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Q:

Extensions are called ______?

  • 1
    D.N.S.
  • 2
    E-mail symbols
  • 3
    Top-Level Domain
  • 4
    Web machine address
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Answer : 3. "Top-Level Domain"
Explanation :

1. Extensions are called top-level domains.

2. File extensions are used so that the computer's operating system or OS can recognize the file type.

3. A file extension primarily refers to a suffix added to the end of a computer file (an object containing information, data or commands) to define the file type.

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