SESSION LAYER Meaning and
Definition
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The session layer, also known as the fifth layer of the OSI model or the sixth layer of the TCP/IP model, is responsible for establishing, maintaining, and terminating communication sessions between devices in a network.
The session layer ensures that reliable and orderly communication occurs between the different entities in a network session. It manages the establishment, synchronization, and termination of sessions by initiating the connection, negotiating the session's parameters, and managing any interruptions or failures that may occur during the session.
Within the session layer, communication sessions are established using session protocols such as NetBIOS, NFS, and SQL, which define how data is exchanged between devices. These protocols coordinate the exchange of data by establishing session identifiers, managing session tokens, and implementing mechanisms for synchronization and recovery in case of failures.
The session layer also provides services like session checkpointing, where the current state of the session is stored at certain intervals to allow for recovery in case of crashes or interruptions. It also supports session multiplexing and synchronization, allowing multiple sessions to be established simultaneously between the communicating devices.
In summary, the session layer facilitates reliable communication sessions by establishing, maintaining, and terminating sessions, ensuring data integrity, and providing mechanisms for recovery and synchronization.
Common Misspellings for SESSION LAYER
- aession layer
- zession layer
- xession layer
- dession layer
- eession layer
- wession layer
- swssion layer
- ssssion layer
- sdssion layer
- srssion layer
- s4ssion layer
- s3ssion layer
- seasion layer
- sezsion layer
- sexsion layer
- sedsion layer
- seesion layer
- sewsion layer
- sesaion layer
- seszion layer
Etymology of SESSION LAYER
The term "session layer" originates from the field of computer networking and the development of the OSI (Open Systems Interconnection) model. The OSI model was created in the late 1970s as a conceptual framework for understanding and implementing networking protocols.
The session layer is the fifth layer of the OSI model, responsible for managing and coordinating communication sessions between network devices. It ensures that data exchange between two devices is properly organized, controlled, and synchronized. The session layer establishes, maintains, and terminates connections between devices, providing services such as session establishment, session management, and session termination.
The term "session" refers to a logical connection between two communicating entities, allowing them to exchange information in a structured manner. It essentially defines a specific communication context or conversation between devices in a network.
The word "layer" in the context of the OSI model suggests a hierarchical arrangement or division of network functionality into different levels.
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