This book is an elementary approach for school and college students. The book provides an introductory knowledge on data communication and computer network.
It covers all the basic and necessary topics, technologies, concepts and devices required to study a data communication network. It is designed to serve a text to the beginners in the field of network and data communication. It covers topics viz. OSI model, connectivity, contention methods, switching, routing, satellite network, telephone network, IP addressing fault tolerance.
It also coves abbreviations and essential definitions which are very useful to all students, pursuing their study in the field of computer education.