TCP / IP protocol layers effect
- Application layer
The application layer determines the activities of providing communication services to users.
TCP / IP protocol suite stored in a variety of common application services. For example, FTP (File Transfer Protocol) and DNS (Domain Name System) service is one of two types of
HTTP protocol also belong to this layer - Transport Layer
Transport upper application layer, data transmission is provided between the two computers in a network connection.
In a different transport layer protocols of two properties: TCP (Transmission Control Protocol) and UDP (User Datagram Protocol) - Network layer
Network layer to process the data packet on the network flow. Packet is a minimum data unit transmission network. Reach each other by a predetermined kind of route computer (so-called transmission line), and transmits the data packets to each other.
When transmitted over multiple computers or other computer network between devices, the network layer is to choose the role of a transmission path in many options. Link layer
Hardware processing section is connected to the network. It comprises a control operating system, the hardware device driver, the NIC (network adapter, i.e. NIC), the visible portion of the fiber-optic and other physical (and all further comprising a transmission medium connector).
It is visible on the hardware within the scope of the link layer.TCP / IP communications transport stream
- When network communication using TCP / IP protocol family, it will be communicated with each other through a hierarchical order. Go down from the transmitting side application layer, the link layer from the receiving end to go up.
- When transmission data is transmitted between the terminal layers, each layer passes must be marked with a header information of the layer belongs. Conversely, when the receiving end of the transmission data layers, it will be erased when the corresponding header passes per layer
This information is packaged data package becomes practice.