Huawei Certified ICT Associate – Data Center Network (HCIA-DCN) — Question 187

When two switches are connected through link aggregation, what are the requirements for the interfaces on the two switches? (Choose all that apply.)

Answer options

• A. The physical interface rates of the interconnected switches are the same.
• B. The physical interface IDs of the interconnected switches are the same.
• C. The duplex modes of the physical interfaces on the interconnected switches are the same.
• D. The physical interface quantities of the interconnected switches are the same.
• E. The models of the optical modules used by the interconnected switches are the same.

Correct answer: A, C, D

Explanation

For link aggregation to function correctly, the physical interface rates must match (A), as well as the duplex modes (C) and the number of interfaces (D). The interface IDs and optical module models do not need to match for link aggregation to be established.