Schaum's Outline of Computer Networking is intended for use as a problem-solved approach text in Networking courses taken in the third and fourth years in Computer Science, graduate course review, and for students getting Certification as Network Professionals. Networking courses are currently offered in almost all undergraduate and graduate computer science, computer information systems, and computer engineering curricula worldwide. Networking courses are also offered in non-traditional cross-disciplinary curricula, for example, E-Commerce and Telecommunications. In addition, many practitioners take networking courses to update their skills. The number of courses leading to certification in networking is witnessing an explosive growth. Titles of college courses that could use this book include: Computer Networks; Communications Networks; Networking Essentials; Computer Network Fundamentals; Computer Networks Architectures and Protocols; Internetworking; Local Area Networks; Wide Area Networks; Engineering Computer Networks Schaum's Outline of Computer Networking will introduce the underlying concepts, principles, and terminology of computer networks. This book will present the different components of a network and how these components fit together. It will also present the different harmonizing functions needed for the interconnection of many heterogeneous computer networks; and of course, it covers major network applications, such as electronic mail and the World Wide Web. Practical examples, laboratory experiments, and hands-on projects based on real-world scenarios will be sued throughout the book to reinforce the concepts and demonstrate various networking protocols.