CompTIA Network+ (N10-008) — Question 756

Which of the following devices allows local, high-speed Ethernet traffic to be transmitted over twisted-pair telephone lines for WAN connectivity?

Answer options

• A. Media converter
• B. WLAN controller
• C. Repeater
• D. DSL modem

Correct answer: D

Explanation

The correct answer is D, the DSL modem, which is specifically designed to transmit high-speed Ethernet signals over standard telephone lines. The other options do not facilitate this type of communication; a media converter is used for different media types, a WLAN controller manages wireless networks, and a repeater amplifies signals but does not provide WAN connectivity.