Multiple choice general knowledge science & technology

Which of the following is not an Operating System?

  1. UNIX

  2. DOS

  3. OSD

  4. SuSE
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

UNIX and DOS are well-known operating systems. SuSE (now SUSE Linux) is a Linux distribution and thus an operating system. OSD is not a recognized operating system - it appears to be a made-up option for this question.

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