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Computer Aptitude

OPERATING SYSTEM MCQs

Total Questions : 622 | Page 2 of 63 pages
Question 11. Which of the following is not a video file extension?
  1.    .avi
  2.    .wav
  3.    .mpeg
  4.    .mov
 Discuss Question
Answer: Option B. -> .wav
Question 12. Which is not executable file?
  1.    .com
  2.    .exe
  3.    .bat
  4.    .txt
 Discuss Question
Answer: Option D. -> .txt
Question 13. What is the extension of the font file?
  1.    .ttf
  2.    .mdb
  3.    .fft
  4.    .txt
 Discuss Question
Answer: Option A. -> .ttf
Question 14. To move to the beginning of a line of text, press the __________ key.
  1.    A
  2.    PgUp
  3.    Enter
  4.    Home
 Discuss Question
Answer: Option D. -> Home
Question 15. When was MS Windows operating system introduced?
  1.    1975
  2.    1985
  3.    1995
  4.    2000
 Discuss Question
Answer: Option B. -> 1985
Question 16. First operating system was developed in
  1.    1958
  2.    1976
  3.    1956
  4.    1946
 Discuss Question
Answer: Option C. -> 1956
Question 17. The maximum length of any single path from the root directory?
  1.    54
  2.    63
  3.    80
  4.    27
 Discuss Question
Answer: Option B. -> 63
Question 18. Which of the following refers to the associative memory?
  1.    the address of the data is generated by the CPU
  2.    the address of the data is supplied by the users
  3.    there is no need for an address i.e. the data is used as an address
  4.    the data are accessed sequentially
  5.    None of the above
 Discuss Question
Answer: Option C. -> there is no need for an address i.e. the data is used as an address
Question 19. The part of machine level instruction, which tells the central processor what has to be done, is
  1.    Operation code
  2.    Address
  3.    Locator
  4.    Flip-Flop
  5.    None of the above
 Discuss Question
Answer: Option A. -> Operation code
Question 20. To avoid the race condition, the number of processes that may be simultaneously inside their critical section is
  1.    8
  2.    1
  3.    16
  4.    0
  5.    None of the above
 Discuss Question
Answer: Option B. -> 1

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