internet is called Internet or something in China

internet is called the Internet or the International Internet in China. The Internet is a collection of global information resources. It is a global network connected by computers that use a common language to communicate with each other. Once you connect to any of its nodes, it means that your computer has been connected to the Internet.

The operating environment of this tutorial: Windows 10 system, Dell G3 computer.

The International Internet, also known as the Internet, is currently the largest computer Internet network in the world. It is a global network connected by computers that use a common language to communicate with each other. Once you are connected to it On any node, it means that your computer has been connected to the Internet.

The Internet began in the United States in 1969. It was first used for military connections by the US military under the agreement established by ARPA (Arpanet, US Defense Research Project Agency), and later used by the University of California, Los Angeles, Stanford University Graduate School, UCSB (University of California) and Utah in the southwestern United States. State University's four main computers are connected. This agreement was implemented by the BBN and MA of Cambridge University and came online in December 1969.

Another wide area network that promotes the development of the Internet is the NSF network. It was originally funded by the National Science Foundation and was designed to connect five supercomputer centers in the United States for more than 100 American universities to share their data. resource. The NSF network also uses TCP/IP protocol and is connected to the Internet.

Both the ARPA network and the NSF network originally served scientific research, and their main purpose is to provide users with valuable resources to share large mainframes. As the number of connected hosts increases, more and more people use the Internet as a tool for communication and exchange. Some companies have also launched commercial activities on the Internet. With the commercialization of the Internet, its huge potential in communications, information retrieval, customer service, etc. has been tapped, making the Internet a qualitative leap and eventually going global.

Network Core Protocol

The computer network is composed of many computers. To realize the transmission of data between computers in the network, two things must be done things, the data transmission destination address and measures to ensure rapid and reliable data transmission. This is because data is easily lost or mistransmitted during the transmission process. The Internet uses a specialized computer language (protocol) to ensure that data is transmitted safely and reliably. To reach the designated destination, this language is divided into two parts: TCP (Transmission Control Protocol) and IP (Internet Protocol).

Data transmission process of TCP/IP protocol: The communication method used by TCP/IP protocol is packet switching. The so-called packet switching simply means that data is divided into several segments during transmission. Each data segment is called a data packet. The basic transmission unit of the TCP/IP protocol is a data packet. The TCP/IP protocol mainly includes two main protocols, namely TCP protocol and IP protocol, these two protocols can be used in combination or with other protocols. They mainly complete the following functions during the data transmission process:

(1) First, the TCP protocol divides the data into several Data packets, write a sequence number on each data packet so that the receiving end can restore the data to its original format.

(2) The IP protocol writes the addresses of the sending host and the receiving host for each data packet. Once the source address and destination address are written, the data packet can transmit data on the physical network. The IP protocol also has the function of utilizing routing algorithms for routing selection.

(3) These data packets can be transmitted through different transmission paths (routing). Due to different paths and other reasons, order reversal, data loss, data distortion or even duplication may occur. These problems are handled by the TCP protocol, which has the function of checking and handling errors, and can also request the sending end to resend when necessary. In short, the IP protocol is responsible for the transmission of data, while the TCP protocol is responsible for the reliable transmission of data.

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