Multiple choice

Which of the following is not an operating system software?

  1. MS-DOS

  2. Window 95/98

  3. UNIX

  4. Adobe
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

MS-DOS, Windows, and UNIX are all operating systems that manage computer resources. Adobe is a software company that produces application software like Photoshop, not an operating system.

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