TCP/IP model has been developed much later after OSI model. OSI was developed as theoretical model, while TCP/IP was more practical. TCP/IP is having just four layers in oppose to seven layers of OSI. All the layers are roughly corresponding to the osi model as shown in Figure 1.
Figure 1. The TCP/IP model compared with the OSI model
Application layer is ...
TCP/IP (Transmission Control Protocol / Internet Protocol is a package of network protocols that include TCP, IP, UDP, ARP and others. These are called subprotocols. When someone say TCP/IP they most likely refer to the whole group.
It has been developed for Advanced Research Projects Agency Network (ARPANet) by US Department of Defence. Later it has been adopted by other network ...
