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The primary purpose of an operating system is a …

A. To allow people to use the computer

B. To make the most efficient use of computer hardware

C. To make computer easier to use

D. To keep system programmer employed

Correct Answer : B.


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  1. Recently deleted files are stored in
  2. The Bankers algorithm is used
  3. ____________approach can place the data directly into the memory or take the data directly from the…
  4. ______________approach simplifies debugging and system verification.
  5. What is Dr. Watson?
  6. PVM stands for
  7. DSM stands for______________
  8. A process control block contains varies attributes required by _____________ to control a process.
  9. SRM stands for
  10. _______________refers to a strategy where whenever a resource is requested, it is only granted if it…
  11. Whenever you move a directory from one location to another
  12. An option commonly takes the form of a _____followed by __________characters.
  13. In_________________ model, when a process does a release access, the contents of all the modifications…
  14. When copying more than one file at a time, you must specify an existing directory as the ___________
  15. When a peripheral device needs immediate attention from the operating system, it generates a(n)
  16. The controller can access memory in memory cycles which are not used by the particular bank of memory…
  17. Which of the following is drop down list?
  18. Which of the following operating system reads and reacts in actual time?
  19. You can move a window to a different position on your screen by dragging it by its
  20. Process migration involves__________________
  21. A shared memory segment first needs to be allocated (create, using the__________ system call.
  22. The time taken by the Dispatcher to stop one process and start another running is known as _________________.
  23. One of the wonderful things about UNIX is its ___________names.
  24. Most accurate global time is based on oscillations of the ______________
  25. Because the I/O devices are not synchronized with the CPU, some information must be exchanged between…
  26. A page fault occurs when
  27. IDL stands for_____________________
  28. Ext2 is the standard file system of _______ and uses a block size of_____bytes
  29. Bootstrapping is also known as ______
  30. A process may create a new process by executing ___________system call.