Now in its fourth edition, this revised text provides comprehensive coverage of data communications and computer networks in an easy to understand style. The text places as much emphasis on the application of concepts as on the concepts themselves. While the theoretical part is intended to offer a solid foundation in the basics so as to equip the student for further study, the stress on applications will acquaint students with the contemporary status of data communications and computer networks.

Intended primarily as a textbook for students of computer science and engineering, electronics and communication engineering, master of computer applications (MCA), this book would also be useful for practising professionals.

New to this edition:


Three new chapters on Network Architecture and OSI Model, Wireless Communication Technologies, and Web Security
An appendix on Binary and Hexadecimal Numbering


Key features:


Illustrates the application of principles through simplified block diagrams
Contains a comprehensive glossary which gives simple and accurate descriptions of various terms
Provides questions and answers which facilitate quick revision