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# In recent years, networks of fiber-optic cable have been

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In recent years, networks of fiber-optic cable have been [#permalink]

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19 Dec 2005, 20:25
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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 so the signals must be run through a piece of equipment 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-lingâ€™s prospects?

A: Telecommunications signals sent along electrical wires can travel much farther than signals transmitted through fiber-optic before needing to be regenerated.

B: Expanding its production of regenerators will require Light-line to spend proportionately more on labor and materials.

C: 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.

D: There are technologies that enable telecommunications signals to be transmitted without either wire or fiber-optic cable.

E: Several manufacturers are developing regenerator technologies that will allow signals to be transmitted many times farther than at present before requiring regeneration.
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Re: CR - Fiber-optic cable [#permalink]

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19 Dec 2005, 21:15
A: Telecommunications signals sent along electrical wires can travel much farther than signals transmitted through fiber-optic before needing to be regenerated. ==> Does not casts doubt on the prediction

B: Expanding its production of regenerators will require Light-line to spend proportionately more on labor and materials. ==> Does not weaken the prediction that Light-Line will benefit the most

C: 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. ==> Out of Scope

D: There are technologies that enable telecommunications signals to be transmitted without either wire or fiber-optic cable. ==> We are talking about fiber-optic cable. Out of scope

E: Several manufacturers are developing regenerator technologies that will allow signals to be transmitted many times farther than at present before requiring regeneration. ==> Correct! It means that Light-Box's services might not even be needed!
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Re: CR - Fiber-optic cable [#permalink]

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19 Dec 2005, 22:10
TeHCM wrote:
A: Telecommunications signals sent along electrical wires can travel much farther than signals transmitted through fiber-optic before needing to be regenerated. ==> Does not casts doubt on the prediction

B: Expanding its production of regenerators will require Light-line to spend proportionately more on labor and materials. ==> Does not weaken the prediction that Light-Line will benefit the most

C: 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. ==> Out of Scope

D: There are technologies that enable telecommunications signals to be transmitted without either wire or fiber-optic cable. ==> We are talking about fiber-optic cable. Out of scope

E: Several manufacturers are developing regenerator technologies that will allow signals to be transmitted many times farther than at present before requiring regeneration. ==> Correct! It means that Light-Box's services might not even be needed!

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20 Dec 2005, 10:32
IMO E is the trap ans . It should be D .

D says that the regenerators may not be required at all.

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20 Dec 2005, 10:42
E.

We have to weaken the conclusion that Light-Line will not benefit and only E does that. D is out of scope according to me.

Last edited by Bhai on 20 Dec 2005, 14:12, edited 1 time in total.

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20 Dec 2005, 11:09
Bhai wrote:
E.

We have to weaken the conclusion that Light-Line will not benefit and onlu E does that. D is out od scope according to me.

Exactly!
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20 Dec 2005, 11:09
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