Related introduction:

1、WWW：

Is a huge collection of documents stored in Internet computers. These documents are called pages, which are Hypertext information and can be used to describe hypermedia. Multimedia such as text, graphics, video and audio is called Hypermedia.

2、COM：

Com is the abbreviation of commercial, which indicates the original intention of registering this domain name by a commercial organization.

2、CN：

Represents the national domain name of China. It is officially registered and operated by China Internet Information Center (Inter NIC). The. CN domain name is the only English international top-level domain name managed by China in the world. It is the Internet logo of China enterprises, which embodies a cultural identity, its own value and positioning.

Extended data

Because IP address is inconvenient to remember and can't display the name and nature of the address organization, people have designed domain names, and mapped domain names and IP addresses to each other through the Domain Name System (DNS), which makes it easier for people to access the Internet without remembering the number of IP addresses that can be directly read by machines.

1993 WWW protocol appeared on the Internet, and domain names began to attract attention. 1993 Network Solutions(NSI) signed a five-year contract with the U.S. government to exclusively represent the registration rights of three international top-level domain names:. COM,. ORG and. NET. At that time, the total number of domain names was only about 7000.

CCTV-CCTV official website

Baidu encyclopedia -www

Baidu encyclopedia -.COM domain name

Baidu encyclopedia -.CN