Question

what does dos stand for?
a. disk operating system
b. disk opening system
c. disk only system
d. disk override system

Explanation:

DOS is an abbreviation. In the context of computer systems, it is a well - known term. "Disk operating system" is the correct full - form. "Opening", "only", and "override" do not make sense in this technical abbreviation context.

Answer:

A. Disk operating system