OSI Model Layers and Purposes

Provides services directly to end-users and applications, like email or file transfer.

Handles logical addressing, routing, and data packet forwarding.

Translates data between the application and network formats, ensuring proper encoding and encryption.

Deals with the physical transmission of data over network media.

Manages and controls communication sessions between computers.

Controls data framing, error detection, and medium access control.

Ensures reliable data transfer and error correction between hosts.