Question

which of the following software is not infected by a virus
(a)MS-DOS
(b)Windows
(c)MS-Office
(d). a and b

Answer 1

MS-DOS is a working framework for x86-based PCs generally created by Microsoft.

By and large, MS-DOS, its rebranding as IBM PC DOS, and some working frameworks endeavoring to be good with MS-DOS, are now and then alluded to as "DOS". Microsoft Windows is a gathering of a few graphical working framework families, which are all created, advertised, and sold by Microsoft.

Every family takes into account a specific segment of the processing business.