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Coaxial cables are categorized by Radio Government rating are adapted for specialized functions. Category RG-59 with impedance 75 Ω used for

  • A.Cable TV
  • B.Ethernet
  • C.Thin Ethernet
  • D.Thick Ethernet

Answer: A

The coaxial cable of category RG-59, with an impedance of 75 ohms, is used for cable TV. It is a thin cable with a solid centre conductor, suited to carrying video signals from the antenna or a cable network to the television set.

Ethernet uses 50 ohm cables: thin Ethernet uses RG-58 and thick Ethernet uses RG-8 or RG-11. So the options that name Ethernet types are wrong because their cables are of a different impedance and category.

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