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fiber-optic cable


natali2007

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In recent years, networks of fiber-optic cable have been replacing electrical wire for

 

 

transmitting telecommunications signals, Signals running through fiber-optic cables

 

 

deteriorate, and wo the signals must be run through a piece of e3quiplent called a

 

 

regenerator before being transmitted father. Light-Line is the leading manufacturer

 

 

of signal regenerators. Therefore, Light-line is one of the companies that will most

 

 

benefit if new long-distance fiber-optic telecommunications networks are constructed.

 

 

 

Which of the following, if true, casts the most doubt on the prediction about light-ling’s

 

 

prospects?

 

 

 

1) Telecommunications signals sent along electrical wires can travel much Farther

 

 

than signals transmitted through fiber-optic before needing to be

 

 

Regenerated.

 

 

2) Expanding its production of regenerators will require Light-line to spend

 

 

Proportionately more on labor and materials.

 

 

3) The volume of signals that a fiber-optic cable can carry is several Thousand times

 

 

greater than the volume that can be carried by an electrical Wire of similar size.

 

 

4) There are technologies that enable telecommunications signals to be transmil

 

 

Without either wire or fiber-optic cable

 

 

5) Several manufacturers are developing regenerator technologies that will allow

To be transmitted many times farther than at present before requiring regeneration

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I feel the answer is A

E seems to be incomplete, C is talking about volume of signals and in a way supports fiber optics capability.

 

Light Line will be successful, if signal regenerators are used. However option A, says that Telecommunication signals over electrical wires can travel more without the use of signal generators, hence this option clearly negates.

 

Please dont get biased towards fiber optics and be judgemental.

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