Operating System Study Material for Gate Exam

This article covers the operating system study material for gate exam.These operating system notes will help the student to prepare for gate exam. In this article, the objective behind the study of the operating system is explained. Some important topic to be asked in gate exam are listed in this article.

Operating System Study Material for Gate Exam

     What is the operating system?

     Why do we study the operating system?

      What are the real-world applications of the operating system?


operating system gate questions and answers

This article covers the operating system study material for gate exam. In this article, the objective behind the study of the operating system is explained. Some important topic to be asked in gate exam are listed in this article.These operating system tutorial will be really helpful for the student.

(A) About Operating System 

Operating System is a software which is used to manage computer system components and software resources and provides common services for computer programs

Sometimes we also call operating system an interface between user and hardware. The operating system provides an environment for application software to work. 

A special type of operating system called time-sharing operating systems which 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.

This course is designed to help the students gain an understanding of the Operating System and its application in the real world. It also gives a better glimpse of the design and the Implementation of the OS and also encompasses the various issues either related to the technical or theoretical.

After studying this subject student must able to know –

·         Basic functions and services of the operating system.

·         Different types of operating system and how they work.

·         How the operating system supports to execute a program or process.

·         Process synchronization

·         How the operating system manages memory

·         How the operating system handles Input/output and disk.

·         File system and file system security in the operating system.


   To study this subject it is necessary to have Knowledge of programming language C, elementary data structures and architecture of the computer. In this subject, we study the principle and concepts of operating systems in term of different topics such as processes scheduling & synchronization, memory management, file systems etc.

   (B)  Syllabus

topics to be cover in this subject

           1.  Introduction

o   Operating system and functions

o   Classification of Operating systems- Batch, Interactive, Timesharing, Real-Time System, Multiprocessor Systems, Multiuser Systems, Multiprocess Systems, Multithreaded Systems,

o   Operating System Structure- Layered structure, System Components,

o   Operating System services, Reentrant Kernels, Monolithic and Microkernel Systems.


o   Process Concept and process control block.

o   CPU Scheduling: Scheduling Concepts, Performance Criteria,

o   Process States, Process Transition Diagram, Schedulers,

o   Process address space, Process identification information,

o   Threads and their management,

o   Scheduling Algorithms, Multiprocessor Scheduling.

o   Deadlock: System model, Deadlock characterization, Prevention, Avoidance and detection,        from deadlock.


o   Principle of Concurrency,

o   Producer / Consumer Problem, Mutual Exclusion,

o   Critical Section Problem, Dekker’s solution, Peterson’s solution, Semaphores,

o   Test and Set operation;

o   Classical Problem in Concurrency- Dining Philosopher Problem,

o   Sleeping Barber Problem; Inter-Process Communication models and Schemes


o   Basic bare machine and  Resident monitor

o   Multiprogramming with fixed partitions,

o   Multiprogramming with variable partitions,

o   Protection schemes, Paging, Segmentation, Paged segmentation,

o   Virtual memory concepts, Demand paging, Performance of demand paging,

o   Page replacement algorithms, Thrashing, Cache memory organization, Locality of reference.

5.      I/O Management & File System

o   I/O devices, and I/O subsystems

o   I/O buffering, Disk storage and disk scheduling, RAID.

o   File concept, File organization, and access mechanism,

o   File directories, and File sharing,

o   File system implementation issues,

o   File system protection and security.

(C) Operating System Book References

Following books are followed to study the operating system subject in most of the university and institutes.

1.   Silberschatz, Galvin and Gagne, “Operating Systems Concepts”, Wiley

2.   Sibsankar Halder and Alex A Aravind, “Operating Systems”, Pearson Education.

3.   Harvey M Dietel, “ An Introduction to Operating System”, Pearson Education

4.   D M Dhamdhere, “Operating Systems : A Concept based Approach”, McGraw Hill.

5. Charles Crowley, “Operating Systems: A Design-Oriented Approach”, Tata McGraw Hill Education”.

6. Stuart E. Madnick & John J. Donovan. Operating Systems. McGraw Hill.

(D) Operating System Notes

Here you will get various article and operating system notes related to operating system concepts and examples that will help you to solve the operating system based questions for Gate Exam.

Memory Management

(E) Operating System Based Questions for Gate Exam

(F) Operating Interview Questions

More Article are coming soon....!



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Computer Science Junction: Operating System Study Material for Gate Exam
Operating System Study Material for Gate Exam
This article covers the operating system study material for gate exam.These operating system notes will help the student to prepare for gate exam. In this article, the objective behind the study of the operating system is explained. Some important topic to be asked in gate exam are listed in this article.
Computer Science Junction
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