: C
Explanation
To ensure no BPDUs are received on a port connected to an end-user device, BPDU Filter is the correct choice. This feature prevents the port from sending or receiving BPDUs, effectively eliminating the possibility of accidental topology changes caused by end devices.
- A. Incorrect.
Root Guard is used to prevent a designated port from becoming a root port, but it does not block BPDUs from being sent or received.
- B. Incorrect.
Loop Guard prevents loops by disabling a port if BPDUs stop being received, but it does not filter BPDUs.
- C. Correct.
BPDU Filter is specifically designed to block the sending or receiving of BPDUs on a port, which is the desired behavior in this scenario.
- D. Incorrect.
BPDU Guard disables a port if it receives a BPDU, but it does not prevent the port from receiving BPDUs.