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Exam CDCP-001 topic 1 question 3 discussion

Actual exam question from GAQM's CDCP-001
Question #: 3
Topic #: 1
[All CDCP-001 Questions]

Which source is used in fiber cable to transmit data?

  • A. Signals
  • B. Electric
  • C. Light
  • D. Pulse
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Suggested Answer: C 🗳️
by kabeercs at Sept. 3, 2025, 2:02 p.m.

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kabeercs
2 months, 3 weeks ago
Selected Answer: C
In fiber optic cables, the source used to transmit data is light. 🔦 Light Sources in Fiber Optics: LED (Light Emitting Diode) Used in short-distance, multimode fiber. Cheaper, less power, but lower speed and distance. Laser Diode (e.g., VCSEL – Vertical Cavity Surface Emitting Laser) Used in long-distance, single-mode fiber. High power, high speed, and long reach.
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