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Frage 489

What is the advantage of including parity bits in ASCII characters?

  1. Faster transmission rate
  2. Signal-to-noise ratio is improved
  3. A larger character set is available
  4. Some types of errors can be detectedRichtige Antwort

Erklärung

A parity bit is set so that the number of ones in each character is odd or even by prior agreement, letting the receiver tell that something is wrong whenever the count does not match. It reveals errors but cannot identify which bit changed, and it misses errors that flip an even number of bits.

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Frage 489: What is the advantage of including parity bits in ASCII… · FCC Amateur Extra Class (Element 4) · Questena