CompTIA A+ Core 1 (220-1001) — Question 280

Which of the following can be used to extend a wired network using an adapter and electrical outlet?

Answer options

• A. Layer 3 switch
• B. Patch panel
• C. Ethernet over power
• D. Repeater

Correct answer: C

Explanation

The correct answer is C, Ethernet over power, as it allows data transmission over existing electrical wiring, effectively extending the network. Options A and B, a Layer 3 switch and a patch panel, serve different functions in networking and do not utilize electrical outlets for extension. Option D, a repeater, amplifies signals but does not utilize electrical wiring for network expansion.