CompTIA Network+ (N10-007) — Question 155

Which of the following OSI layers contains the LLC function?

Answer options

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

Correct answer: B

Explanation

The LLC (Logical Link Control) function is part of the Data Link layer of the OSI model, which is responsible for node-to-node data transfer and error correction. The Network layer (A) deals with routing, the Session layer (C) manages sessions between applications, and the Transport layer (D) provides end-to-end communication, none of which include the LLC function.