1. The structure of the domain name

Primary name or sub-domain, second-level domain name, top-level domain name

2. Domain cybersquatting

The act of preemptively registering a domain name in the name of the registrant before someone else registers it

3. Authority of Domain Name Management

The domain name management authority is used for domain name resolution, domain name forwarding and domain name trading, which is an important proof that the domain name is the owner of the domain name and is used to manage the domain name; the website background management authority refers to the background management, account and Password, with this password, you can update website information, download website content, etc., or an FTP account used to upload and download web pages; domain name management authority can obtain domain name registrant information and DNS server location through domain name registration information, thereby judging the domain name registrar and the domain owner. Domain management authority can add, remove, and modify subdomains under the domain name, and manage the IP points of the domain name.

4. Domain name resolution

Machines only recognize each other’s IP addresses. To make one-to-one correspondence between domain names and IP addresses, DNS resolution (domain name resolution service) must be used.

5. Dynamic IP address

Computers that access the Internet through Modem, Isdn, xDSL, etc. generally do not have a fixed IP address, but a temporary IP address is dynamically allocated by Isp and pulled into its network equipment.

6. Static IP address

A static IP address is a public IP address that is permanently assigned to a computer for a long time. Generally, only professional servers need to have a static IP address.

7. Domain Name Management System DNS

Domain Name Management System DNS means domain name resolution server. Its role in the Internet is to convert the domain name into an IP address that the network can recognize.

8. A record

A record is used to specify the IP address record corresponding to the host name (or domain name). Users can point the web server under this address to their own web server, and can also set the second-level domain name of the domain name.

9. MX records

A mail exchange record, a record of a domain name on a DNS server, tells which computer is responsible for processing mail for the system. MX records exist in the DNS file of a domain name and are used to point emails of a domain name to the corresponding mail server for processing.

10. CNAME records

CNAME record, usually called alias point. Here, you can define a host alias, for example, www.A.com to point to a host www.B.com. Then you can use www.A.com instead of visiting www.B.com. However, after successfully setting the CNAME record, it may be necessary to set the corresponding service policy rules on the host www.B.com to correspond to the domain name in order to realize the CNAME function.

11. The same resource location system URL

The URL is the address of the www page, which consists of the following parts from left to right: Internet resource type /scheme: indicates the tool used by the www client program to operate. For example: http:// indicates the www server, ftp:// indicates the FTP server, gopher:// indicates the Gopher server, and the server address /host: indicates the server and domain name where the www page is located. Port/port: Sometimes for access to some resources, the corresponding server port number needs to be given. path/path: indicates the location of certain resources on the server

The URL address format is arranged as: scheme://host:port/path

12. The URL points to the service

URL pointing is when you already have an existing web page and want to point the newly registered domain name to the existing web page, so as to save the trouble of re-establishing the web page

13. Email address at the end of the domain name

After applying for a domain name, you can set the mail MX record to point to the host of the corresponding mail server, and set up a set of mail service interfaces on the host, you can use the registered top-level domain name as the mail domain name to send and receive emails through the mail server interface.