Huawei Certified Network Associate – Routing and Switching (HCNA-RS, legacy) — Question 110

What is the total length of the port ID in STP?

Answer options

• A. 4 bits
• B. 8 bits
• C. 2 bits
• D. 16 bits

Correct answer: D

Explanation

The correct answer is D, as the port ID in STP is 16 bits long. Options A, B, and C are incorrect because they do not accurately represent the size of the port ID in the context of the Spanning Tree Protocol.