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- jamiejames
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Atticus Finch
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Q1 - although fiber-optic telephone cable is more expensive
Can someone explain why C is wrong? I didn't choose E because it seemed like it was just restating a premise/conclusion.
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- timmydoeslsat
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Atticus Finch
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Re: Q1 - although fiber-optic telephone cable is more expensive
This is a most strongly supported question stem.
This stimulus is really not difficult, it just has a lot of information.
We are told that although the costs of manufacturing the fiber optic cable is more expensive than manufacturing the copper cable, the copper cable network is more expensive overall.
We are then given information as to why it is the case that copper cable network is more expensive overall.
We are told that copper cable requires frequent amplicfication, whereas the fiber optic do not.
Answer choices:
A) Cannot infer if it is the material. Could be the process used to make it into a telephone cable. Perhaps the materials are actually cheaper than copper,
B) Straining is not supported. We know the copper cable requires more amplification, but this does not give us a right to suggest that anything is strained. The copper could be able to handle a lot of things.
C) I know that copper requires more amplification than fiber optic to carry signals for long distances. As for what can carry more signals simultaneously? That is unsupported. No reason why copper couldn't do the same as fiber optic.
D) No information on speed between the two is given.
E) We know the fiber optic costs more to manufacture than copper. We are told that the copper cable network is more expensive overall due to the frequent amplification. Thus, we have support to say that this amplification exceeds the extra cost of manufacturing fiber optic. If it did not exceed, we would not expect the copper to be more expensive overall.
This stimulus is really not difficult, it just has a lot of information.
We are told that although the costs of manufacturing the fiber optic cable is more expensive than manufacturing the copper cable, the copper cable network is more expensive overall.
We are then given information as to why it is the case that copper cable network is more expensive overall.
We are told that copper cable requires frequent amplicfication, whereas the fiber optic do not.
Answer choices:
A) Cannot infer if it is the material. Could be the process used to make it into a telephone cable. Perhaps the materials are actually cheaper than copper,
B) Straining is not supported. We know the copper cable requires more amplification, but this does not give us a right to suggest that anything is strained. The copper could be able to handle a lot of things.
C) I know that copper requires more amplification than fiber optic to carry signals for long distances. As for what can carry more signals simultaneously? That is unsupported. No reason why copper couldn't do the same as fiber optic.
D) No information on speed between the two is given.
E) We know the fiber optic costs more to manufacture than copper. We are told that the copper cable network is more expensive overall due to the frequent amplification. Thus, we have support to say that this amplification exceeds the extra cost of manufacturing fiber optic. If it did not exceed, we would not expect the copper to be more expensive overall.
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