Question 970
At Willowbrook Transit, an engineer must explain why indiscriminate BPDU filtering risks a bridging loop. Which action directly meets this requirement?
Explanation
Correct Answer
Suppressing BPDUs can hide redundant links from spanning-tree loop prevention. This is the control that implements the specified requirement.
Incorrect Answers
A voice VLAN allows supported phones to tag voice traffic separately while forwarding the PC's data VLAN. That is not sufficient here: Suppressing BPDUs can hide redundant links from spanning-tree loop prevention.
Layer 1 link up alone does not establish controller discovery and join reachability. That is not sufficient here: Suppressing BPDUs can hide redundant links from spanning-tree loop prevention.
Layer 3 forwarding across VLANs requires an active routed interface for each subnet. That is not sufficient here: Suppressing BPDUs can hide redundant links from spanning-tree loop prevention.