O.S.I MODEL

O.S.I

O.S.I : IT IS ALSO KNOWN AS “ OPEN SYSTEM INTERFACE ” OR INTERCONNECTION.

• I.S.O : INTERNATIONAL STANDARD ORGANIZATION.

• THIS LAYER DEVELOPED IN 1982 IN “ ZENEVA ”.

• 7 LAYERS ARE AVAILBLE IN O.S.I.

      COMPUTER 1                                                       COMPUTER 2

1. APPLICATION                                                1.     PHYSICAL                             

2. PRESENTATION B                                         2.     DATA LINK

3. SESSION                                                         3.    NETWORK

4. TRANSPORT                                                  4.   TRANSPORT

5. NETWORK                                                    5.    SESION

6. DATA LINK                                                  6.     PRESENTATION

7. PHYSICAL                                                    7.     APPLICATION


NOTE : - COMPUTER 1 IS SENDING DATA FROM TOP TO BOTTOM AND COMPUTER 2 IS RECEIVING DATA FROM
DOWN TO UP IN THE REVERSE ORDER