What is TCP/IP?

The TCP/IP model also uses the modular approach but only contains 4 while the OSI model uses 7. The layers of the TCP/IP model have much more diverse tasks than the OSI model, considering that certain layers of the TCP/IP model are the same as several of the OSI model. The layers of the TCP/IP are NETWORK ACCESS LAYER – this specifies the form in which data must be routed whichever type of network is being used, the INTERNET LAYER – that is responsible for supplying the data packet or datagram, TRANSPORT LAYER – that provides the routing data along with the mechanisms making it possible to know the status of the transmission and finally the APPLICATION LAYER – this incorporates standard network applications such as telnet, SMTP, FTP etc.