Data Networking 101

This course provides a practical introduction to the foundational principles and concepts of modern data networking. From understanding the layered model of communications to learning how TCP/IP packets move through networks, this course builds the essential knowledge required to understand how today’s Internet and Ethernet-based networks actually operate.

Students will explore the core architecture of data communications, including packet switching, encapsulation, addressing, and the role of protocols within the TCP/IP stack. The course explains how the layered communications model allows devices, applications, and network infrastructure to work together to successfully exchange information across local and wide area networks. Key networking concepts are presented in a clear and understandable format designed to help students build a strong technical foundation.

Throughout the course, students will learn how data is segmented into packets, how packets are forwarded through switches and routers, and how Ethernet and TCP/IP technologies interact to transport information across interconnected networks. The course also introduces important networking concepts such as IP addressing, packet forwarding, protocol operations, and the relationship between Layer 1, Layer 2, Layer 3, and higher-layer services.

Whether you are new to networking, preparing for technical certifications, supporting broadband or enterprise environments, or seeking a stronger understanding of how modern packet networks function, this course provides a solid foundation in data networking fundamentals. By the end of the course, students will have a much clearer understanding of the technologies and protocols that enable communication across the Internet and modern digital networks.