The book "Telecommunications and Networks" by Galkin V. A. and Grigorieva Yu . A. is an indispensable guide to the world of modern communication technologies, which will be a real find for students, specialists and everyone who is interested in this rapidly developing area. In a digital age where information is transmitted instantaneously and the world is becoming increasingly interconnected, understanding the fundamentals of telecommunications and network technology is becoming a necessity. The authors, with extensive experience in the field of telecommunications, offer readers a deep immersion in theory and practice, covering a wide range of topics - from the basics of data transmission to complex network architectures. The book begins with an introduction to the basic concepts and principles, which makes it accessible even to those who are just beginning to get acquainted with this topic. However, do not think that this is only a textbook for beginners . The depth of analysis and attention to detail make it useful for experienced professionals who want to update their knowledge or understand new trends. One of the key themes of the book is the evolution of telecommunication technologies and their impact on society. The authors consider how the development of networks has changed the ways of communication, business and even everyday life. In this context, the book raises important questions about data security, privacy, and the ethical aspects of technology use. These topics are especially relevant in light of recent events related to data breaches and cyberattacks, which makes reading the book not only informative, but also socially significant. Who can like this book? First, it will be an excellent resource for technical students studying telecommunications, information technology or computer science . Secondly, IT specialists, network administrators and engineers will find in it useful recommendations and practical advice that will help in their professional activities. Finally, the book will be of interest to anyone who wants to better understand how modern communication systems work and how they affect our lives. The style of the authors is distinguished by clarity and accessibility, which makes it easy to assimilate even the most complex concepts. Galkina V. A. and Grigoriev Yu. A. use many examples from real practice, which makes the material more lively and relevant. Their previous work has also been praised for its quality of presentation and practical focus, which confirms their status as experts in the field. The book "Telecommunications and Networks" is not just a textbook, but a whole world in which everyone who wants to be one step ahead in the world of technology should immerse themselves. It answers many questions that concern the modern reader: How do networks work? What technologies are at the heart of communication? How to ensure data security in the face of constantly growing threats? These and many other questions find their answers in the pages of the book. If you are looking for literature on topics related to telecommunications, networks, information technology, then “Telecommunications and networks” is what you need. Do not miss the opportunity to expand your knowledge and look at the world of technology from a new perspective. This book will be your reliable companion in the study of complex but fascinating aspects of the telecommunications sector.