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The World Wide Web (WWW) How does it work?

Between 0 and 30 years ago, when you needed to find information, you would have gone to a library of books and there was information on almost any topic. But today we are doing what we are doing-sitting in front of a computer device and connecting online to find any information, which is much more powerful than any library in the world You can access this information from almost anywhere at anytime, anytime - and this is the  World Wide Web . Today we are so much dependent on the web that we can not live without the web. However, this was just 20 years ago when the web was invented. But in a short span of time it has become very popular, and becomes a part of our daily lives. So let's start by looking at all the known information about friends, the World Wide Web.

What is the difference between web and net?

WWW
Many think that the web and the internet are the same thing. And as long as you are not clear about this matter, it will not be possible to move forward in the tune. So let's know about this issue well.

The Internet - A vast network of world wide computers. There may be a lot of work on the Internet (these are called applications) and the Web is one of those tasks. When you send an email to someone, you are using the Internet - why your message is reaching other computers through a connection. Again, when you are chatting with someone, you are still using the Internet - why your messaging is repeatedly sent and received through the network. But when you update your blog or search for something on Google, then you use the Web on the  Internet . For more details about the Internet, read my article "How the Internet Works?" Article.

The World Wide Web  is a great collection of text pages, digital photographs, music files, videos, and animations across the globe, which you can access on the Internet. The most important thing about the World Wide Web is that each of its information is related to each other. The most basic tool to create web pages is text pages (such as this page),   also known as webpage . Many webpage collections on a computer are called  websites . Each webpage (along with this page) has highlighted phrases that are called links (or hypertext links). Another link can be accessed by clicking on any link, and thus the process continues.

How do computers speak one language to each other?

Binary
The most important thing on the Internet is that every computer on the Internet can exchange information with each other. And this is the most important thing on the Internet. If back-to-back computers are seen, the 1960s, 1970s, 1980s computers had the ability to exchange information among themselves. Each machine was manufactured by different manufacturers and none was able to understand the language of another machine. In the 1970s personal computers did not have the power to run a common program. Each computer could run only those programs which were specifically written for them. Things like email and chat were then impossible.

But in the year 1980, a large computer company, IBM, earned a reputation for the development of their new personal computer. Most people cloned their computers and soon most of the personal computers started working in the same way. After that Microsoft developed a software that is named Windows. With the introduction of Windows to IBM computers, it was possible to run all the computers in the same program. But even then computers were not so easy to talk to each other. For example, large computer machines with personal computers and computers of science research could not establish relationships. So how could the computers of these different languages ​​be able to talk to each other?

This great problem is solved by an English computer scientist-named  Tim Berners-Lee . In the 1980s, he worked at a European laboratory laboratory, where people from different universities of the world used to work, and everyone used to work in a different language incompatible computers. As a result, it was not possible for every human to share the information of their important research. Because their computers were not able to exchange information with each other. And then Tim Berners-Lee discovered a surprise, which made it possible to talk to each computer.

What is the difference between HTTP and HTML?

Html Programming
However, the previous computers were very incompatible and they  used to preserve the data using the ASCII (American Standard Code for Information Interchange) method. And it would have been known as "plain text". 0-255 numbers in ASCII work as a variation of various letters, numbers, and keyboard characters such as A, B, C, 1, 2, 3,%, &, and @. Tim Burners-Lee uses two basic ASCII systems that are called protocols in the computer terminology. Then all the computers in his lab started following these two rules and he realized that the computers were able to easily exchange information between them.

He named the first rule in HPTP (HyperText Transfer Protocol) (HTTP). This is an important method by which two computers can exchange any information by talking to them. A computer (called a client, and the program that uses the program   is called a web browser ) is another computer (  server  or  web server) Asked) to ask for any information as a normal message. After that, the client and the server chat with each other for a few seconds, the browser asks the server for any information, and if the server finds it, it will send it to the browser. This HTTP talk in web browser and web server is a lot like "passing salt in the food table". Sometimes your salt needs to be eaten and you ask someone else who is sitting on the table to pass the salinity, and he says, "this is your saltpocket". It works the same way, it is a language that every computer knows, and by talking about it, computers share files with each other.

The computer must recognize the file to display the file that is actually available to a computer on the HTTP. So here Tim Berners-Lee showed another example of his genius. He uses a common language to share information that is known as HTML. HTML relies on ASCII systems, so any computer can understand it. HTML contains some special codes that are known as tags. Web browsers read these tags and visit bold fonts, Italic, Headlines, tables, and images. If you want, you can see the hidden HTML code of this webpage. From your web browser  click on the View page source option on the page  , you will see the diameter.
Source Code
HTTP and HTML are those systems that rely on the World Wide Web. HTTP is a common way through which computers request webpage to each other and HTML is the webpage that all computers can read and display. I hope there is no problem in understanding about this. If you have any questions then you can say it in tuet.

