In this video, you’ll review and complete your understanding of the OSI model by bringing together all seven layers into one clear picture. The lesson revisits each layer—from the Physical Layer that transmits raw bits, up to the Application Layer where user interaction happens—and explains how they work together to enable reliable communication across networks.

You’ll also learn how data travels through the OSI stack using the process of encapsulation and de-encapsulation, showing how information is packaged, transmitted, and unpackaged at the destination. This final overview reinforces the purpose of each layer and highlights how the OSI model serves as a guideline for troubleshooting and understanding networking concepts.

By the end of this video, you will have a complete grasp of the OSI model as a whole, preparing you to connect its concepts with the practical TCP/IP model and apply this knowledge in real-world networking scenarios.