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Digital ElectronicsError Detection Codes

If a CRC generator polynomial has degree 4, how many CRC check bits are appended to the data word?

  • A2
  • B3
  • C4
  • D5
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Correct Answer: C. 4
Explanation: The remainder from division by a degree-r generator polynomial has at most r bits, so a degree-4 generator produces four CRC bits.
Reference: Standard digital electronics: CRC redundancy
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