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What does MSCDEX.EXE do?

  • A.Configures hard drives
  • B.it's a SCSI driver
  • C.BIOS setup
  • D.it's a CD-ROM DOS driver
  • E.None of the above

Answer: D

Correct answer: it’s a CD-ROM DOS driver

MSCDEX.EXE is the Microsoft CD-ROM Extensions: loaded from AUTOEXEC.BAT, it gives the CD-ROM a drive letter and supplies the file system for it, working with the hardware driver loaded earlier from CONFIG.SYS.

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