What network does the internet come from?

Internet originated from "ARPAnet". The internet originated from the Pentagon in the United States. Its predecessor was the ARPAnet (Arpanet) developed under the auspices of the Advanced Research Projects Agency (ARPA) of the U.S. Department of Defense, which was mainly used by scientists to conduct computer networking experiments.

The operating environment of this tutorial: Windows 7 system, Dell G3 computer.

Internet originated from "ARPAnet".

The Internet is a collection of global information resources. There is a rough saying that INTERNET is a logical network formed by the interconnection of many small networks (subnets), and each subnet is connected to several computers (hosts). The Internet aims to exchange information resources with each other, is based on some common protocols, and is formed through many routers and the public Internet. It is a collection of information resources and resource sharing.

The Chinese translation of Internet is "Internet", which originated from the Pentagon in the United States. Its predecessor was the ARPAnet developed under the auspices of the Advanced Research Projects Agency (ARPA) of the U.S. Department of Defense.

In the late 1950s, we were in the midst of the Cold War. At that time, the U.S. military built a military network called "Arpa" by the Advanced Research Projects Agency (ARPA) of the U.S. Department of Defense so that when its computer network was attacked, even if part of the network was destroyed, the rest could still maintain communications. ARPAnet. ARPANET was officially launched in 1969. At that time, only four computers were connected for scientists to conduct computer networking experiments. This was the predecessor of the Internet.

By the 1970s, ARPAnet had dozens of computer networks, but each network could only communicate with computers within the network, and different computer networks still could not communicate with each other. To this end, ARPA has established a new research project to support relevant research in academia and industry. The main content of the research is to use a new method to interconnect different computer local area networks to form an "Internet." Researchers called it "internetwork", or "Internet" for short, and the term has been used ever since.

layer

The Internet originated in the United States and is now a supercomputer internet network that connects the world.

The Internet is divided into three levels: bottom network, middle layer network, and backbone network.

The bottom network is the university campus network or enterprise network, and

the middle layer network is the region. Networks and commercial networks, the highest level is the backbone network, which is generally invested and established by the state or large companies. Currently, ANSNET built by the Advanced Network Services (ANS) company in the United States is the backbone network of the Internet.

The reason why the Internet has developed so rapidly is mainly due to the following characteristics:

(1) It is a global computer interconnection network.

(2)It is a huge information material.

(3) The most important thing is that the Internet is a big family, with tens of millions of people participating and sharing the wealth (i.e. resources) created by humans themselves.

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