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kinglazy kinglazy
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6 years ago
_____ are glass tubes surrounded by concentric layers of glass, called cladding, to form a light path through wire cables.
 A) Twisted pair cables
  B) Copper line cables
  C) Air-spaced coaxial cables
  D) Fiber-optic cables
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red r.red r.
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6 years ago
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kinglazy Author
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6 years ago
Above and beyond my expectations for this site
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