Q. Operating system is mainly comprised of

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Q. For authentication purpose, operating system requires

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Q. In icon based system menus are displayed on

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Q. Operating system programs that are manipulated are asked by the

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Q. X-windows operating system is a user's interface that is

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Q. For allocating resources the CPU has individual

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Q. MAC operating system is an abbreviation of

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Q. Common desktop environment program of operating system is a

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Q. User interface of operating system programs is provided by

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Q. In graphical user interface users uses

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Q. Getting time and date of the computer system is

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Q. Readfile() function of the operating system is for reading

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Q. When error occurs, program of the operating system automatically gets

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Q. Communication between devices of computer system is provided by

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Q. In command interpreter environment of the operating system, commands are executed by

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Q. Create and delete file of the programs are

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Q. Input output device allocation is provided by

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Q. HANDLE file is the file to

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Q. Functions available for the application programmers is provided by

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Q. In graphical user interface files are selected through

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