What is the OSI Model?

Ever wondered how data actually moves across the internet? In this video, we break down the OSI Model in a simple, practical way—what each OSI layer does and why it matters. From the Physical Layer and Data Link Layer, up through the Network Layer, Session Layer, Presentation Layer, and the Application Layer, you’ll see how these networking concepts fit together. We’ll also clear up OSI vs TCP/IP, so you know when and why each model is used. ⌚️Timestamps 01:14 The 7 Layers of OSI 01:37 Physical Layer 01:55 Data Link Layer 02:09 Network Layer 02:21 Transport Layer 02:55 Session Layer 03:09 Presentation Layer 03:24 Application Layer 03:41 Help Remember The Seven Layers 03:48 Encapsulation and Decapsulation 04:26 OSI vs. TCP/IP