This fully revised and updated book, now in its Fourth Edition, continues to provide a comprehensive coverage of data communications and computer networks in an easy to understand style. The text places as much emphasis on the application of the concepts as on the concepts themselves. While the theoretical part is intended to offer a solid foundation of the basics so as to equip the student for further study, the stress on the applications is meant to acquaint the student with the realistic status of data communications and computer networks as of now. Audience 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. NEW TO THIS EDITION Three new chapters on: o Network Architecture and OSI Model o Wireless Communication Technologies o Web Security Appendix on Binary and Hexadecimal Numbering Key features Illustrates the application of the principles through highly simplified block diagrams. Contains a comprehensive glossary which gives simple and accurate descriptions of various terms. Provides Questions and Answers at the end of the book which facilitate quick revision of the concept.
