What file is necessary to enable CD-ROM support under MS-DOS?

What file is necessary to enable CD-ROM support under MS-DOS?

• A. MSCDEX.EXE
• B. MSCDROM.SYS
• C. CDROM.SYS
• D. CONFIG.SYS

Answer: (A)

The file essential for enabling CD-ROM support under MS-DOS is MSCDEX.EXE. This file serves as a device driver that provides the necessary command-line interface for accessing and using CD-ROM drives. When booting up, MS-DOS looks for this executable file to establish communication between the operating system and the CD-ROM hardware, allowing the system to recognize and interact with the CD-ROM drive. While other options may seem relevant, they play different roles in the overall functionality. For instance, MSCDROM.SYS is a device driver that needs to be loaded in the CONFIG.SYS file to facilitate the use of CD-ROM devices at the hardware level, but it is MSCDEX.EXE that is specifically responsible for making the drive's contents accessible to the user and applications. Thus, for CD-ROM support under MS-DOS, MSCDEX.EXE is indispensable.

The file essential for enabling CD-ROM support under MS-DOS is MSCDEX.EXE. This file serves as a device driver that provides the necessary command-line interface for accessing and using CD-ROM drives. When booting up, MS-DOS looks for this executable file to establish communication between the operating system and the CD-ROM hardware, allowing the system to recognize and interact with the CD-ROM drive.

While other options may seem relevant, they play different roles in the overall functionality. For instance, MSCDROM.SYS is a device driver that needs to be loaded in the CONFIG.SYS file to facilitate the use of CD-ROM devices at the hardware level, but it is MSCDEX.EXE that is specifically responsible for making the drive's contents accessible to the user and applications. Thus, for CD-ROM support under MS-DOS, MSCDEX.EXE is indispensable.