The term ____ refers to several single user operating systems developed by Microsoft in the early 1980s for personal computers.
A) UNIX
B) Mac OS X
C) LINUX
D) DOS

Question

Quizplus · Accepted Answer

The term DOS (Disk Operating System) refers to the operating systems developed by Microsoft in the early 1980s for personal computers. It was a single-user operating system that provided a command-line interface for the user. UNIX, Mac OS X, and LINUX are all multi-user operating systems that were developed later.

The Term ____ Refers to Several Single User Operating Systems