Multiple choice

An operating system intended for use on microprocessor based systems that supports a single user is

  1. PC-DOS

  2. MS-DOS

  3. UNIX

  4. CP/M
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

CP/M (Control Program for Microcomputers) was a widely used single-user operating system for early 8-bit microcomputers. While MS-DOS and PC-DOS are also single-user systems, CP/M was the industry standard for the first generation of microprocessor-based systems. UNIX, by contrast, is a multi-user and multi-tasking operating system.

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