最基本的网络常识简介，这个你真的可以了解，你真的值得了解，因为他们经常说，但是我们却常常如坠五里云雾，那样你就显得太菜了，作为21世纪的一代，我们需要了解，不管别人怎么样，我就是需要它。
什么是HTML?HTML（Hyper Text Mark-up Language ）即超文本标记语言，是 WWW 的描述语言，由 Tim Berners-lee提出。设计 HTML 语言的目的是为了能把存放在一台电脑中的文本或图形与另一台电脑中的文本或图形方便地联系在一起，形成有机的整体，人们不用考虑具体信息是在当前电脑上还是在网络的其它电脑上。这样，你只要使用鼠标在某一文档中点取一个图标，Internet就会马上转到与此图标相关的内容上去，而这些信息可能存放在网络的另一台电脑中。HTML text is descriptive text consisting of HTML commands, HTML commands can be illustrated text, graphics, animation, sound, tables, links and so on. HTML structure comprising a head (Head), the body (Body) two parts. Described header information required browser content body contains specific be described.
Internet is doing what? In today's world, computer information network made it possible to exchange a variety of information within the country and even around the world the country, the so-called "homes kept in the dark world affairs." In the current global computer information network, the most successful and coverage of the largest and most abundant information resources undoubtedly the Internet. Internet is considered to be the prototype of the future of the global information highway.
E-mail feature on the Internet, you can receive and send e-mail, these messages can be a letter, the content of a paper, a business card, or data and software programs. Use Telnet and FTP functions on the Internet, but also directly use the remote host computer software system, as well as a wealth of information resources. For the subject of scientific research, papers, books and magazines library science image text information, you can use WAIS, Archie, Veronica, Jughead and other tools, according to the keyword query, the query and retrieve them.
Gopher use interactive search tools, WWW WAN hypermedia information obtaining tool, Netscape Navigator, Internet Explorer, Mosaic , I-Comm, Lynx and other resources browsing tools, making it easier and more vividly obtain and browse information resources. By USENET News Group network on the Internet, we can also see the people around the world record, global weather forecasts, news reports of major world sporting events and all types of advertising. Talk Internet network, IRC functions, provide us the opportunity to chat live with a friend at the other end of the earth at any time.
In the United States, we are using the Internet network synchronization of sound and image transfer test, which indicates that electronic meetings will be possible. By means of multimedia technology, Internet network users can watch and listen to movies from around the world network, image data and audio data. Internet, Chinese authorities put it translated as "Internet", some people call it "international network", "interactive network", it was also called "Internet network", "network of networks." Internet is not E-mail, WWW browser, or it represents the development of the global information industry, which is the standard network Esperanto.
What is TCP / IP? TCP / IP (Transmission Control Protocol / Internet Protocol) is a network communications protocol, which regulates the all communication devices on the network, in particular data formats and transmission scheme exchanges between a host and another host. TCP / IP protocol is the basis of the INTERNET, a computer is a standard method of data packing and addressing. During a data transfer, the image can be understood as two envelopes, an envelope like TCP and IP, the information to be transmitted is divided into several segments, each segment of a TCP stuffed envelope, and the envelope surface of the recording watched number of pieces of information, then TCP IP large envelope stuffed envelopes, sending the Internet. At the receiver, a TCP package envelopes collected, extracted data, the order before sending the reduction, verify, and, if an error is found, TCP retransmission will be required. Thus, TCP / IP can transmit data without an error in almost INTERNET. For INTERNET users do not need to understand the whole structure of the network protocol, only need to know the IP address format, the network can communicate with the rest of the world.
