Error Control in Data Communication Systems
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Questions and Answers

Which component of reliable data communication systems encompasses all methods used to detect and correct errors during data transmission?

  • Error Correction
  • Error Detection
  • Data Transmission Control
  • Error Control (correct)

    • What process refers to identifying whether transmitted data has been corrupted during transmission without correcting the errors?

  • Error Detection (correct)
  • Error Control
  • Error Correction
  • Data Corruption Identification

    • Which method involves sending extra bits with the data to allow the receiver to check for consistency and errors?

  • Parity Checks (correct)
  • Cyclic Redundancy Checks
  • Data Encryption
  • Error Correction

    • In which situation does error correction in communication systems involve retransmitting data to correct errors?

    <p>Receiver requests retransmission based on detected errors</p> Signup and view all the answers

    What is the purpose of error correction techniques in communication systems?

    <p>Identify and correct errors</p> Signup and view all the answers

    Which term describes the process of making it possible to correct errors in transmitted data?

    <p>Error Correction</p> Signup and view all the answers

    What is the purpose of a parity bit in error detection?

    <p>Ensuring the total number of 1-bits in the string is even</p> Signup and view all the answers

    How does a checksum help in error detection?

    <p>By calculating a value based on the sum of data elements</p> Signup and view all the answers

    What distinguishes a CRC from a normal checksum?

    <p>CRC involves polynomial division to detect errors</p> Signup and view all the answers

    What makes Hamming Code different from other error-detection techniques?

    <p>It detects and corrects single-bit errors using multiple parity-check equations</p> Signup and view all the answers

    In what way does interleaving contribute to error control in digital transmission?

    <p>By reordering and combining data packets to reduce burst errors</p> Signup and view all the answers

    'Automatic Repeat reQuest' (ARQ) primarily aims to achieve what in data transmission?

    <p>Achieve reliable data transfer through acknowledgments and timeouts</p> Signup and view all the answers

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