About the Book: Data Communication and Computer Networks provides a comprehensive introduction to the fundamental concepts, technologies, and applications that form the backbone of modern communication systems. The book begins with the basics of data transmission, encoding, and error detection, before moving into detailed discussions on network topologies, protocols, switching techniques, and layered architectures such as the OSI and TCP/IP models. It highlights both theoretical foundations and practical applications, making it suitable for students, educators, and professionals. Special emphasis is given to emerging trends, including wireless communication, cloud networking, cybersecurity, and the role of data communication in the Internet of Things (IoT). Each chapter is designed with clear explanations, illustrations, and real-world examples to simplify complex concepts. By blending fundamentals with advanced topics, this book serves as a reliable guide for building a strong understanding of computer networks and preparing readers for academic, research, or industry pursuits.

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