Functions of Operating System: Download PDF for Preparation

Functions of Operating System:

Functions of operating system (OS) is an important computer awareness topic for the candidates to prepare for competitive exams. “What is an Operating System?” – This is the basic information that you should know before going through the functions of operating system. This article will help many candidates preparing for various competitive exams such as IBPS RRB, IBPS SO, etc. So, candidates use this functions of operating system pdf to prepare for the competitive exams. In this pdf, you can cover, what is OS, the types of operating system, and the major functions of operating system. So, prepare with this pdf and know complete details regarding the list of operating system, operating system concepts, and functions of OS. Then use the pdf for the exam revision purpose. So that, you can attain a good score in the computer awareness section.



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What is Operating System and its types?

An Operating System (OS) could be software that acts as an interface between computer components and the user. Every Computer system must have a minimum of one software to run other programs Applications used: Browsers, MS Office, Notepad Games, etc., need some environment to run and perform its tasks.

Types of Operating System: Here we have added some common operating system types.

  • Microsoft Windows
  • Mac OS
  • Android
  • iOS
  • Linux

Major Functions of Operating System (OS):

Here we have added the major functions of operating system.

1. Functions of operating system (OS)-Process Management:

Process management involves various tasks like creation, scheduling, termination of processes, and a deadlock. It also protects the resources of every process from other methods and allows synchronization among processes. it’s the duty of OS to manage all the running processes of the system

2. Functions of operating system (OS) – Memory Management:

Memory management is that the functionality of a software system that handles or manages primary memory and moves processes back and forth between main memory and disk during execution. Memory management keeps track of each and every memory location, irrespective of either it’s allocated to some process or it’s free. It checks what proportion of memory is to be allocated to processes. It decides which process will get memory at what time. It tracks whenever some memory gets freed or unallocated and correspondingly it updates the status.

3. Functions of operating system (OS) – File Management:

File management is defined because of the process of manipulating files in automatic data processing system, it management includes the method of making, modifying and deleting the files.

4. Functions of operating system (OS) – Device Management:

Keep tracks of all devices and also the program which is responsible to perform this is often called I/O controller. Monitoring the status of every device like storage drivers, printers and other peripheral devices. The four main functions are monitoring the status of every device, enforcing present policies to see which process will get a tool and for the way long, allocating the devices and deallocating them at the method level and therefore the job level.

5. Functions of operating system (OS) – Secondary storage Management:

Systems have several levels of storage which have primary storage, external storage, and cache storage. Instructions and data must be stored in primary storage or cache in order that a running program can reference it.

6. Functions of operating system (OS) – I/O System Management:

One of the most objects of any OS is to cover the peculiarities of that hardware devices from the user.

7. Functions of operating system (OS) – Security

Security refers to providing a protection system to system resources like CPU, memory, disk, software programs, and most significantly data/information stored within the ADP system. If a worm is travel by an unauthorized user, then he/she may cause severe damage to the computer or data stored in it.

8. Functions of operating system (OS) – Command Interpretation:

A command interpreter could be a system software that understands and executes commands that are entered interactively by an individual or from another program. Command interpreter is a very important part of any package. A command interpreter is usually also called a command shell or just a shell.

9. Functions of operating system (OS) – Networking:

The basic purpose of the network OS is to permit shared file and printer access among multiple computers in a very network, typically an area network (LAN), a personal network or to other networks.

10. Functions of operating system (OS) – Job Accounting:

Operating system Keeps track of your time and resources utilized by various tasks and users, this information will be wont to track resource usage for a specific user or group of users.

So, candidates study complete details here and know about the functions of OS. In the exams, you can have questions like, “what is OS?”, Operating system definition, operating system types, etc. So, prepare in the exam point of view and score more marks in the computer awareness section. In each competitive exam, candidates have to work very hard to reap success. So focus on all the sections. Don’t be careless about the computer awareness section. If you prepare well for this section, you can overtake many candidates in the competition. So cover the computer awareness section well for the exam. In the computer awareness section, there are various topics. Among them, the functions of OS is also an important topic. So, cover all the topics with dedication.


Here we have added some important faqs regarding the definition of OS, different types of operating system, and their functions.

Q: What is OS full form?

A: OS full form is operating system.


Q: What are the 5 main functions of an operating system?

A: Memory management, Process management, file management, secondary storage management, security, etc.


Q: What are the 5 operating system?

A: The Five most common operating systems are Microsoft Windows, Apple macOS, Linux, Android, and Apple’s iOS.

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