Practice Quiz

FSOT Pro

Category - Computers

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In terms of digital data stored on a computer, what is an extension?
  1. A set of numbers that occur at the beginning of a file name which specify when the file was created
  2. The three-to-six character ending to a file name which specifies what type of file it is
  3. Any software upgrade that extends the lifetime of a program on the computer
  4. Extra storage space for files
Explanation
Answer: B - An extension is the three-to-six character ending to a file name which specifies what type of file it is and, often, the program in which it was created. For example, an .mp3 file is an audio file, which is a generic, non-program specific extension. Conversely, .pages is a file created in the program Pages in the Mac desktop publishing suite iWork.
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