CompTIA Network+ (N10-007) — Question 633

Which of the following needs to be configured on a Layer 2 interface to allow multiple VLANs to pass through?

Answer options

• A. QoS
• B. Tagging
• C. Port aggregation
• D. Port mirroring

Correct answer: B

Explanation

The correct answer is B, as VLAN tagging is essential for identifying which VLAN a frame belongs to when multiple VLANs traverse a single interface. The other options, such as QoS, Port aggregation, and Port mirroring, do not specifically facilitate the passage of multiple VLANs on a Layer 2 interface.