Multiple choice general knowledge

Which of the Following is Not open-source software product.

  1. Apache

  2. Drupal

  3. Microsoft Office

  4. Mozilla Firefox
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Microsoft Office is a proprietary commercial software suite that requires purchase. Apache, Drupal, and Mozilla Firefox are all open-source software with freely available source code. Open-source means anyone can view, modify, and distribute the code.

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