220-1101 · Question #821
Which of the following allows for a beam of light to transmit data through a flexible cable?
The correct answer is D. Single-mode fiber. Fiber optic cables-including single-mode fiber-transmit data as pulses of light through a thin strand of glass or plastic. The cable is flexible yet guides light via total internal reflection. Single-mode fiber uses a very narrow core and a single light path (mode), allowing sign
Question
Which of the following allows for a beam of light to transmit data through a flexible cable?
Options
- ACoaxial
- BHDMI
- CThunderbolt
- DSingle-mode fiber
How the community answered
(29 responses)- A3% (1)
- C3% (1)
- D93% (27)
Explanation
Fiber optic cables-including single-mode fiber-transmit data as pulses of light through a thin strand of glass or plastic. The cable is flexible yet guides light via total internal reflection. Single-mode fiber uses a very narrow core and a single light path (mode), allowing signals to travel extremely long distances with minimal signal loss. Coaxial cable uses a copper conductor and transmits electrical signals, not light. HDMI is a digital audio/video interface that carries electrical signals over copper conductors. Thunderbolt is a high-speed interface that uses electrical signals over copper (or optical in some versions), but it is an interface standard, not a cable type defined by light transmission.
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