TCP is providing data delivery services while being located in Transport layer of OSI and TCP/IP models. TCP requires established connection before the data transmission begin, so it is called connection -oriented subprotocol. TCP is ensuring connection is established before transmission.
Figure 1. A TCP segment
TCP is providing reliable data delivery with the help of sequencing and checksums. Without TCP data ...
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 ...
