Textbook in PDF format

Data communications and computer networks are two aspects of a multifarious field that caters to both telecommunications and computing industries. Over the past 10 years, an enormous growth has been seen in this field. Nowadays, when we talk about communications and networking, we are not restricted to just traditional telephone networks or wired LANs such as Ethernet; rather, we have plentiful new developments including Wi-Fi, 2G and 3G mobile networks, Bluetooth, WAP and wireless local loops. Because of these technological advancements, the demand for the courses on data communications and computer networks has been continuously increasing. Keeping pace with this trend, almost all universities have integrated the study of data communications and computer networks in B.Tech. (CSE and IT), M.C.A. and M.B.A. courses. This book, Data Communications and Computer Networks, in its unique easy-to-understand question-and-answer format, directly addresses the need of students enrolled in these courses. The questions and corresponding answers in this book have been designed and selected to cover all the necessary material in data communications and networking as per the syllabi of most universities. The text has been designed to make it particularly easy for students having little or even no background in data communications and networking to grasp the concepts. The students can use it as a textbook for one- or two-semester course while interested professionals can use it as a self-study guide. The orga-nized and accessible format allows students to quickly find the questions on specific topic. This book is a part of series named Express Learning Serieswhich has a number of books designed as quick reference guides