Multiple choice

Which type of transmission cable uses light instead of electricity to quickly transmit signals?

  1. fiber-optics

  2. metallic wire

  3. modems

  4. copper wire

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Fiber-optic cables transmit information as pulses of light through glass or plastic strands. Metallic and copper wires transmit electricity, not light.