About TCP/IP

TCP IP is the communication protocol for communication between computers on the Internet. TCP IP stands for Transmission Control Protocol / Internet Protocol.

TCP IP defines how electronic devices (like computers) must be connected to the Internet, and how the data should be transmitted between them.

In the process of data transmission, there are some problems to be solved. First, the data must be sent to the right computer, according to its purpose, and the data must be in one piece with no damage (the damage of data can occur if there is signal interference from outside or are distant destination computer network).

Therefore there needs to be a mechanism that prevents the destruction of this data, and made some rules that cooperate with each other. A set of rules to govern the process of data transmission is referred to as data communication protocols. This protocol is implemented in the form of a computer program (software) contained on the computers and other communication equipment. TCP IP is a set of protocols designed to perform functions of communications data.

In the TCP IP standard there are several protocols for handling data communication:

• TCP (Transmission Control Protocol) communication between applications

• UDP (User Datagram Protocol) simple communication between applications

• IP (Internet Protocol) communications between computers

• ICMP (Internet Control Message Protocol) for errors and statistics

• DHCP (Dynamic Host Configuration Protocol) for dynamic addressing

Basically the data communication is the process of sending data on a computer network, that data is sent from one computer to another. in order to transmit data, the computer must be added a special tool, known as a network interface (network interface). This type of network interface varies, depending on the physical media used to transfer data.

The workings of the TCP IP

A set of TCP / IP protocol is modeled by four layers of TCP IP,

TCP IP layer consists of four layers of a stratified set of protocols.

The fourth layer is the TCP IP:

- Network Interface Layer, is responsible for sending and receiving data to and from physical media

- Internet Layer, is responsible for the delivery of the package to the correct address.

- Transport Layer, responsible for opening up communication between the two hosts / computers.

- Application Layer, this layer is all applications that use the TCP / IP link.

In the TCP IP, occurs submission of data from the protocol that is in one layer to the protocol that was in another layer. Each protocol treats the information it receives from other protocols as data.
So the basic concept and workings of TCP IP layer may provide an understanding of the notion of TCP IP.

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