What is the name of the executable file for Microsoft Backup in DOS?

The executable file for Microsoft Backup in DOS is named MSBACKUP.EXE. This program was included with older versions of Microsoft Windows and MS-DOS, providing users with a simple utility to back up their files and directories. The name follows a clear naming convention that includes the prefix "MS," indicating its Microsoft origin, followed by the term "BACKUP," which clearly describes its function. The ".EXE" extension signifies that it is an executable program.

Other options do not accurately reflect the correct naming convention or spelling of the executable file. For instance, MBACKUP.EXE lacks the "MS" prefix, which is characteristic of Microsoft applications. Similarly, MSBACKU.EXE and MSBACK.EXE miss part of the necessary components of the full name, leading to confusion over their identities and functionalities. Thus, MSBACKUP.EXE is the only option that correctly names the Microsoft Backup executable as used in DOS environments.