Fiber Optic Network — Questions and answers
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Who proposed that optical fibers made from pure glass could carry telephone messages over long distances?
Choices
- Dr. Charles K. Kao ✓
- George Hockham
- Alexander Graham Bell
- Lord Kelvin
Answer: Dr. Charles K. Kao
From page 1
Why didn't Alexander Graham Bell's 'Photophone' work well for long distances?
Choices
- Weather conditions like fog and rain blocked the light. ✓
- The light was not bright enough.
- It only worked at night.
- People preferred talking on the phone.
Answer: Weather conditions like fog and rain blocked the light.
From page 3
According to Dr. Kao and George Hockham, what was the main reason light lost its strength in glass?
Choices
- Impurities in the glass ✓
- The color of the glass
- Too many light beams
- The age of the glass
Answer: Impurities in the glass
From page 4
What are the two main parts of an optical fiber?
Choices
- A core and a cladding ✓
- A battery and a wire
- A screen and a button
- A lightbulb and a switch
Answer: A core and a cladding
From page 6
What is a 'preform' when making fiber optic cables?
Choices
- A large glass rod that is pulled into a fiber ✓
- A special oven that heats the glass
- A tool that coats the fiber
- A machine that polishes the glass
Answer: A large glass rod that is pulled into a fiber
From page 7
Where and when was the first commercial fiber optic link installed?
Choices
- In 1977 by AT&T in Chicago ✓
- In 1966 in England
- In 1988 under the ocean
- In 2000 in your home
Answer: In 1977 by AT&T in Chicago
From page 8
What was the name of the first transatlantic fiber optic cable laid in 1988?
Choices
- TAT-8 ✓
- GlobalNet-1
- OceanConnect
- DeepSeaLink
Answer: TAT-8
From page 9
Which of these is a way fiber optics is used today?
Choices
- For home internet and medical endoscopes ✓
- For cooking dinner and doing laundry
- For building houses and roads
- For planting trees and growing food
Answer: For home internet and medical endoscopes
From page 10