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In recent years, networks of fiber-optic cable have been
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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-ling’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: In recent years, networks of fiber-optic cable have been
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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!
Re: In recent years, networks of fiber-optic cable have been
[#permalink]
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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Re: In recent years, networks of fiber-optic cable have been [#permalink]