CompTIA® Comptia A+™ Certification Practice Questions

DOS boot files

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Q8. Which of the following files is NOT required for DOS to boot?

A. COMMAND.COM

B. MSDOS.SYS

C. IO.SYS

D. AUTOEXEC.BAT

Correct Answer: D

Explanation:

The file load order to start DOS is :

IO.SYS

MSDOS.SYS

CONFIG.SYS

COMMAND.COM

AUTOEXEC.BAT

Note that CONFIG.SYS, and AUTOEXEC.BAT are optional to load DOS where as IO.SYS, MSDOS.SYS, COMMAND.COM are required.

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