Welcome to Data Communications and Networking 1 (NET1)!

This course introduces you to the essential concepts, technologies, and architectures that make modern computer networks possible. You will explore how data is transmitted from one device to another, how communication protocols enable interoperability, and how network infrastructures are designed, configured, and managed to support digital connectivity in the real world.

Throughout the semester, you will study the fundamentals of data communication—signals, transmission methods, and network topologies—as well as the core principles behind the OSI and TCP/IP models. You will also learn about key networking devices such as switches, routers, and servers, and gain hands-on experience in building and troubleshooting local area networks (LANs).

The course emphasizes both theory and practice. You will design and assemble network cables, implement peer-to-peer and VLAN configurations, and apply IP addressing and subnetting schemes. Through guided activities and simulations, you will understand not just how networks function, but why design choices matter in creating efficient, secure, and scalable systems.

By the end of this course, you will be able to identify and describe how each OSI layer supports communication, design and implement small-scale networks, analyze connectivity issues, and apply subnetting techniques to organize and manage network segments effectively—preparing you for advanced networking topics such as routing, switching, and network security.