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Which of the following is not an operating system?
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- Multi user-Single tasking
- Single user- Single tasking
- Single user-Multitasking
- Multi user-Multitasking
Correct Option: A
A multi-user operating system allows multiple users to access a computer system at the same time. Although frequently associated with multiprogramming, multiuser operating system does, not imply multiprogramming or multitasking.