Huawei Certified Network Associate – Routing and Switching (HCNA-RS, legacy) — Question 109

Which of the following descriptions about STP designated ports is correct?

Answer options

• A. Designated ports forward frames destined for the root switch.
• B. Designated ports represent the path leading to the root switch.
• C. Each bridge can have only one designated port.
• D. Designated ports are responsible for sending BPDU to connected network segments.

Correct answer: D

Explanation

The correct answer is D because designated ports are indeed responsible for transmitting BPDUs to connected segments to maintain the Spanning Tree Protocol. Option A is incorrect as designated ports forward frames not just to the root switch but to any destination. Option B is misleading as it suggests designated ports only represent a single path rather than their role in forwarding. Option C is false since a bridge can have multiple designated ports, one for each segment it connects.