The difference and connection between local area network and Internet

The difference between local area network and the Internet: 1. A local area network is a computer group composed of multiple computers interconnected in a certain area; 2. The Internet is an international computer network composed of a wide area network, a local area network and a single computer according to a communication protocol. The Internet is composed of countless local area networks that are aggregated to operators through WAN lines, and then the operators are interconnected to form the Internet.

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

The difference and connection between local area network and the Internet

Local Area Network (LAN), referred to as LAN, refers to a computer composed of multiple computers interconnected in a certain area Group. "A certain area" refers to the same office, the same building, the same company, the same school, etc., generally within a few kilometers. LAN can realize functions such as file management, application software sharing, printer sharing, scanner sharing, scheduling within work groups, email and fax communication services, etc. A local area network is closed and can consist of two computers in an office or thousands of computers in a company.

A local area network is like a group of people living in a large courtyard who can perform common activities together.

The Internet is an international computer network composed of wide area networks, local area networks and stand-alone computers according to certain communication protocols. The Internet refers to the result of connecting two computers or more than two computer terminals, clients, and servers through computer information technology. People can send emails to each other and complete tasks together with friends thousands of miles away. Work and have fun together.

If a local area network is a stream, many streams will converge into a large trunk stream, such as the Yangtze River and the Yellow River. The trunk stream is the wide area network, and then flows into the sea, and the sea is the Internet.

The Internet is composed of countless local area networks that are aggregated to operators through WAN lines, and then the operators are interconnected to form the Internet. The Internet is open and interconnected. If the LAN of a company or institution is not connected to the Internet, then this LAN does not belong to the Internet. The concepts of company LAN, WAN, and Internet. LAN and Internet are the same as the above concepts. It is just that the company LAN adds some switches, APs, and firewalls. There is no substantial difference from the home LAN.

For more related knowledge, please visit the FAQ column!

The above is the detailed content of The difference and connection between local area network and Internet. For more information, please follow other related articles on the PHP Chinese website!