The OSI Model Explained: All 7 Layers Made Simple

The OSI Model can make networking seem complicated, but each of its seven layers has a different job. In this beginner-friendly explanation, I walk through all 7 layers of the OSI Model, from physical signals and Ethernet frames to IP addresses, TCP/UDP, application protocols, and more. We’ll cover: Layer 1 — Physical Layer 2 — Data Link Layer 3 — Network Layer 4 — Transport Layer 5 — Session Layer 6 — Presentation Layer 7 — Application Encapsulation and how data moves through the stack The OSI Model is a conceptual framework, so real-world protocol stacks don’t always map perfectly to all seven layers, but it’s an extremely useful way to understand and troubleshoot networking. Check me out on TikTok:   / tech_with_leo   #osimodel #cybersecurity #networking #technology #learntech #it #computerscience