A

Admin • 833.24K Points
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Q. The residual error rate is the

  • (A) Probability that one or more errors will be detected when an error detection mechanism is used
  • (B) Signal to noise ratio divided by the ratio of energy per bit to noise per hertz
  • (C) Number of bit errors per twenty four hours of continuous operation on an asynchronous line
  • (D) Probability that one or more errors will be undetected when an error detection scheme is used
  • Correct Answer - Option(D)
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Explanation by: Admin

Residual error rate refers to the likelihood that errors remain undetected after applying an error detection method.

  • It measures how effective an error detection mechanism is in catching errors; ideally, this rate should be very low.

Other options describe different concepts:

  • (A) describes the probability of detecting errors (not residual).
  • (B) is unrelated to error rates.
  • (C) is a measure of bit error rate over time, not residual error rate.

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