CompTIA A+ Core 1 (220-1201) — Question 100

Which of the following allows for a beam of light to transmit data through a flexible cable?

Answer options

• A. Coaxial
• B. HDMI
• C. Thunderbolt
• D. Single-mode fiber

Correct answer: D

Explanation

Single-mode fiber is designed specifically to transmit data using light, making it the correct choice. Coaxial, HDMI, and Thunderbolt cables do not utilize light for data transmission; instead, they rely on electrical signals or other methods, which makes them unsuitable for this purpose.