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  • Question
  • Error detecting code is


  • Options
  • A. an error-detecting code based on a summation operation performed on the bits to be checked
  • B. a check bit appended to an array of binary digits to make the sum of all the binary digits.
  • C. a code in which each expression conforms to specify rules of construction, so that if certain errors occur in an expression, the resulting expression will not conform to the rules of construction and thus the presence of the error is detected.
  • D. the ratio of the data units in error to the total number of data units
  • E. None of the above

  • Correct Answer
  • a code in which each expression conforms to specify rules of construction, so that if certain errors occur in an expression, the resulting expression will not conform to the rules of construction and thus the presence of the error is detected. 


  • More questions

    • 1. Which option will be used with touch command to change the access time?

    • Options
    • A. -a
    • B. -b
    • C. -t
    • D. -h
    • E. None of the above
    • Discuss
    • 2. Routers are often used to implement FIREWALLS

    • Options
    • A. True
    • B. False
    • Discuss
    • 3. What is the i/o address for com2?

    • Options
    • A. 2vb
    • B. 2f8
    • C. 8f8
    • D. 330
    • Discuss
    • 4. "Parity" errors usually indicate bad memory.

    • Options
    • A. True
    • B. False
    • Discuss
    • 5. On the 16-bit ISA bus, IRQ2 is elevated to which higher level interrupt?

    • Options
    • A. 9
    • B. 11
    • C. 13
    • D. 15
    • E. None of the above
    • Discuss
    • 6. How many DMA channels are there in an AT class PC?

    • Options
    • A. 3
    • B. 4
    • C. 7
    • D. 8
    • E. None of the above
    • Discuss
    • 7. _____ has become the most widely used bipolar family.

    • Options
    • A. DTL
    • B. TTL
    • C. ECL
    • D. MOS
    • E. None of the above
    • Discuss
    • 8. How many bytes are there in 1011 1001 0110 1110 numbers?

    • Options
    • A. 1
    • B. 2
    • C. 4
    • D. 8
    • E. None of the above
    • Discuss
    • 9. What switch would you use to view Smartdrive statistics?

    • Options
    • A. /x
    • B. /e:
    • C. /s
    • D. /o:n
    • E. None of the above
    • Discuss
    • 10. Which of the following command lists the last 10 lines of a file?

    • Options
    • A. grep
    • B. tail
    • C. head
    • D. cat
    • E. None of the above
    • Discuss


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