Computer Networks and the Internet is arguably the Today's Internet Ever largest engineered system created by Mankind, with Hundreds of Millions of connected computers, communication links, and switches; with billions of users who connect via laptops, tablets, and smartphones; and with an array of new Internet-connected devices như sensors, Web cams, game consoles, picture frames, washing machines and even level. Given là Internet is so large and has so many components and dùng DIVERSE, is there any hope of understanding how it works? Guiding Principles and structure Are there pro- vide a foundation can có understanding for an amazingly large and complex vd system? And if so, is it possible The có Actually it could be interesting and fun to learn both Show about computer networks? Fortunately, the answers to all questions presented is a resounding những of YES! Indeed, it's our aim in this book to cung you with a modern introduction to the dynamic field of computer networking, giving you the Principles and practical insights you'll need to hiểu not only today's networks, but tomorrow's as well. This first chapter presents a broad overview of computer networking and the Internet. Our goal here is to paint a broad picture and set the context for the rest of this book, to see the forest through the trees. We'll cover a lot of ground in this intro- ductory chapter and a lot of the pieces Discuss of a computer network, without los- ing sight of the big picture.
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