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Operating System Practice Test Questions For All Competitive Exams
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An operating system (OS) is the program that, after being initially loaded into the computer by a boot program, manages all of the other application programs in a computer. The application programs on the computing device make use of the operating system by making requests for services through a defined application program interface (API).
 

Operating System Practice Test Questions For All Competitive Exams
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25 Questions

1. Which of the following terms explains the execution of more than one file at the same on a single processor?
2. Which of the following is the main program of MS-DOS?
3. …… provides process and memory management services that allow two or more tasks, jobs or programs to run simultaneously.
4. A command, in DOS, used to set a name to a disk, is
5. In DOS, the DIR command is used to
6. The simultaneously processing of two or more programs by multiple processors, is
7. Windows operating system is ...... and ...... .
8. DEL command is used to
9. Which commands are automatically loaded into main memory?
10. Which of the following is an operating system?
11. Which of the following is not an external command of DOS?
12. What do you understand by the term booting?
13. UNIX operating system is generally known as
14. An operating system is a/an
15. ......... controls the way in which the computer system does function and provides a means by which users can interact with the computer.
16. Every computer has a(n) ……, many also have ……
17. In DOS, the ‘label’ command is used to
18. System running more than one processes concurrently are called
19. Which of the following is the type of software that controls the internal operations in the computer?
20. Which of the following operating systems was first developed by Microsoft?
21. Which among the following is not a mobile operating system?
22. Real time systems must have
23. Which is the programming tool in UNIX?
24. The first graphical user interface was designed by
25. The purpose of DISKCOPY command is to

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