CompTIA A+ Core 1 (220-1101) — Question 278

A new VoIP solution is being implemented at a corporate office for more than 200 users. The new VoIP devices do not require AC adapters at the users' desks. Which of the following network devices should a technician purchase?

Answer options

• A. Firewall
• B. Power injector
• C. PoE switch
• D. Router

Correct answer: C

Explanation

The correct answer is C, PoE switch, because it can provide Power over Ethernet to the VoIP devices, eliminating the need for separate AC adapters. Options A (Firewall) and D (Router) do not supply power to devices, while option B (Power injector) is less efficient than using a PoE switch for multiple devices.