Data and Computer Communications

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Focusing on the latest technology and presented in a modular format, this best-selling text provides a clear and comprehensive overview of the data and computer communications field. It emphasizes fundamental principles and the importance of performance in protocol and network design, covering key areas such as data communications, wide-area networking, local area networking, and protocol design. The modular structure allows instructors to tailor courses to their needs while making the subject more digestible for students. Key principles like multiplexing, flow control, and error control are consistently highlighted, showcasing their application across various technologies. The content is organized into several parts: 1. Overview of data communications, networking, and the Internet, including protocol architecture and data transmission techniques. 2. Wide area networks, discussing circuit and packet switching, routing, and cellular wireless networks. 3. Local area networks, covering high-speed and wireless LANs. 4. Internet and transport protocols, detailing internetwork protocols and transport mechanisms. 5. Internet applications, focusing on network security, electronic mail, directory services, and multimedia. This text serves as a comprehensive resource for understanding the critical aspects of data and computer communications.