UGC NET COMPUTER SCIENCE SOLVED PAPERS 2017-19 - UGC NET Computer Science November 2017 Paper 2

37. Which module gives control of the CPU to the process selected by the short - term schedular?

  • Option : A
  • Explanation :
    There are three type of scheduler:
    1. Short-term scheduler
    2. Mid-term scheduler
    3. Long-term scheduler
    Dispatcher is responsible for handovering the control of CPU to the newly selected process by the Short-term scheduler.
    So, option (A) is correct.
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38. Two atomic operations permissible on Semaphores are __________ and __________.

  • Option : D
  • Explanation :
    Wait and signal are the atomic operation possible on semaphore.
    So, (D) is the correct option.
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40. Software re-engineering is concerned with:

  • Option : C
  • Explanation :
    Software Re- engineering is the examination and alteration of a system to reconstitute it in a new form. In other words, Software Re- engineering is a process of software development which is done to improve the maintainability of a software system.
    Option (C) is correct.
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