Which file is transferred when computer is start up?
A
Document
B
Program files
C
Operating system
D
System files
Correct Answer: System files
A system file in computers is a critical computer file without which a computer system may not operate correctly. These files may come as part of the operating system, a third-party device driver or other sources. Microsoft Windows and MS-DOS mark their more valuable system files with a "system" attribute to protect them against accidental deletion.