ICND1: Interconnecting Cisco Networking Devices Part 1 (CCENT, legacy) — Question 57

On which OSI layer does a VLAN operate?

Answer options

• A. Layer 1
• B. Layer 2
• C. Layer 3
• D. Layer 4

Correct answer: B

Explanation

A VLAN operates at Layer 2, the Data Link layer, where it manages traffic between devices on the same local network. Options A, C, and D are incorrect as Layer 1 deals with physical connections, Layer 3 handles network routing, and Layer 4 involves transport protocols.