Huawei Certified ICT Associate – Data Center Network (HCIA-DCN) — Question 37

Which of the following statements is true?

Answer options

• A. Switches work at the network layer.
• B. Routers work at the network layer.
• C. Switches work at the physical layer.
• D. Routers work at the physical layer.

Correct answer: B

Explanation

The correct answer is B because routers are specifically designed to operate at the network layer, managing traffic between different networks. Option A is incorrect as switches operate primarily at the data link layer, while options C and D misrepresent the functions of switches and routers, respectively, since switches do not work at the physical layer and routers do not operate at that layer either.