NTA: UGC NET Exam :Computer Science Mock Test on Computer Arithmetic

This Quiz is posted with the sole aim of guiding the aspirants of NTA: UGC-NET Exam to the path of success. To sharpen the edges of your own intelligence and practice, in a structured and concrete manner to ensure you definite Success in your endeavor and will Pave your way for a successful career in Teaching (or) Research Profession . All the very best...... Knock the door of success......
  1.  Which of the following does not need extra hardware for DRAM refreshing?
    1.  Motorola-6800
    2.  8085
    3.  X-130
    4.  Z-80

  2. What is the first OS used in microprocessor?
    1.  DOS
    2.  CPIM
    3.  Multics
    4.  Zenix

  3. A + B can be implemented by _____.
    1.  NOR gate
    2.  NAND gate
    3.  AND gate
    4.  Both (A) & (B)

  4. Property of locality of reference may fail,if a program has ______. 
    1.  many operands
    2.  many unconditional jumps
    3.  many conditional jumps
    4.  All of the above

  5. Bipolar devices are desirable in the fabrication of which of the following components _______.
    1.  micro program memory
    2.  cache memory
    3.  main memory
    4.  Both (A) & (B)

  6. If A + B = C ( + stands for the XOR operator)
    1.  A + B = B
    2.  A + B +C = 0
    3.  B + C = A
    4.  All of the above 

  7. What is the binary equivalent of the Gray code 11100 ?
    1.  10111
    2.  10110
    3.  01001
    4.  01101

  8.  How many characters per sec (7 bits + parity) can be transmitted over a 2400-bps line in asynchronous mode?
    1.  320
    2.  624
    3.  445
    4.  240

  9. A number of system uses 20 as the radix. The excess code that is necessary for its equivalent binary coded representation is ______.
    1.  4
    2.  8
    3.  6
    4.  7

  10. Which of the following units can be used to measure  the speed of the computer?
    1.  MIPS
    2.  FLOPS
    3.  BAUD
    4.  Both (A) & (B)


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