Certified Network Defender (CND) — Question 61

Which of the following layers of the OSI model provides physical addressing?

Answer options

• A. Application layer
• B. Network layer
• C. Physical layer
• D. Data link layer

Correct answer: D

Explanation

The Data link layer is responsible for physical addressing, such as MAC addresses, which are used to identify devices on a local network. The Application layer is focused on end-user services, the Network layer handles logical addressing and routing, while the Physical layer deals with the physical connection and transmission of data, but not addressing.