Which of the following is an operating system?

[ A ]    Microsoft Excel
[ B ]    Microsoft Windows right
[ C ]    Microsoft Access
[ D ]    Microsoft Word
[ E ]    Microsoft PowerPoint
Answer : Option B
Explanation :
Microsoft Windows is a metafamily of graphical operating systems developed, marketed, and sold by Microsoft. It consists of several families of operating systems, each of which cater to a certain sector of the computing industry. Some of its recent versions include Windows 7, Windows 8, e t c . genre of a topics and thereby assist in discussion.
Computer Awareness Questions And Answers for competitive exams

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