Multiple choice

Which medium of transmission is used in SONET?

  1. Laser beam

  2. Fiber optics

  3. Coaxial cable

  4. Radio transmission

  5. LED
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Synchronous Optical Networking (SONET) is a standardised protocol that transfers multiple digital bit streams over optical fiber using lasers or highly coherent light from light-emitting diodes (LEDs).

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