MAH MCA CET 2025
What is the main difference between a process and a thread?
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Answer: Option C — A process has its own memory space, while a thread shares the memory of the process
Detailed Solution
Each process has its own address space; the threads of a process share that process’s memory and resources.
Options (A) and (B) reverse the facts (threads are the lightweight units), and threads can run concurrently, so (D) is false.
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Operating System Basics — Preparation
This question tests your understanding of Operating System Basics, a key topic in the Computer Awareness section. The detailed solution above uses a step-by-step approach to show the reasoning, and where available, a shortcut that helps you solve similar questions in under 90 seconds during the actual exam.
An operating system (OS) is the system software that manages a computer's hardware and provides services to programs and users. This topic covers the main functions of an OS: process management, memory management, file management, device management and security. It also covers types of operating systems (batch, multiprogramming, multitasking, multiuser, real-time and distributed), common examples such as Windows, Linux, macOS, Android and iOS, and interface types such as the command-line interface and the graphical user interface. Exam questions test the functions of an OS, identifying the type of OS suited to a situation, booting (cold and warm boot), and basic terms such as kernel, shell, file system and multitasking. The kernel is the core of the OS that directly controls the hardware, while the shell is the interface through which users give commands. Practise the operating system basics questions below. Each answer includes an explanation.