Basic Concepts of the WWW
Overview in One Image
As time goes by, we have completed most of our computer course studies, and some students have even finished and entered the review stage. Today, we will deepen our understanding of the basic concepts of the WWW and master the concepts and functions of HTTP, HTML, and URL in WWW services.
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The World Wide Web (also known as the Web, WWW, or the Internet) is an information service system on the Internet that integrates various media information such as text, sound, animation, and video. The entire system consists of three parts: web servers, browsers, and communication protocols. The communication protocol used by the WWW is the HyperText Transfer Protocol (HTTP), which can transmit any type of data object and is the main application layer protocol for publishing multimedia information on the Internet.
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The information resources in the WWW are mainly composed of individual web pages as the basic elements. All web pages are written in HyperText Markup Language (HTML), which describes the content, format, and hyperlinks within web pages. Web pages are interconnected using the format of HyperText. Through these links, one can jump from one web page to another, which is known as a hyperlink.
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Basic Concepts of the WWW: There are thousands of websites on the Internet, and to accurately locate them, people use a Uniform Resource Locator (URL) to uniquely identify a network resource worldwide.
The description format is: protocol://hostname/pathname/filename:port number
For example: http://www.hnzz.edu.cn, the client program first sees http (HyperText Transfer Protocol), indicating that it is processing an HTML connection. Next is the site address www.hnzz.edu.cn (corresponding to a specific IP address, resolved by DNS service), and the default TCP protocol port used by the HTTP protocol is 80, which can be omitted.
A few minutes of reading has allowed students to review relevant knowledge about the WWW. I believe that if students tackle related questions, they will not lose points. Your hard work is truly shining! Keep it up, students!
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