Data Communications and Computer Networks : Prentice-Hall of India Pvt.Ltd : 9788120344662 : 01 Dec 2012 : About the book: data communications and computer networks this book provide a comprehensive coverage of data communications and computer networks in an easy to understand style. In this edition, new topics such as distributed systems, client server models, wireless lan, network security tools, web-based application servers, e-commerce, pgp (pretty good privacy) and ip security are included at appropriate places and some existing sections are also updated to enrich the contents. Intended primarily as a textbook for the students of computer science and engineering, electronics and communication engineering, master of computer applications (mca), and those offering it courses, this book would also be useful for practising professionals.