Chapter 1: Understanding the OSI Model Through the Lens of a Delivery Company

The OSI (Open Systems Interconnection) model is a conceptual framework that standardizes the functions of a telecommunication or computing system into seven abstraction layers. To make this complex concept more relatable, let's compare it to something we all know: a delivery company like UPS or FedEx.

Imagine you want to send a package from New York to Los Angeles. Just like the OSI model, the delivery process can be broken down into different stages or "layers."