How many layers are there in the OSI Model?

The OSI (Open Systems Interconnection) Model is a conceptual framework used to understand and implement networking protocols in seven distinct layers. This model helps standardize interactions between diverse networking systems and devices. The seven layers, from top to bottom, are:

1. Application Layer

2. Presentation Layer

3. Session Layer

4. Transport Layer

5. Network Layer

6. Data Link Layer

7. Physical Layer

Each layer has its own specific functions and interacts with the layers directly above and below it, creating a comprehensive approach to network communication. Understanding that there are seven layers is fundamental for networking professionals, as it guides the design, troubleshooting, and implementation of communication systems.