CompTIA Network+ (N10-008) — Question 385

At which of the following OSI model layers does a MAC filter list for a wireless infrastructure operate?

Answer options

• A. Physical
• B. Network
• C. Session
• D. Data link

Correct answer: D

Explanation

The correct answer is D, Data link, as MAC filtering is a function that operates at this layer to control access to the network based on MAC addresses. Options A, B, and C are incorrect because the Physical layer deals with hardware transmission, the Network layer is responsible for routing, and the Session layer manages sessions between applications, none of which handle MAC addresses.