Fiber Optic Cable — Questions and answers

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What did Dr. Charles K. Kao imagine information flowing as, instead of electricity?

Choices

  1. Water
  2. Light ✓
  3. Sound waves
  4. Smoke signals

Answer: Light

From page 1

According to George Hockham, what was a big problem with copper wires when trying to carry a lot of information?

Choices

  1. They were too shiny
  2. They got too hot
  3. Signal strength dropped and crosstalk happened ✓
  4. They tasted like pennies

Answer: Signal strength dropped and crosstalk happened

From page 2

What did Charles K. Kao and George Hockham believe was the reason glass lost too much light, instead of the glass material itself?

Choices

  1. It was too heavy
  2. It had too many colors
  3. It had tiny impurities ✓
  4. It was too smooth

Answer: It had tiny impurities

From page 4

What was the special number of decibels per kilometer (dB/km) that Kao and Hockham said glass needed to reach to be useful for long-distance communication?

Choices

  1. Less than 20 dB/km ✓
  2. More than 100 dB/km
  3. Exactly 50 dB/km
  4. Thousands of dB/km

Answer: Less than 20 dB/km

From page 5

What kind of impurities did ordinary glass contain that absorbed light, making it difficult to use for fiber optics?

Choices

  1. Sugar and salt
  2. Iron and copper ions ✓
  3. Plastic and rubber
  4. Wood and paper

Answer: Iron and copper ions

From page 6

What was the name of the company that successfully created the first optical fiber with very low signal loss in 1970?

Choices

  1. Standard Telecommunication Laboratories
  2. AT&T
  3. Corning Glass Works ✓
  4. Bell Labs

Answer: Corning Glass Works

From page 7

What was one big advantage fiber optic cables had over copper wires in the mid-1970s?

Choices

  1. They were cheaper to make
  2. They could carry very little data
  3. They were immune to electromagnetic interference ✓
  4. They melted easily

Answer: They were immune to electromagnetic interference

From page 8

What was the name of the first transatlantic fiber optic cable, laid in 1988?

Choices

  1. Sea-Link 1
  2. AtlanticNet
  3. TAT-8 ✓
  4. OceanConnect

Answer: TAT-8

From page 9

Which of these is NOT mentioned as something fiber optic cables help us do today?

Choices

  1. Stream videos
  2. Drive cars ✓
  3. Use cloud computing
  4. Have telemedicine appointments

Answer: Drive cars

From page 10