Osi Model Questions Medium
The Session layer protocols in the OSI Model are responsible for establishing, managing, and terminating communication sessions between two network devices. This layer ensures that the data exchange between the devices is organized and synchronized.
The main role of the Session layer protocols is to establish a session or connection between the source and destination devices before data transmission begins. This involves the negotiation and synchronization of session parameters such as session identification, security credentials, and session timeout values.
Once the session is established, the Session layer protocols manage the ongoing communication by coordinating the flow of data between the devices. This includes segmenting the data into smaller units for transmission, ensuring the data is delivered in the correct order, and handling any errors or retransmissions that may occur.
Additionally, the Session layer protocols provide mechanisms for session checkpointing and recovery. This allows for the resumption of interrupted sessions or the reestablishment of lost connections without having to start the communication from the beginning.
Furthermore, the Session layer protocols handle session termination by ensuring that both devices are properly notified and that any resources allocated for the session are released. This ensures the efficient use of network resources and allows for the establishment of new sessions in the future.
Overall, the Session layer protocols play a crucial role in managing the communication sessions between network devices, ensuring reliable and orderly data exchange, and providing mechanisms for session establishment, maintenance, and termination.