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What is the layers name of the Open Systems Interconnection (OSI) model.


1. Physical layer – Deals with physical attachment to communications lines.

2. Data link layer –  Provides transfer and control of data over communications lines, error correction, etc.

3. Network layer –  Adds destination switching, routing, and relaying functions and presents them independently of the network in use.

4. Transport layer – Provides user-to-user services, including multiplexing, to make the most effective use of network facilities. It enhances the quality of service.

5. Session layer – Controls the dialogue between users and supports synchronisation of their activity.

6. Presentation layer –  Allows for the selection of the representation of data, resolving differences between systems.

7. Application layer –  Provides the interface to user applications and common services, such as file transfer and terminal support.