CompTIA Network+ (N10-007) — Question 498

A technician must install and configure a network device in a building with 20 classrooms. Each room must be on a separate subnet and should not be able to see traffic from other subnets. Which of the following is the MOST cost-effective solution?

Answer options

• A. A switch with VLANs created for each segment
• B. A router with interfaces connected to a switch in each room
• C. A VoIP endpoint connected to a hub for each network
• D. A firewall with DHCP pools for each subnet

Correct answer: A

Explanation

The correct answer is A, as using a switch with VLANs allows for the segmentation of the network into different subnets while remaining cost-effective. Options B and D involve more complex and expensive setups than necessary, and option C does not provide the required subnet isolation.