Which of the following types of technologies uses fiber optics to deliver Internet service to consumers?

Question

BlackTom AI · Accepted Answer

FiOS is Verizon’s branded service that uses fiber-optic cables to deliver Internet, TV, and phone directly to homes (fiber-to-the-home, FTTH), so FiOS is the correct choice.

1) Relevant knowledge points and concepts
- Fiber optics transmit data as pulses of light through glass or plastic fibers, offering very high bandwidth, low signal loss, and low latency over long distances.  
- “Fiber-to-the-home” (FTTH) or “fiber-to-the-premises” (FTTP) means the optical fiber reaches the customer’s location.  
- Other Internet delivery technologies (cable, satellite, wireless) use different physical media: coaxial copper, radio links to satellites, or radio waves for terrestrial wireless.

2) Step-by-step reasoning
- Identify each option and its delivery medium:
  - FiOS: Verizon’s FTTH service—optical fiber to consumer premises.
  - Cable Internet: typically uses hybrid fiber-coaxial (HFC); fiber runs to neighborhood nodes, then coaxial cable carries the last mile.
  - GEO satellite Internet: uses radio links between ground stations and geostationary satellites (~36,000 km altitude).
  - LEO satellite Internet: uses low-earth orbit satellites (hundreds to a few thousand km) and radio links.
  - Wireless Internet: uses radio frequencies (cellular or fixed wireless) to reach devices.
- Compare: only FiOS explicitly denotes fiber optics all the way to the consumer.

3) Calculations
- No numerical calculations are required here; the reasoning is qualitative based on transmission media.

4) Why the correct answer is correct
- FiOS stands for a fiber-optic based service deployed by Verizon where light in optical fibers carries Internet traffic directly to customers, matching the definition in the question.

5) Why other options are incorrect
- Cable Internet: uses coaxial cable for the last mile (not fiber to the home in typical deployments).  
- GEO satellite Internet: uses geostationary satellites and radio signals, not fiber optics to the consumer.  
- LEO satellite Internet: uses LEO satellites and radio links, not fiber optics to the consumer.  
- Wireless Internet: uses radio waves (cell towers, Wi‑Fi) rather than direct fiber to the customer’s premises.

6) Conclusion
FiOS is the fiber-optic based consumer Internet technology; this matches the provided correct answer: FiOS.

Which of the following types of technologies uses fiber optics to deliver Internet service to consumers? 单项选择题

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