Question

If a file has a '.bak' extension it refers usually to -

• A. Backup file
• B. Audio file
• C. Temporary file
• D. Deleted file

Answer 1

Answer:

A. Backup file

In computing, ". bak" is a filename extension commonly used to signify a backup copy of a file. When a program is about to overwrite an existing file (for example, when the user saves the document they are working on), the program may first make a copy of the existing file, with . bak appended to the filename.