This book contains the number of multiple choice questions, which are especially designed for the fresh undergraduate who wants to prepare for the interview for seeking job in MNC's. This book contains the questions related to Computer fundamentals and operating system.A computer is an advanced electronic device that takes raw data as an input from the user and processes it under the control of a set of instructions (called program), produces a result (output), and saves it for future use. This tutorial explains the foundational concepts of computer hardware, software, operating systems, peripherals, etc. along with how to get the most value and impact from computer technology.An operating system (OS) is system software that manages computer hardware, software resources, and provides common services for computer programs.Time-sharing operating systems schedule tasks for efficient use of the system and may also include accounting software for cost allocation of processor time, mass storage, printing, and other resources.