Saturday, 20 August 2016

Open System Interface.

OSI is acronym of Open System Interface.  Each layer has a specific function however each layer provide services to the layer above.  This model is developed by the International organization of Standardizationand.

                       internet_technologies_tutorial

Physical Layer:

  • Converting digital bits into electrical signal.
  • Activating, maintaining and deactivating the physical connection.
  • Deciding whether the connection is simplex

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