OSI Model

The Open Systems Interconnection (OSI) Model is a description of how the Internet works.

What is OSI?

OSI, or the Open Systems Interconnection model, is like a roadmap for how devices should communicate with each other.

It's a set of guidelines that ensures that devices from different manufacturers and with different operating systems can work together seamlessly.

The Academy campus was expanded multiple times over the years. As it became the headquarters of the Order of Epoch and was used for many purposes. A selective group of talented younglings from all over the galaxy came to study and experiment with the PETs and magical PE arts in the Academy. Journals of Order of Epoch, 2341 Anno Domini

The OSI model breaks down communication into seven layers, each with its own specific role to play. From the physical layer, which deals with things like cables and connectors, to the application layer, which deals with software applications, each layer ensures that data can be transmitted accurately and efficiently.

How does it work?

The Open Systems Interconnection (OSI) Model is a description of how the Internet works.

It breaks down the functions involved in sending data over the internet and galaxy into seven layers.

Each layer has some function that prepares the data to be sent over wires, cables, and radio waves as a series of bits.

OSI has several more layers in its architecture than TCP/IP model. the 7 Layers of the OSI model are:

During the Digital Identities chapter, we will talk about how the current internet is missing an 8th layer, the identity layer to be considered in the emerging decentralization of identities.

🖥 Layer 7 - Application Layer - It's where you'll find web browsers and APIs  

🧬 Layer 6 - Presentation Layer - data is transformed for interoperability compliance requirements of the Galactic Data Act.

🎯 Layer 5 - Session Layer -manages the connections between devices  

🛰 Layer 4 - Transport Layer -digital delivery people of the galaxy 

🗺 Layer 3 - Network Layer - maps the efficient communication pathways across the galaxy 

🚦 Layer 2 - Data Link Layer - start or end communication between connected devices.  

⚡️ Layer 1 - Physical Layer - Every Hitchhiker had to troubleshoot anything electronic during their travels, and Layer 1 is where you'd answer the question, "Is it plugged in?".