Quiz Questions Over Error-detecting Code

12 Questions | Total Attempts: 102

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Quiz Questions Over Error-detecting Code - Quiz

Error detection is an important factor that ensures that data reaches its recipient in its original form. Error detecting codes detect any noise and impairments that are introduced to the data as if moves from one point to another. Test your understanding of these codes by taking the quiz below.


Questions and Answers
  • 1. 
    An error correcting code has the following code words:  00000000, 00001111, 01010101, 10101010, 11110000. What is the maximum number of bit errors that can be corrected ?
    • A. 

      0

    • B. 

      1

    • C. 

      2

    • D. 

      3

  • 2. 
    ​​​​​Which transmission media has the highest transmission speed in a network?
    • A. 

      Coaxial Cable

    • B. 

      Twisted pair cable

    • C. 

      Optical fiber

    • D. 

      Electrical cable

  • 3. 
    Wireless transmission can be done via
    • A. 

      Radio waves

    • B. 

      Microwaves

    • C. 

      Infrared

    • D. 

      All of the mentioned

  • 4. 
    When 2 or more bits in a data unit has been changed during the transmission, the error is called
    • A. 

      Random error

    • B. 

      Burst error

    • C. 

      Inverted error

    • D. 

      None of the mentioned

  • 5. 
    CRC stands for
    • A. 

      Cyclic redundancy check

    • B. 

      Code repeat check

    • C. 

      Code redundancy check

    • D. 

      Cyclic repeat check

  • 6. 
    Coaxial cable consists of _______ concentric copper conductors.
    • A. 

      1

    • B. 

      2

    • C. 

      3

    • D. 

      4

  • 7. 
    Carrier is
    • A. 

      One or more conductors that serve as a common connection for a related group of devices

    • B. 

      A continuous frequency capable of being modulated or impressed with a second signal

    • C. 

      The condition when two or more sections attempt to use the same channel at the same time

    • D. 

      None of the above

  • 8. 
    In CRC there is no error if the remainder at the receiver is ____
    • A. 

      Equal to the remainder at the sender

    • B. 

      Nonzero

    • C. 

      Zero

    • D. 

      The quotient at the sender

  • 9. 
    Find even parity bit for 1001011
    • A. 

      0

    • B. 

      1

    • C. 

      2

    • D. 

      None of the above

  • 10. 
    If value of checksum is 0, then message is
    • A. 

      Accepted

    • B. 

      Rejected

    • C. 

      Sent back

    • D. 

      Resend

  • 11. 
    The checksum of 1111 and 1111 is _________.
    • A. 

      0000

    • B. 

      1111

    • C. 

      1110

    • D. 

      0111

  • 12. 
     The ________ between two words is the number of differences between corresponding bits.
    • A. 

      Hamming rule

    • B. 

      Hamming code

    • C. 

      Hamming distance

    • D. 

      None of the above

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