Computer network helps in sharing of data, files and other types of information. It is applied in numerous machines such as fax machines, printers, etc. Computer networks have changed the way businesses work. The most commonly used computer network is the Internet. This book contains some path-breaking studies in the field of computer networks. Also included in this book is a detailed explanation of the various concepts and applications of the subject. For all those who are interested in computer networks, this book can prove to be an essential guide.