From the course: Computer Architecture Essentials
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Layered communication protocols
From the course: Computer Architecture Essentials
Layered communication protocols
- [Instructor] Let's briefly talk about layered communication protocols. What you're looking at here is the OSI model, a framework that applies to protocols like ethernet, but not directly to others like USB, Bluetooth or PCIE. However, all these protocols share a similar layered approach to organize communication tasks. Each of these protocols relies on layers to manage complex communication with the lowest layers, handling physical transmission and the highest layers focused on abstract tasks closer to the application. At the bottom, the physical layer transmits raw bits over cables or wireless signals, while the top layers deal with how applications send and receive meaningful data. By standardizing functions at each layer, devices from different manufacturers can communicate seamlessly, making them interoperable. Because each layer is modular, they can be updated or replaced without affecting the others, ensuring that these protocols remain flexible and dependable. This layer…
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