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Thursday, July 19, 2012

Session layer Functions and Services

Functions and Services,


  • Partitioning of services into functional groups
  • Acknowledgements of data received during a session
  • Virtual connection between application entities
  • Authentication
  • Session restoration (check pointing and recovery)
  • Three way handshake
  • Multiplexing
  • Virtual circuit management
  • Error checking and recovery flow control 
  • Synchronization of data flow
  • Creation of dialog units
  • Connection parameter negotiations
  • Establishing connections
  • Maintaining connections
  • Synchronizing communications
  • Controlling dialogues
  • Terminating connections
  • Retransmission of data if it is not received by a device
  • Name service for name registration and resolution
  • Session service for Connection Oriented Communication
  • Datagram distribution service for connectionless communication.


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