What are the most basic services that the Internet can provide?

The most basic services that the Internet can provide are: 1. WWW service; 2. Email E-mail service; 3. Remote login Telnet service; 4. File transfer FTP service; 5. Usenet network news group service ; 6. Electronic bulletin board service.

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

The Internet is a collection of global information resources. There is a rough saying that INTERNET is a logical network formed by the interconnection of many small networks (subnets), and each subnet is connected to several computers (hosts). The Internet aims to exchange information resources with each other, is based on some common protocols, and is formed through many routers and the public Internet. It is a collection of information resources and resource sharing.

The most basic services provided by the Internet

1. WWW service

WWW(World Wide Web) service is a method of browsing and querying Internet information based on hypertext. It interactively queries and accesses information stored on remote computers, and provides a single and consistent access mechanism for various Internet browsing and retrieval accesses. . Web pages combine text, hypermedia, graphics, and sound. The Internet brings convenient conditions for enterprises to communicate and obtain information resources.

2. E-mail E-mail service

E-mail is a communication method that uses electronic means to provide information exchange. It is the most widely used service on the Internet. Through the network's email system, users can send emails at a very low price (no matter where they are sent, they only have to pay the network fee) and in a very fast way (it can be sent to any designated destination in the world within a few seconds). Connect with Internet users anywhere in the world.

3. Remote login Telnet service

The remote login service is also called the Telnet service. It is one of the earliest service functions provided on the Internet and many people are still using it. This service function.

Telnet is a protocol for Internet remote login services. This protocol defines how remote login users interact with the server. Telnet allows users to log into a remote time-sharing system on a networked computer and then use the remote system as if they were their own computer.

To use the remote login service, you must start a client application on the local computer, specify the name of the remote computer, and establish a connection with it through the Internet. Once the connection is successful, the local computer acts like a normal terminal and directly accesses the resources of the remote computer system. Remote login software allows users to interact directly with remote computers through keyboard or mouse operations. The client application sends relevant information to the remote computer, and the server returns the output results to the user. After the user logs out remotely, the user's keyboard and display control rights return to the local computer. General users can log in remotely through the Windows Telnet client program.

4. File transfer FTP service

The text transfer service is also called the FTP service. It is one of the earliest service functions provided on the Internet and is still widely used.

FTP (File Transfer Protocol) protocol is the basis for file transfer on the Internet. What is commonly known as FTP is a service based on this protocol. The FTP file transfer service allows users on the Internet to transfer files from one computer to another. Almost all types of files, including text files, binary executable files, sound files, image files, data compression files, etc., can be transferred to another computer. Can be transferred using FTP.

FTP is actually a set of file transfer service software. It uses file transfer as the interface and uses simple get or put commands to download or upload files, just like executing file copy commands on the Internet. Most FTP server hosts use Unix operating systems, but ordinary users can also use FTP easily through Windows 95 or Windows 98.

The biggest feature of FTP is that users can use numerous anonymous FTP servers on the Internet. The so-called anonymous server refers to a system that can be entered without a special user name and password. When users connect to an anonymous FTP server, they can use "anonymous" as the username and their own email address as the password to log in. After successful login, the user can download files from the anonymous server. The standard directory of the anonymous server is pub, and users can usually access files in all subdirectories under this directory. Due to security concerns, most anonymous servers do not allow users to upload files.

5. Usenet Internet News Group Service

Usenet is a collection of various topic discussion groups organized by many users with similar interests. It is also often referred to as a global bulletin board system (BBS). Usenet is used to publish announcements, news, comments and various articles for online users to use and discuss. The discussion content is organized according to different topic categories. Each category is a topic group, called a news group, and more subtopics can be divided within it.

Each news on Usenet is guided by a tag that distinguishes the type. Each news group revolves around a theme, such as comp. (computer content), news. (news and information on Usenet itself), rec. (sports) , arts and entertainment activities), sci. (scientific branches), soc. (social issues), talk. (discussions and exchanges), misc. (other miscellaneous topics), biz. (business issues), etc.

In addition to choosing to participate in the topic groups of interest, users can also open new topic groups themselves. As long as there are people participating, the topic group can continue to exist; if no one participates for a period of time, the topic group will be automatically deleted.

6. Electronic Bulletin Board Service

BBS (Bulletin Board Service) is an electronic information service system on the Internet. It is a popular contemporary means of communication for individuals and groups. Today, BBS has formed a unique online culture. Netizens can freely express their thoughts and ideas through BBS.

BBS is actually a kind of website. From a technical point of view, an electronic bulletin board is actually a public information storage area set up in a computer on the network in a distributed information processing system. Any legal user can access information in this storage area through the Internet or LAN. Early BBSs could only provide text-only forum services. BBSs could also provide email, FTP, newsgroups and other services.

BBS is divided into multiple columns according to different themes. The division of columns is based on the needs and preferences of most BBS users. The usage rights of BBS are divided into browsing, posting, sending emails, sending files and chatting. Almost any Internet user has the right to browse freely, and only formally registered users can enjoy other services.

The biggest difference between the communication characteristics of BBS and the Internet is that, as its name describes, it is a "bulletin board", that is, the vast majority of emails running on BBS sites are public letters.

Therefore, users will be faced with almost all the information on the site. China's Internet was first developed from universities and scientific research institutions. Universities generally set up campus networks. Therefore, students and teachers have naturally become the largest user groups of BBS.

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