The book contains valuable information in the field of Global networking. Experts in various industries, educational the networking field. The subject of computer networking is enormously complex, involving many concepts and technologies that are grouped together in an interactive manner. The basic emphasis of the book is to give an overall idea about networking and recent developments in it. Due to rapid growth in mobile telephone use, various satellite services, now the Wireless Internet are generating tremendous changes in telecommunication and networking. This book explores network technology and architecture used, network type, design approaches and applications in mobile computing. This book highlights how to protect the data from the network-based attacks. This book also speaks about the high-speed computing, which resolves the central problems that confront the network designers to support multimedia and real time traffic, the need to control congestion and the need to provide different level of quality of service to different applications.