Data Communications and Network Technologies

This book is a basic data communications textbook, positioned as a computer network textbook for undergraduate colleges and universities. The data communications, knowledge, and network cases in the book are designed for the application of computer network theories, and readers can take the HuaWei Certified ICT Associate (HCIA) certification after learning it. This book is suitable for students of network engineering and software engineering in colleges and universities; for employees engaged in IT operation and maintenance, network security, software development, and software testing; for graduate students in computer science; and for students and employees who have passed Huawei HCIA.