Osi Model Questions
The Session layer in the OSI Model is responsible for establishing, managing, and terminating sessions between applications. Its main functions include:
1. Session establishment: The Session layer sets up and coordinates communication sessions between two devices. It handles the negotiation and synchronization of session parameters, such as session identification, security, and synchronization points.
2. Session maintenance: Once a session is established, the Session layer ensures its continuity by managing and monitoring the ongoing communication. It handles session checkpoints, which allow for recovery in case of failures, and manages session timeouts and retransmissions.
3. Session termination: When a session is no longer needed, the Session layer terminates it properly. It ensures that all resources allocated for the session are released and that both devices are aware of the session termination.
4. Session synchronization: The Session layer provides mechanisms for synchronization between the sender and receiver. It allows for the orderly exchange of data, ensuring that data is delivered in the correct sequence and without duplication.
5. Session control: The Session layer enables control functions during a session, such as flow control, which regulates the amount of data sent between devices to prevent overwhelming the receiver.
Overall, the Session layer plays a crucial role in managing the communication sessions between applications, ensuring their establishment, maintenance, and termination, as well as providing synchronization and control mechanisms.