OSI reference model is coneceptutal framework for designing and implentiing
comunicattions proctocols in layered , modular fashion
it divedes into seven communication b.w different systems
A
P
S
T
N
D
P
application layer: resposible for providing user interfere
presentation layer :it is resposiable for converting data into format that can
application layer underestand
Session layer :It resposiable for establising ,maintaining ,terminiating sessionb/w
application
transport layer :It responsiable for provinding end to end communication services
Network layer :It responsiable for routing data packets b.w different system
Datalink layer:It responsiable for realable connection b.w physcial layer
Physical layer :It responsiable for transmitting raw bit over data communication
channel
