Layer 5 - The Session Layer
Written on 9:32 AM by ooe
7 Application
6 Presentation
5 Session<== This layer establishes, manages, and terminates sessions between two communicating hosts. Creates Virtual Circuit Coordinates communication between systems Organize their communication by offering three different modes Simplex Half Duplex Full Duplex Example:
- Client Software
PDU - Formatted Data
4 Transport
3 Network
2 Data Link
1 Physical
Exam Watch The session layer is responsible for setting up and tearing down network connections. Examples include RPCs and NFS.
The actual mechanics of this process, however, are implemented at the transport layer. To set up connections or tear down connections, the session layer communicates with the transport layer. Remote Procedure Call (RPC) is an example of an IP session protocol; the Network File System (NFS), which uses RPC, is an example application at this layer.
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