MCQ IN COMPUTER SCIENCE & ENGINEERING

Detailed explanation-1: -The Need for Operating System: Operating System is a program that acts as an Interface between the system hardware and the user making the tasks easier. It is important software which runs on a computer and controls the set of instructions and wisely utilizes each part of the Computer.

Detailed explanation-2: -Users interact indirectly through a collection of system programs that make up the operating system interface. The interface could be: A GUI, with icons and windows, etc. A command-line interface for running processes and scripts, browsing files in directories, etc.

Detailed explanation-3: -The operating system (OS) manages all of the software and hardware on the computer. It performs basic tasks such as file, memory and process management, handling input and output, and controlling peripheral devices such as disk drives and printers.

Detailed explanation-4: -Functions of an operating system. An operating system provides three essential capabilities: It offers a UI through a CLI or GUI; it launches and manages the application execution; and it identifies and exposes system hardware resources to those applications–typically, through a standardized API. UI.

Detailed explanation-5: -An operating system allows the user application programs to interact with the system hardware. Operating systems provide an atmosphere where different applications and programs can do useful work, but it does not provide any function by itself.