Question

Operating system of a computer __________________.

• A. Enables the programmer to draw a flow chart
• B. Links a program with subroutine with references
• C. Provides a layer, user friendly interface
• D. All of the above
• E. None of these

Answer 1

The correct option is C Provides a layer, user friendly interface

Operating system of a computer Provides a layer, user friendly interface.

The user interface sits as a layer above the operating system. It is the part of the application through which the user interacts with the application. Some operating systems, such as Microsoft Windows and Apple Macintosh, use graphical user interfaces. Other operating systems, such as Unix, use shells.

A user interface (UI) refers to the part of an operating system, program, or device that allows a user to enter and receive information. A text-based user interface (see the image to the left) displays text, and its commands are usually typed on a command line using a keyboard.