OSI Model Layers

The OSI (Open Systems Interconnection) model is a conceptual framework used to describe the functions of a networking system. Explore each layer to understand its role in network communication.

Interactive OSI Model

Layer 7Application
Layer 6Presentation
Layer 5Session
Layer 4Transport
Layer 3Network
Layer 2Data Link
Layer 1Physical

Layer Overview

Layer 1: Physical

Deals with the physical connection between devices.

Layer 2: Data Link

Handles error-free transfer of data frames.

Layer 3: Network

Manages addressing, routing, and traffic control.

Layer 4: Transport

Ensures complete data transfer and quality of service.

Layer 5: Session

Establishes, manages, and terminates sessions.

Layer 6: Presentation

Translates, encrypts, and compresses data.

Layer 7: Application

Provides network services to end-user applications.