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Ans.3 FUNCTION OF AN OPERATING SYSTEM
1. It manage all devices of a computer and keep track of the status of the device whether It is busy or not.
2. It controll software resources of the computer .
3. It also checks whether the device is functioning properly or not .
4. It keeps the track of the amount of disk space used by a specific file.
5. It allows you to create copy ,move or delete file.
Ans.4
1. Interactive ( GUI based )
A GUI is a user friendly interface in which commands can be entered by clicking / double clicking / right clicking a mouse
2. Single user Single Task OS
It allows only one user to do a task on computer one at a time
3. Multiuser OS
It enable multiple users to work on the same computer at different times or simultaneously
4. Real time OS
It is used to control machinery , Scientific instruments like robots in complex animation
5. Distributed OS