What is an IP address? In order to connect to the Internet in many computer host recognizes when communicating with each other, each host in the Internet is assigned a unique 32-bit address, the address called an IP address, also called Internet address. 4 by the number of IP addresses, each number ranging from 0 to 255 may be, by a dot between the number of separate, for example, ".": 210.38.32.4 fact, each IP address is a network number and host number two-part. Network connection numbers show host network, host number that identifies a specific host on the network. Such as: the above example is the network number 210.38.32, 4 is the host number. What is a domain name? IP addresses are numbers to represent the address of the host, more difficult to remember. In order to use and easy to remember, and to facilitate the hierarchical management and the allocation of network addresses, INTERNET using a domain management system (DOMAIN NAME SYSTEM) 1984, each host having a network structure similar to the following domain: host number. organization name network name. domain name highest level with a set of short English expression, than the IP address expressed in numbers easy to remember. For example: Beijing telegraph office with a networked INTERNET IP address of the host computer is 202.96.0.97, the domain name PUBLIC.BTA.NET.CN, its meaning is: Host No. PUBLIC Beijing Cable and Wireless network center China which... NET.CN expressed as the postal network, other network domain names in China were:. AC.CN represented as a research network. .EDU.CN expressed as the Board of Education Network. .COM. CN represented as GBN. INTERNET network at all levels to join the hosts in the naming and allocation of this site within the network host number in accordance with the rules of the domain name system management, and is responsible for converting domain names to IP addresses when communication is completed. For the user, we must in most cases you can not use an IP address, and direct the use of the domain name service system to automatically turn on the INTERNET type of IP address. CHINANET Internet and what is the relationship? CHINANET is Internet-based network technology Chinese public Internet network operation and management of the postal department, it is China's Internet backbone network. By international access Internet, the Internet CHINANET become part of the Internet. Through flexible access CHINANET and cities across the country access point, you can easily access the international Internet, enjoy a rich variety of resources and services on the Internet. CHINANET by the core layer and access layer. The core layer is the main provider of domestic high-speed connection and access layer relay channel, is also responsible for the international Internet interconnection, the core layer is composed of CHINANET backbone network. Access layer is responsible for providing a user interface and a variety of server resources. CHINANET simultaneously with ChinaPac, PSTN, ChinaDDN, ChinaMail Unicom, to facilitate user access. CHINANET provide 2M rate of six international routes, are linked to the US Sprint, MCI and AT & T-peer network and a line rate two 128K, respectively connected to Japan and Singapore. What is a Home Page? Home Page: Home literal translation. But if only literally as "Home" would be wrong, or rather a Home Page with HTML (descriptive language) will be better organized information, and then translated through the appropriate interpreter or browser a variety of information, including the organization of text, images, sound, animation and so on. Users can it be treated equally with newspapers, magazines, television, radio and so on. Home Page of the original code and the transmission is related to the Home Page graphics files, sound files on a server (called WWW) query. For example, you want to understand the situation of Taiyuan Radio and TV University, Taiyuan you can browse HomePage Radio and TV University, Taiyuan that it should be on radio and television at the University of WWW server, then enter the URL where the browser input:
What is DNS? Each time the network connectivity issues when asked engineers, their answer is usually: "Dedicated broken or DNS Server hung up" in the end what is the DNS Server, why is it a machine when we can not access the fun of it ? DNS full name Domain Name Server, DNS Server in the description before, you may first explain what the Domain Name, to identify a computer on the Internet way is to use IP, but a set of IP numbers is not easy to remember, and there is no association meaning, so we'll take a server on the network as a meaningful and easy to remember name, the name we call it "Domain name." For example: For Taiyuan broadcast Dianshidaxue school website, the general user is browsing the site, will enter, but very few people will remember this IP Server is how much? So is the Taiyuan broadcast Dianshitaixue of DomainName, and 210.38.32.4 is its IP, just like when we call friends, must be called by his name, almost no one is call each other ××× size of it! However, due to the recognition in the Internet on a real machine or IP, so when the user inputs Domain Name, the browser must first go to a Domain Name and IP hosts have the corresponding data to query this computer IP, but this Yi checked hosts, we call it the Domain name Server, referred to as DNS, such as: when you enter, the browser will be transferred to the name of the nearest DNS Server to do the identification, if the inquiry found, will return this IP hosts, and then simply asked to obtain information, but if not found, the situation is similar to the DNS nOT fOUND will happen, so once the DNS Server crash, like a signpost completely destroyed, no one knows to send data to get there. With us is different from the average person's name, Domain Name and IP, as each Domain Name must correspond to a set of IP, but is unique, and the same IP, Domain Name can not be repeated.