8th Class Computers Science Data Representation Question Bank

done Introduction to Data Representation Total Questions - 10

• question_answer1)
  Steve wants to convert 10111 in to decimal number. Which one of the following is the correct conversion?
  A)
   48                    done clear
  B)
   23 done clear
  C)
   29                    done clear
  D)
   3000 done clear
  E)
   None of these done clear
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• question_answer2)
  Find out the one's complement of 1100111?
  A)
   0011000   done clear
  B)
   0011111 done clear
  C)
   1100110                       done clear
  D)
   0100110 done clear
  E)
   None of these done clear
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• question_answer3)
  The hexadecimal number system is based on base 16. Which one of the following is an example of hexadecimal number?
  A)
   232G               done clear
  B)
   137H done clear
  C)
   120AG                         done clear
  D)
   121BC done clear
  E)
   None of these done clear
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• question_answer4)
  Which one of the following is the correct conversion of \[{{64}_{10}}\]?
  A)
   1000000                       done clear
  B)
   0000001 done clear
  C)
   1000100                       done clear
  D)
   1111111 done clear
  E)
   None of these done clear
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• question_answer5)
  In hexadecimal number system D is represented by_________.
  A)
   11                                done clear
  B)
   12 done clear
  C)
   13                                done clear
  D)
   15 done clear
  E)
   None of these done clear
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• question_answer6)
  Which of the following statements are true about binary number system?
  A)
   A binary number system is based on 2. done clear
  B)
   The whole binary number system depends on two digits these are 0 and 1, respectively. done clear
  C)
   11002001 is the best example of binary number. done clear
  D)
   Both A and B are true. done clear
  E)
   None of these done clear
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• question_answer7)
  The digital system usually operate on ________ system.
  A)
   binary       done clear
  B)
   decimal done clear
  C)
   octal                done clear
  D)
   hexadecimal done clear
  E)
   None of these done clear
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• question_answer8)
  Octal coding involves grouping the bits in:
  A)
   5' 5                              done clear
  B)
   7' 5 done clear
  C)
   4' 5                              done clear
  D)
   3' 5 done clear
  E)
   None of these done clear
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• question_answer9)
  The number 128 is equivalent to decimal:
  A)
   12                                done clear
  B)
   20 done clear
  C)
   10             done clear
  D)
   4 done clear
  E)
   None of these done clear
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• question_answer10)
  The number 1001012 is equivalent to octal:
  A)
   54                                done clear
  B)
   45 done clear
  C)
   37                                done clear
  D)
   25 done clear
  E)
   None of these done clear
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