CompTIA Network+ (N10-009) — Question 260

In an environment with one router, which of the following will allow a network engineer to communicate between VLANs without purchasing additional hardware?

Answer options

• A. Subinterfaces
• B. VXLAN
• C. Layer 3 switch
• D. VIP

Correct answer: A

Explanation

The correct answer is A, Subinterfaces, because they allow a single physical interface on a router to handle multiple VLANs by creating virtual interfaces for each VLAN. The other options, such as a Layer 3 switch (C), would require additional hardware, while VXLAN (B) and VIP (D) do not directly facilitate inter-VLAN routing on a single router in the same way.