Multiple choice technology operating systems

Which of the following extensions suggest that the file is a backup copy

  1. Bak

  2. Bas

  3. Com

  4. Txt
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A Correct answer
Explanation

The .BAK extension is the standard convention for backup files across many software applications. When programs create backup copies, they typically use .BAK to indicate it's a duplicate of the original file. .BAS is for BASIC source code, .COM is a command executable format, and .TXT indicates plain text files. Only .BAK specifically denotes a backup.

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