OSI model with examples

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Accepted Answer

The OSI model is a conceptual framework that standardizes the functions of a telecommunication or computing system into seven layers.

Layer 1 - Physical layer: Deals with physical connections and data transmission (e.g. Ethernet cables)
Layer 2 - Data link layer: Manages data transfer between devices on the same network (e.g. MAC addresses)
Layer 3 - Network layer: Handles routing and logical addressing (e.g. IP addresses)
Layer 4 - Transport layer: Ensures data integrity and reliability (e.g. TCP)
Layer 5 - Session layer: Establishes, maintains, and terminates connections (e.g. API calls)
Layer 6 - Presentation layer: Translates data into a format that the application layer can understand (e.g. encryption)
Layer 7 - Application layer: Provides interface for user applications (e.g. web browsers)

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