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|a We don' t live in the same world that existed when the previous edition was published, and this new edition reflects these changes. Although much of this book's content has changed, its purpose is still fundamentally the same. It is designed for junior-level students in a computer science program who have a minimum of two semesters of software design and a knowledge of precalculus and discrete mathemathics. This book covers standard topics found in a typical introductory course in data communications and computer networks, such as transmission media, analog and digital signals, data transmissions, compression and encryption methods, network topologies, network security, LAN protocols, Internet-based protocols and applications, circuit-switching technologies, and Web applications.
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