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Osi model

NETWORK TECH WORLD

 OSI Model

The OSI (Open Systems Interconnection) model is a framework used to understand how communication occurs between different devices on a network. It consists of seven layers, each of which has a specific function:

Physical: This layer deals with the physical aspects of communication, such as cables, switches, and routers.

Data Link: This layer is responsible for establishing a link between devices and providing error-free transmission of data across a network.

Network: This layer is responsible for routing data packets between devices on a network.

Transport: This layer provides end-to-end communication between devices, ensuring that data is delivered reliably and in the correct order.

Session: This layer establishes, maintains, and terminates connections between devices on a network.

Presentation: This layer is responsible for translating data into a format that can be understood by the application layer.

Application: This layer provides the interface between the network and the end user, allowing applications to send and receive data over the network.

Each layer communicates with the layer above and below it using a set of standardized protocols. This allows devices from different manufacturers to communicate with each other, as long as they adhere to the same standards.

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