Innovation in information and communication technology has transformed the world drastically where everything, such as, ATMs, bank services, internet, mobile services, satellites, etc., are controlled and regulated by computers and networks. With technologies changing continuously, the scope of study and research is gaining popularity in this field. Data Communication and Networking is a textbook that offers in-depth exploration of this discipline with a new approach. Instead of rote learning and theoretical knowledge, the book presents complex principles and concepts in an application-centered module. The chapters contain extensive information on tools, new technologies, local- and wide-area networks, internet and security, data link protocols, models of communication, wireless mobile and multichannel data communication. Supported by a number of review questions at the end of each chapter, the book offers well-structured self-assessment exercises to fourth semester BE/BTech students. Data Communication and Networking is a great reference guide not only for course study but also for competitive exams.About the AuthorRajneesh Agrawal is working as senior scientist in the Department of information Technology under the Ministry of Communications and Information Technology. He is an MTech in Electronics from the University of Allahabad and is actively associated with academic and research activities. He has more than 22 years of experience in the area of electronics and information technology. His interest in the field of education, international cooperation, training, research and development have yielded many a successful projects ranging form process control automation to networking. He has written books titled, Multimedia Systems and Data Communication and Computer Networks. He has also produced a number of research papers.Table of ContentsIntroduction To Data Communication,Basic Concepts Of Data Communication And Networking,The OSI Model,Signals, Encoding And Modulation, Transmission Of Digital Data,Transmission Media, Multiplexing,Error Correction And Detection, Local Area Networks, Networking And Internetworking Devices, Upper OSI Layers