1.Abstract
This article explains the meaning of domain names and the differences between them. It is intended for beginners who are just starting to build websites and learn about networking, so that they can correctly understand domain names, enter domain names, register domain names themselves, and ensure the security of their own websites.
2. Core suffix
2.1 .COM
.COM (commercial) is currently the most common file extension on the internet. It is the preferred extension for various websites and businesses, and is the most popular and trusted extension, often used in business.
2.2 .NET
.NET (NETWORK) is the most common file extension besides .com, and it is the preferred file extension for server vendors and technology websites.
2.3 Relationship
Both file extensions can be registered and used; if .com is already registered, .net can also be used.
2.4 Other file extensions
2.4.1 Common Domain Names
.org: (Organization), commonly used for communities and non-profit projects.
.edu: (Education), learning institutions.
.gov: (Government agencies).
2.4.2 Country suffix
For example: .cn China .hk Hong Kong China .tw Taiwan China
3. Website prefix (www.)
Meaning: www. is a subdomain that stands for World Wide Web, providing services to websites.
Redirection: Currently, users can directly redirect from example.com to www.example.com. The two can coexist without conflict.
4. HTTP (Hypertext Transfer Protocol)
Meaning: Hypertext Transfer Protocol (HTTP) is a transmission protocol between the client and the server, representing the basic communication rules.
4.1 HTTPS
Adding an "S" to HTTP results in HTTPS (Hypertext Transfer Protocol Secure), which uses an encryption layer and SSL/TLSS certificates for encryption.
Affect:
Real website.
Information on the website is encrypted.
It can protect data integrity.
5. Full URL
Complete: https://www.example.com/net example.com/net → www.example.com/net → https://www.example.com/net
6. Summary
Next, I will summarize the above information and present it to you in a table format.