When the web browser relates to the server?

Web browsers (clients) and servers do not exchange information with each other, using the English language and using the Nimbara Bangla language - they use the HTTP language. See what you have said about your web browser and server when you load this page into your browser.
What the web browser asked
GET / world-wide-web-explained HTTP / 1.1
Host: bn.techubs.net,
User-Agent: Mozilla / 5.0 (Windows NT 10.0; WV64; rv: 47.0) Gecko / 20100101 Firefox / 47.0
Accept: text / html, application / xhtml + xml, application / xml; q = 0.9, * / *; q = 0.8,
Accept-language: en-gb, en; q = 0.5,
Accept-Encoding: gzip, deflate,
Accept-Charset: ISO- 8859-1, utf-8; q = 0.7, *; q = 0.7,
Keep-Alive: 300,
Connection: keep-alive,
The server responded
HTTP / 1.1 200 OK
Date: Mon, 08 Aug 2016 04:38:02 GMT
Server: nginx
Content-Encoding: gzip
Content-Type text / html; charset = UTF-8
Location  http://webmaster.bdhug.com/2017/09/world-wide-web-explained.html

Want to know the meaning of these messages? Here the browser describes Firefox as the software name. I'm running Windows 10 operating system. Moreover, the browser stays in what files they support and support any language. Moreover, it also means that any compressed files will support it (such as gzip). And meant (/ world-wide-web-explained) This page needs browsers. In response to the browser, the server says that he uses nginx software and he is sending a compressed file (gzip). In addition, the server also means that it is sending text / html files and that is made by UTF-8.

HTTP status code

HTTP status code
At the beginning of the server reply, we can see that the HTTP / 1.1 200 has sent the OK message. "200" is the status code - which means that the server interprets the request file from the browser and it has been sent. The server can also provide more code. For example - if no webpage or file is found, the server will send the code 404 "Not Found". Again, if a webpage is moved from one link to another, 301 "Permanently moved" code will be sent. If the server is down to fix, 503 "Service Unavailable" code sends the code and the browser then understands that it needs to be tricked again.

What is URL?

Google URL
Team Burners-Lee put another brilliant way in his mind - that is to store information on any computer from any computer. He tuights that every web page should have a different name (such as a separate zip code for each address), and this is called a Universal or Uniform Resource Locator. The URL is the address of a page which, at this time you can see in the browser bar.
Let's try to know its real meaning in one second
"Https" is a separate issue, however, the "security" version of "http". "Http" means that two computers exchange data with each other using this process.
bn.techubs.net is an address or my computer's domain name.
/ world-wide-web-explained the page that you are now reading from my web server.
And if you combine these things, it will help the computer to understand that the requested page is in place, how it can be used, and how the page can be displayed. And just like this, the World Wide Web works.

How to set up your own website?

Computer System
A famous American publisher "Benjamin Franklin" once said that two things are essential in life, one is death and another tax payer. But today it is necessary to add the website to that list. Today it is necessary to have a website for personal life, starting with Kenona today. Today a website can be a powerful tool (powerful from television). People now prefer to publish all their personal life news on the Internet, prefer to keep their pictures, pictures of wedding photos, pictures of a particular moment saved on the web (such as Facebook and Twitter). If you think that you are behind these, now it's time to set up your new website. But how? Let's know.
What is the website?
Anyone can access the information that you have stored whenever you want, and which is open to all public, the website is called as a website. If you are familiar with a word processing software, know that you have to save a folder or a cv file that you have made to save in a folder or directory on your computer. All the documents on the website are saved in a specific folder or directory, and anybody can access any kind of special permissions. The computer on which the website is saved to a website is called a server. The main document on the website is its text page. But there are also various graphical documents on the website (eg, photographs in JPAP format, Different artworks are saved in the jif and PNG format) are preserved. That is, basically any information on the website is written in the form of text and the graphics are beautifully decorated (such as the Teckhaw!) - and they are put together in a folder that everyone can access. Hopefully you know about the website.
What do you need to host the website?
Theoretically, you can host your website on your computer, and even access it to the whole world. And to do all this, you have to bring some specific changes to your computer system and ensure that your internet connection can accept inkking traffic - and your computer must be registered with all the servers on the internet so that the servers can understand that your website is looking for the right words Will be

But here are three main reasons, so you will never want to host your website on your own computer. First of all, you can not use the computer on your own business. Kenona is always busy with your computer to fulfill the request of everyone else. Secondly, your computer must be running 7 days a week and 24 hours a day with internet connection - which you will never want. And thirdly, if your computer is public, hackers may attack your computer and access other folders or directories, your security and privacy will be lost.

