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Monday, 30 September 2013

OSI Layer and their function

   LAYERS                     FUNCTIONS                        DATA FORMAT             DEVICE USED

7 Application           Creating a data at user interface             File                             Computer

6 Presentation          Copressing ,encription                           File                            Computer

5 Session               i. Establish connection between
                                transmiter and receiver .                        N.A                          Computer
                             ii. Maintaning, controling,teminating
                                the communication

4 Transport            Identifying the relevant process or we       Segment                  Computer
                              can say: "Process-to-process "delivery.

3 Network             Identify relevant host or we can say         Data gram                 Router
                               "host-to-host" delivery .

2 Data link            Identifying relevant hardware.                   Frame                         Switch

1 Physical             Use for  establishing electrical link            Bits( 0 & 1 )     Hub,Cable,wires
                            between the each pair of devices.
                   

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