Osi Model Questions Medium
The Session layer protocols in the OSI Model are responsible for establishing, managing, and terminating sessions between two communicating devices. This layer ensures that the communication between the devices is reliable and error-free.
The main responsibilities of the Session layer protocols include:
1. Session establishment: The Session layer protocols are responsible for establishing a session between the source and destination devices. This involves initiating the session, negotiating the session parameters, and synchronizing the session state between the devices.
2. Session management: Once the session is established, the Session layer protocols manage the ongoing communication between the devices. This includes maintaining the session state, handling session timeouts, and managing session checkpoints for fault tolerance.
3. Session synchronization: The Session layer protocols ensure that the data exchanged between the devices is synchronized and in the correct order. They manage the flow control and sequencing of data packets to ensure reliable delivery.
4. Session termination: When the communication between the devices is complete, the Session layer protocols are responsible for terminating the session. This involves closing the session, releasing any allocated resources, and ensuring a clean termination of the session.
5. Session recovery: In case of any interruptions or failures during the session, the Session layer protocols handle session recovery. They provide mechanisms for re-establishing the session and recovering any lost or corrupted data.
Overall, the Session layer protocols play a crucial role in managing the sessions between communicating devices, ensuring reliable and orderly communication, and handling any issues that may arise during the session.