Question

which is single user single tasking os?
1.windows
2.GUI
3.DOS
4.MAc OS​

Answer 1

4. Mac os is the best for single user

Answer 2

Answer:

MS-DOS is single user OS

Explanation:

so actually there were two versions of DOS - IBM PC DOS and MS-DOS because of collaboration between Microsoft and IBM. it was only meant for x86 hardware. single user means you can do only one task at a time.