operating system Model Questions & Answers, Practice Test for ibps clerk mains

Question :21

'DOS' floppy disk/operating system does not have

Answer: (e)

Question :22

Which of the following operating systems was first developed by Microsoft?

Answer: (e)

Question :23

MS-DOS is usually supplied on a

Answer: (b)

Question :24

Which one of the following DOS commands sends contents of the screen to an output device?

Answer: (e)

Question :25

Which of the following operating systems is also known as single user operating system?

Answer: (a)

ibps clerk mains IMPORTANT QUESTION AND ANSWERS
Operating System ibps clerk mains question answer with explanation PDF

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