Multiple choice

Which of the following operating systems is produced by IBM

  1. OS-2

  2. Windows

  3. DOS

  4. UNIX
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

OS/2 (written as OS-2 in the question) was an operating system developed jointly by IBM and Microsoft. It was IBM's flagship PC operating system in the late 1980s and early 1990s before Windows gained dominance.

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