Operating System Questions Answers - Chapter 1

• 15. Which is single user operating system

  1. MS-DOS
  2. UNIX
  3. XENIX
  4. LINUX

  Answer And Explanation

  Answer: Option A

  Explanation:

  • View Answer
  • Comment on this question

• 16. Reference bit is used for

  1. Implementing LRU page replacement algorithm
  2. Implementing NRU algorithm
  3. To check the page table entry in the cache memory
  4. none of above

  Answer And Explanation

  Answer: Option B

  Explanation:

  • View Answer
  • Comment on this question

• 17. Which operating system reacts in the actual time

  1. Batch system
  2. Quick response system
  3. Real time system
  4. Time sharing system

  Answer And Explanation

  Answer: Option C

  Explanation:

  • View Answer
  • Comment on this question

• 18. Macintosh computer uses

  1. System 7.0
  2. AU/X
  3. Xenix
  4. none of above

  Answer And Explanation

  Answer: Option B

  Explanation:

  • View Answer
  • Comment on this question

• 19. Problem of thrashing is affected significantly by

  1. program structure
  2. program size
  3. primary storage size
  4. all of above

  Answer And Explanation

  Answer: Option A

  Explanation:

  • View Answer
  • Comment on this question

• 20. Which technique is used by operating systems to execute several programs concurrently by switching back and forth

  1. Partitioning
  2. Multitasking
  3. Windowing
  4. Paging

  Answer And Explanation

  Answer: Option C

  Explanation:

  • View Answer
  • Comment on this question

• 21. Dispatcher function is to

  1. put tasks in I/O wait
  2. schedule tasks in processor
  3. change task priorities
  4. All of above

  Answer And Explanation

  Answer: Option A

  Explanation:

  • View Answer
  • Comment on this question