So people have to hire computers from a company to distribute their websites in a realistic way. And these computers have some large internet service providers or ISP controls. This means that in return for someone, your website can be hosted on their own computer. Generally, if you want to set up a website, then  you need to purchase one of the  hosting packages . The hosting package is a basic contract between you and ISP, where   you can use disk space  and  bandwidth for the amount of money (bandwidth is a specific amount, which indicates exactly how much information users can access from your website every month).

After buying the hosting package, ISP provides you a default directory such as "www.largewebhostingisp.com/yoursite4321" but this directory is not easy to remember at all. So you have to choose an easy name for your website-which is   called a domain name. Domain name is a simple, easy to remember address that users can easily remember. To make the domain name work, it is to point to the default directory or IP from your ISP (eg  http://www.largewebhostingisp.com/yoursite4321 ). So when users enter your domain name in their browser address bar - they will go to the original address or directory or to the IP, and these processes are hidden in all the cinemas and are automatically - so there is no reason to worry about you.

Some ISPs provide friendly systems for users, where hosting packages and domain names can be set up together. And by giving them an annual fee, these services can be accessed, making a general website costing at least 3,000-6,000 rupees is possible. When you buy a domain name you are made a legitimate owner of that domain name - and all your information is stored in a database, which   is called a wiz . And that's why another person can not buy the same name again.

How do you create a webpage?

Setting up domain name and web hosting works equal to five minutes. But creating a website can take a lot of time-you will need to write a lot of information here (you want to keep the information stored), you will need to create a nice page layout and look for photographs to enhance your information. Will be needed Anyway, you can easily create a web page in three ways.
RAW HTML
To create a webpage, you can basically use Notepad or WordPad - which is the default in Windows, it is possible to create web pages as desired by coding it as desired. And in this way you will understand very well how a webpage works correctly. But creating a webpage in this method is a bit of a hassle-if you do not know the right code, you can not create the webpage. Instead of creating a webpage, you can customize web pages from ready-made pages - and this is called  template . The template is a pre-designed HTML file, which allows you to enter your information. By using it you can create an instant website. But the problem with using templates is that your site will look like thousands of sites.
WYSIWYG editor
Another way to create a webpage is to use a page editor program, which is secretly coding to create pages. And these programs are said to be WYSIWYG (what you see is what you get) editor, Kenona, you can create layouts here, and all the codes will be automatically behind you. Many popular programs such as Dreamweaver work in exactly the same way. Moreover, most word processing software such as Microsoft Word, Open Office, etc. allows you to convert a text document directly to a webpage, by clicking just a few mouse clicks.
Content Management System (CMS)
The latest way to create a webpage is to create content using Content Management System (CMS). This method helps you create websites automatically by keeping all technical issues aside. You can easily create a page template and set any style through visual changes - and it is said to be the  theme . You can easily create any pages and tunes and publish it on your site. Wordpress, Drupal, Joomla etc. CMS works in the same way. Moreover, you can add many types of extra functions to your site - and it is said to be  plugins .

How to upload your web pages?

Once the webpage is created and the domain and the hosting are purchased, it will now be necessary to upload your web pages to the web server. Web pages are uploaded on the web server using FTP (File Transfer Protocol). This process is very easy, much like copying files from one folder to another folder to another folder. With the upload of your web pages, your website will be accessible publicly within a few seconds. You can edit any web page as you wish. To avoid any kind of mistake, you can backup your entire site to your computer. It will not be afraid to lose your information even if it crashes your server.

How to promote your website?

Online Marketing
You will certainly want that many people find out your website. So you need to share your site link on other websites. You have to register your site in various search engines such as Google, Yahoo, Bing, and dozens more search engines. Within a short time or later Google will accept search engines like yours, if your link is added to other sites. Because Google's robots are always visiting all sites to index new content.

So it was almost the topic of today. If you understand well and want to know how the website is built or how it works, the best way is to create a website yourself. You can easily create a site by hosting webpages on your computer and if you have thought of something professional then you can create a site by buying a host and domain from ISPs. If you want you can mail me, I will suggest you. You can also tuit down any questions you want.

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