Introduction to Computer Networks

This lesson introduces what a computer network is, why networks exist, and how connected devices share information and resources. Learners will distinguish between common network types, understand the basic roles of clients, servers, and network devices, and see how data moves across a network in practical terms. The goal is to build a clear foundation before moving into hardware, addressing, and network setup in later lessons.

By the end of the lesson, learners should be able to explain networking using plain language, identify the main parts of a network, and recognize the difference between local and wider network connections.