TCP/IP Protocol Overviews

TCP / IP (Transmitsion Control Protocol / Internet Protocol) suite of protocols used to communicate over the Internet. The objective is to enable communication across the network from origin to destination. And can find the path to send data to them automatically. Although the way may be a network problem. Protocol still find another route to transmit data to the destination.

This protocol suite has been developed since 1960, which was first used in the ARPANET network, which later expanded to connect to the worldwide Internet network allows TCP / IP is widely recognized today.

TCP / IP communications with the intent of the standard following :

1. communicate between systems with different 
2. The ability to solve problems that occur in the network. For example, if the sender and receiver are still unbroken. But using a central node for helping send the damaged useless. Wireless communication range or some forsaken. Rules of this communication must be able to provide alternatives to continue to have communications automatically. 
3. Has the flexibility to have multiple types of data communication that is not the urgency of delivery such as data files. And to guarantee the urgency of information such as a real-time communications, and voice communications (Voice) and information (data).

 Hierarchy of protocols in the Internet is all only 4 floor

• Link layer can be compared with layer 1 and 2 in the OSI hierarchy architecture that is not directly related to the Internet. But is the connection to the Internet to send data within a network. This class of functions for sending data. Models because TCP / IP standards are not in the now very much Simply defined, that can send data to the network. Could not clearly identify the contents page. So it may raise the OSI architecture of both the first floor, including the right to prepare information before you send it to the distributor to the defined destination. Including preparation of Packet Header Control Software and Hardware system that is used in the delivery such as the Network card connect to and use Device Driver is responsible for the information. Wait for the framework of the information received. Take out the header information. And prepare information to send to the floor network.
• Internet Layer compared with layer 3, which is the Network Layer architecture Oaeas a vapor layer are responsible for sending data from beginning to end. The path for data to travel over the network using one network to another one till the end. Protocol used in this class is Internet Protocol or IP act like an envelope, identify the source and destination addresses. The postman has a letter sent through the Postal Department from various destinations in the area of the fish. On the envelope in the Internet protocol known as IP number, postal router is a search path to send the appropriate information to the distributor until the end.
• Transport layer compared with layer 4 in the structural layers of the OSI is responsible for controlling the transmission of data between two computers on consecutive The two may share the characteristics is The data service connection And service delivery data are not connected. And deliver information to the application information. Protocol used in this class include TCP, UDP, RTP.
• Application layer compared with layer 5 to 7 in the OSI architecture will cover services related to the security of encrypted connections between applications. Layers and use the application directly. The protocol on the floor will be designed for specific types of applications such as email programs use SMTP protocol for sending email using POP3 protocol for browsing and email, the web browser using HTTP protocol called for. See webpage.

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