TCP IP Model

Every layer provides the basic information to the TCP/IP model because itrequires to move the data across the network. In this model every function istargetting to help specific layers to do its job. Every layer communicates securely with its adjacent layer. Programs that are running at the top of the layer does not need to know tasks that are delagated to the layers at the bottom of the network and same thing happens at the top layers. E.g asoftware program designed for the application layer only needs to understand how to request connection with the remoted host through the use of transport layer. Itdoes not need to understand how the bits are encoded in the physical layer.