This book has a Conceptual to Practical approach, it is a complete and accessible guide that immerses the reader in the fascinating world of computer networks. This work not only provides a solid theoretical foundation, but also invites you to put what you learn into practice through exercises and labs that simulate real-life situations. Whether you are a student, an IT professional or just someone curious to understand how networks work, this document is designed for you. It has hands-on labs: Learn by doing. What makes this document really special are the hands-on labs. It's not just about theory; here you have the opportunity to apply what you learn in simulated environments. The labs cover topics such as configuring VLANs, implementing trunk links between switches, and configuring dynamic routing using protocols such as RIP (Routing Information Protocol). Each lab comes with detailed instructions, network topologies and configuration commands, making it easy to understand and implement the concepts.