The book "Methodological instructions and control task on the discipline Network technologies of high-speed data transmission", created by the team of authors, is a unique resource for students, graduate students and specialists in the field of information technology and network communications . This work not only serves as a tutorial, but also as a practical guide that will help readers to better understand modern network technologies and their application in real-world conditions. With the rapid development of technology and the constant increase in the amount of transmitted information, knowledge of the basics of high-speed data transmission becomes necessary for everyone who wants to be one step ahead in their professional activities. The book covers a wide range of topics, ranging from the basics of network technologies to more complex concepts such as network architecture, data transfer protocols, and methods for optimizing network solutions. The reader will be able to learn about the latest achievements in the field of network technologies, as well as how these achievements affect everyday life and business processes. This book will be especially useful for technical students, graduate students and young professionals who seek to deepen their knowledge in the field of network technologies. It can also be of interest to teachers and researchers working in this field, as it contains current methodological guidelines and control tasks that can be used in the educational process. The book is suitable for readers aged 18 to 35 who already have basic knowledge in the field of information technology and want to expand their horizons. The topics raised in the book cover not only technical aspects, but also broader issues such as the impact of technology on society, data security, and the ethical aspects of using high-speed networks. These questions are becoming increasingly relevant in today's world, where information plays a key role in everyone's life. The book offers the reader not only theoretical knowledge, but also practical tasks that will help to consolidate the material and apply it in practice. The style of the authors is characterized by accessibility and clarity of presentation, which makes complex concepts understandable even for beginners. The team of authors includes specialists with extensive experience in the field of network technologies, which gives the book additional value. Their previous works have already established themselves as reliable sources of information, and this publication is no exception. Readers familiar with their other works can expect the same high level of quality and relevance. The book “Methodological instructions and control task on the discipline of Network technologies of high-speed data transmission” will become an indispensable assistant for anyone who wants not only to master the theory, but also to learn how to apply their knowledge in practice. It will help readers not only to prepare for exams and test papers, but also to become more confident in their knowledge and skills in the field of network technologies. If you are looking for a quality tutorial that combines theory and practice, this publication should definitely take a place on your shelf.