This book starts with a detailed account on network models, thus providing the user with an ideal introduction on data transmission. The protocols and standards, as well as the physical structures of the networks are also discussed extensively here. The Data Communications And Networking follows a descriptive pattern, thus engaging users of all kind.A number of diagrams and tabular representations are also included in the book, thus making it more useful for the reader. The much discussed OSI model is also explained extensively with special emphasis on its layered architecture. Further, there are also chapters on bandwidth utilization with multiplexing and spreading.Follows Visual approach which gives the reader the opportunity to understand the networking concept with real-life application orientation.Coverage of encryption, security and synchronization in multi-processor systems is included with up-to-date information in the field.Demonstrate key issues concerning concepts and techniques through examples.