Multiple choice

Which of the following operating systems is used by Macintosh computers?

  1. System 7.0

  2. AU/X

  3. Unix

  4. Either (1) or (2)
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Early Macintosh computers used System 7.0 (the classic Mac OS) and also had A/UX (Apple's Unix variant). Both were used on Macs at different times or for different purposes - System for mainstream users, A/UX for workstation/Unix applications. Windows and generic Unix were not standard Mac OS.

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