Q391
Which of the following is a type of systems software used on microcomputers?
A.
MS-DOS
B.
PC-DOS
C.
Unix
D.
All of the above
AnswerE.
None of the above
Answer: Option D
Solution
Answer: Option D
Solution:
The operating system (OS) is the best known example of system software. The OS manages all the other programs in a computer. According to some definitions, system software also includes system utilities, such as the disk defragmenter and System Restore, and development tools such as compilers and debuggers.