The Session Layer, also known as Layer 5, is one of the seven layers in the OSI (Open Systems Interconnection) model. Positioned as the third layer from the bottom, the OSI model is a conceptual framework designed to standardize communication between different computer systems.
The primary role of the Session Layer is to establish, maintain, and terminate sessions between applications on different devices. This layer enables two applications on different devices to create a communication session for the exchange of data. The Session Layer ensures that data exchange occurs in an organized and synchronized manner.
Key functions of the Session Layer include:
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Session establishment and termination: It facilitates the setup, maintenance, and termination of communication sessions between applications.
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Synchronization: The Session Layer ensures that data transmission between the involved applications is synchronized to maintain consistency.
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Dialog control: It monitors and controls the dialogue between applications to ensure that data is transmitted in the correct order.
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Data management: The Session Layer allows for the management of data exchanged during a session, including error correction and recovery when needed.
In summary, the Session Layer is responsible for coordinating and managing communication sessions to ensure smooth and efficient data transmission between applications.
