Operating System

By Prof. Sorav Bansal   |   IIT Delhi
Learners enrolled: 7143
The course will provide an introduction to Operating Systems (OS), their design and implementation. We will discuss the goals of an OS,and some successful and not-so-
successful OS designs. We will also discuss the following OS services in detail: thread scheduling, security, virtual memory, file system. We will understand the OS concepts practically by directly studying the source code of a small but realistic OS.

PREREQUISTES :Introduction to Computer Science, Computer Architecture
INDUSTRY SUPPORT :Any computer systems hardware/software company

Course Status : Ongoing
Course Type : Core
Duration : 12 weeks
Start Date : 18 Jan 2021
End Date : 09 Apr 2021
Exam Date : 24 Apr 2021
Enrollment Ends : 01 Feb 2021
Category :
  • Computer Science and Engineering
  • Systems
Level : Undergraduate

Course layout

Week 1 : Introduction to OS Abstractions, Systems Calls and Threads
Week 2 : X86 Processor Basics
Week 3 : Address Translation (Virtual Memory)
Week 4 : Processes and Memory Allocation
Week 5 : Processes and Memory Allocation (contd.)
Week 6 : Process Creation, Modes, Stacks and Traps
Week 7 : Context Switching , Multiprocessors and Locking
Week 8 : Abstracting Synchronization
Week 9 : Abstracting Synchronization (contd.)
Week 10 : Virtual Memory Swapping
Week 11 : Files and Disk I/O
Week 12 : Journaling Filesystem (Linux ext3)

Books and references

Primary course reference (required):
xv6: a teaching operating system, by Cox,Kaashoek, and Morris. (xv6 home page at MIT)
 Secondary reference (optional):
 Operating System Concepts (Eighth Edition) by Silberschatz, Galvin, and Gagne. John Wiley & Sons, Inc., 2008. ISBN 0-470-12872-0. Book chapters for relevant topics are indicated on the schedule page (SG: ...).
 Other useful books:
Protected Mode Software Architecture by T.Shanley, MindShare, Inc., 1996. ISBN 0-20-155447-X. This book rehashes several IA32 manuals by Intel. The C Programming Language (Second Edition) by B. W. Kernighan and D. M.Ritchie, Prentice-Hall 1988. ISBN 0-13-110362-8.
The definitive guide to C, but see also the excellent online C reference http://www.cs.cf.ac.uk/Dave/C/CE.html.
Undocumented PC (Second Edition) by Frank van Gilluwe, Addison-Wesley Professional 1996. ISBN 0-20-147950-8. This book was written for hard-core PC software hackers. It has information about various Intel architectures (8086, 286, 386, 486, Pentium, Pentium Pro) and PC systems. No need to read this book to do the projects.
Operating Systems Design and Implementation (Third Edition) by A. Tanenbaum and A. Woodhull, Prentice-Hall, 2Inc, 2006. ISBN 0-13-142938-8. A famous OS textbook including a full source listing of the MINIX 3 system.
Modern Operating Systems (Second Edition) by A. Tanenbaum, Prentice-Hall, Inc, 2001. ISBN 0-13-031358-0. Another excellent OS textbook.

Instructor bio

Prof. Sorav Bansal

IIT Delhi
Sorav Bansal is an Associate Professor at the CS department in IIT Delhi, and works in the areas of programming languages and operating systems. His primary research interests involve investigating superoptimization-based compiler design and higher-level abstractions for OS/Network programming. Sorav obtained his B.Tech. from IIT Delhi, and Ph.D. from Stanford University.

Course certificate

The course is free to enroll and learn from. But if you want a certificate, you have to register and write the proctored exam conducted by us in person at any of the designated exam centres.
The exam is optional for a fee of Rs 1000/- (Rupees one thousand only).
Date and Time of Exams: 24 April 2021 Morning session 9am to 12 noon; Afternoon Session 2pm to 5pm.
Registration url: Announcements will be made when the registration form is open for registrations.
The online registration form has to be filled and the certification exam fee needs to be paid. More details will be made available when the exam registration form is published. If there are any changes, it will be mentioned then.
Please check the form for more details on the cities where the exams will be held, the conditions you agree to when you fill the form etc.


Average assignment score = 25% of average of best 8 assignments out of the total 12 assignments given in the course.
Exam score = 75% of the proctored certification exam score out of 100

Final score = Average assignment score + Exam score

YOU WILL BE ELIGIBLE FOR A CERTIFICATE ONLY IF AVERAGE ASSIGNMENT SCORE >=10/25 AND EXAM SCORE >= 30/75. If one of the 2 criteria is not met, you will not get the certificate even if the Final score >= 40/100.

Certificate will have your name, photograph and the score in the final exam with the breakup.It will have the logos of NPTEL and IIT Madras .It will be e-verifiable at nptel.ac.in/noc.

Only the e-certificate will be made available. Hard copies will not be dispatched.

Once again, thanks for your interest in our online courses and certification. Happy learning.

- NPTEL team

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