Explain all layers of the OSI model

Question

Accepted Answer

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

Physical Layer: Deals with physical connections and transmission of raw data over a physical medium (e.g. cables, wires)
Data Link Layer: Manages data transfer between devices on the same network (e.g. Ethernet switches)
Network Layer: Handles routing of data packets between different networks (e.g. routers)
Transport Layer: Ensures reliable data transfer between end systems (e.g. TCP)
Session Layer: Manages communication sessions between applications (e.g. establishing, maintaining, and terminating connections)
Presentation Layer: Translates data into a format that the application layer can understand (e.g. encryption, compression)
Application Layer: Provides network services directly to end-user applications (e.g. HTTP, FTP)

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