This fully revised and updated second edition of the book continues to provide a comprehensive coverage of data communications and computer networks in an easy to understand style. In this edition, a new chapter on data compression has been included and topics such as analog and digital transmission, data transmission basics, link control protocol, password authentication protocol and wireless application protocol services have been added at appropriate places. New to this edition is: a separate chapter on Data Compression; more questions and answers; and, addition of more examples in most of the chapters. Intended primarily as a textbook for the students of Computer Science and Engineering, Master of Computer Applications (MCA), and those offering IT courses, this book would also be useful for practising professionals.

�ber die Autorin bzw. den Autor

BRIJENDRA SINGH, Ph.D., is Professor of Information Technology, Vellore Institute of Technology (Deemed University), Vellore. Dr. Singh received his Ph.D. degree in the field of Computer Science from J.K. Institute of Applied Physics and Technology, University of Allahabad. He has taught and researched at various reputed institutions including IIT Kharagpur, Vikram Sarabhai Space Centre (VSSC), Trivandrum, REC Kurukshetra and Korea Atomic Energy Research Institute, Taejon, Korea. Besides, he is the author of two books and over forty-five technical papers related to Computer Science and Reliability Engineering. He is recipient of Gowari Memorial Award in 1995 from the Institution of Electronics and Telecommunication Engineers, Delhi. He has also received the honour of International Man of the Year (1999-2000) from International Biographical Centre, Cambridge, CB23QP, England.

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