The book “Local Computer Networks” by Sergey Vladimirovich Dubinin is a fascinating and in-depth study devoted to one of the most pressing topics in the field of information technology. With the rapid development of digital technologies and the widespread introduction of network solutions, understanding the principles of local area networks is becoming vital for specialists at various levels - from students to experienced IT professionals. In his book, Dubinin not only explains the basic concepts and principles of building local networks, but also immerses the reader in the world of technologies that make it possible to exchange data between devices. He shares his knowledge of various network topologies, data transfer protocols, and current trends in network security. The reader will be able to learn how to properly design and configure local networks so that they work efficiently and safely. The book will be especially interesting for students of technical specialties, graduate students and young professionals who want to deepen their knowledge in the field of network technologies. It can also attract the attention of system administrators and engineers who want to update their skills and get acquainted with the latest achievements in this field. Readers interested in network security will also find a lot of useful information in the book that will help them protect their networks from potential threats. The topics raised in the book cover a wide range of issues, from the basics of local area network design to their operation and maintenance. Dubinin emphasizes the importance of choosing the right equipment, as well as the need for regular monitoring and analysis of the state of the network. It also addresses the integration of local networks with global systems, making the book relevant for those working in the field of corporate information technology. The author's style is distinguished by clarity and accessibility of presentation, which allows the reader to easily perceive even the most complex technical aspects. Dubinin uses many examples from practice, which makes the material more clear and understandable. His approach to learning and explaining complex concepts allows the reader not only to assimilate information, but also to put it into practice. Sergey Vladimirovich Dubinin is a well-known specialist in the field of information technology, the author of many scientific works and teaching aids . His other well-known works, such as Networking Technologies: From Basics to Practice and Information Systems Security, have also earned recognition among professionals and students. In his books, he always strives to share current knowledge and experience, which makes his work indispensable for anyone who wants to be at the forefront of technology. If you are looking for a book that will help you understand the intricacies of local area networks, Dubinina’s Local Area Networks will be an excellent choice. It will not only expand your knowledge, but also inspire new achievements in the world of information technology. Do not miss the opportunity to immerse yourself in the fascinating world of network technologies and learn how they change our lives and work.