GATE2021

Publications

Computer Science& Information Technology

Fully solved with explanations

Analysis of previous papers

Topicwise presentation

Thoroughly revised & updated

GATE - 2021 : Computer Science & IT Topicwise Previous Solved Papers (1990-2020)© Copyright MADE EASY Publications.All rights are reserved. No part of this publication may be reproduced, stored in or introduced into a retrieval system, or transmitted in any form or by any means (electronic, mechanical, photo-copying, recording or otherwise), without the prior written permission of the above mentioned publisher of this book.

First Edition : 2007

Second Edition : 2008

Third Edition : 2009

Fourth Edition : 2010

Fifth Edition : 2011

Sixth Edition : 2012

Seventh Edition : 2013

Eighth Edition : 2014

Ninth Edition : 2015

Tenth Edition : 2016

Eleventh Edition : 2017

Twelfth Edition : 2018

Thirteenth Edition : 2019

Fourteenth Edition : 2020

MADE EASY PUBLICATIONS has taken due care in collecting the data and providing the solutions, before publishing this book. Inspite of this, if any inaccuracy or printing error occurs then MADE EASY PUBLICATIONS owes no responsibility. We will be grateful if you could point out any such error. Your suggestions will be appreciated.

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Publications

Over the period of time the GATE examination has become

more challenging due to increasing number of candidates.

Though every candidate has ability to succeed but

competitive environment, in-depth knowledge, quality

guidance and good source of study is required to achieve

high level goals.

The new edition of GATE 2021 Solved Papers : Computer Science & Information Technology has been

fully revised, updated and edited. The whole book has been divided into topicwise sections.

At the beginning of each subject, analysis of previous papers are given to improve the

understanding of subject.

I have true desire to serve student community by way of providing good source of study and

quality guidance. I hope this book will be proved an important tool to succeed in GATE examination.

Any suggestions from the readers for the improvement of this book are most welcome.

B. Singh (Ex. IES)

Chairman and Managing Director

MADE EASY Group

Preface

Contents

1. Discrete and Engineering Mathematics ....................................................................................1-119

2. Theory of Computation ...............................................................................................................120-182

3. Digital Logic .....................................................................................................................................183-238

4. Computer Organization & Architecture ................................................................................239-300

5. Programming and Data Structures ......................................................................................... 301-391

6. Algorithms ........................................................................................................................................392-456

7. Compiler Design ............................................................................................................................457-488

8. Operating System ..........................................................................................................................489-557

9. Databases .........................................................................................................................................558-620

10. Computer Networks .....................................................................................................................621-675

11. General Aptitude ...........................................................................................................................676-715

Sl. Unit Pages