A

Admin • 670.22K Points
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Q. For carrying digital data over long distance using either analog signal or digital signal at approximately spaced points, we must have

  • (A) amplifiers
  • (B) repeater
  • (C) switch
  • (D) either amplifier or repeater
  • Correct Answer - Option(D)
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Explanation by: Admin
In case of long distance transmission we use amplifier or repeater. An amplifier enhances the strength of input signal. On the otherhand repeaters receives a signal and retransmits the same signal after increasing the power.

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