Preface
The network is everywhere. At the office, machines are wired together into local area networks, and the local networks are interconnected via the Internet. At home, personal computers are intermittently connected to the Internet or, increasingly, via "always-on" cable and DSL modems. New wireless technologies, such as Bluetooth, promise to vastly expand the network realm, embracing everything from cell phones to kitchen appliances.
Such an environment creates tremendous opportunities for innovation. Whole new classes of applications are now predicated on the availability of high-bandwidth, always-on connectivity. Interactive games allow players from around the globe to compete on virtual playing fields and the instant messaging protocols ...
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