Hello this is vijay.. its right that TCP has 4 layers only
but u know OSI is the extended on, comes after TCP/Ip suite.
this suite was actually came into light after DOD model . It
is responsible as TCP defines from physical to transport
In OSI reference model, there are seven layers which are
Application layer, Presentation layer, Session layer,
Transport layer, Network layer, Datalink Layer, and
Physical layer. It is detailed model for the transfer of
information from one destination from other. While the TCP/
IP suite was somewhat compact, it was not as detailed.
HI I M PUSHPESH KR. VERMA ...........
THE BASIC DIFFERENCE B/W TCP/IP AND OSI MODEL IS THAT THE
TCP/IP MODEL DID NOT ORIGIANLLY CLEARLY DISTINGUISH BETWEEN
SERVICE, INTERFACE AND PROTOCOL, ALTHOUGH PEOPLE HAVE TRIED
TO RETROFIT IT AFTER THE FACT TO MAKE IT MORE OSI-LIKE.
THE SECOND ONE IS TCP/IP IS A PROTOCOL WHILE OSI IS A SET
OSI Model is there to explain about network in more easy
way out to those people who are new to network/networking.
In OSI model network is explained in a manner to get whole
picture of network to understand it in a rough manner but
7 layers, devices working in each layer, etc.
TCP/IP suite is for more deep study of network
working,means what rules are getting followed in network by
each and every devices, as explained by Protocols at each
4-5 layers(depends, many times datalink and physical layers
are shown separatly), layers are explained here with the
help of Protocols(set of some rules to follow).
i have buy a lap top and get a internet connection
when i see video on internet side or orkut etc.the cannot
play video on my computer why please suggested me to
download which software? i have window media player