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Module 1: Physical Layer & Data Communication

20172m

Write any two functions of the session layer in OSI model.

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Two functions of the OSI Session layer:

  1. Session establishment, maintenance and termination — sets up, manages, and gracefully closes a logical connection (session) between two communicating applications, coordinating dialogue in simplex, half-duplex, or full-duplex mode.

  2. Synchronization (checkpointing) — inserts checkpoints into a long stream of data so that, if a failure occurs, transmission can resume from the last checkpoint instead of restarting from scratch.

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