What is Web?

Website : Collection of Web pages is called as a website.

Example : www.hacktify.in is a website.

Web Browser : Software programs that allows user to locate , access and display web pages of websites.

Example: Chrome , Internet Explorer, Opera, Mozilla Firefox.

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What is DNS?

DNS is Domain Name System/Service/System

DNS is to translate domain names into IP Addresses, which computers can understand.

With the help of DNS Any Client is able to reach to a server.

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To Learn Functioning of DNS Visit Website : https://howdns.works/ 

What is a Web Server?

A computer software designed to process requests and deliver data to another computer over the internet or a local network.

HTTP Server

Email Server

FTP Server

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Apache HTTP Server : Free and open source cross platform severer helps to run websites.

Ngnix :   Free and open source cross platform severer helps to run website

IIS : Windows based servers

To install Apache in Linux : apt-get install apache2

To start Apache Server : service apache2 start

To check the Status : service apache2 status

To check the port config goto directory : nano /etc/apache2/ports.conf

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To checkout your website on the browser visit ip of your machine and port number you are listening on!!

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This was the quick recap of What is Web, What is DNS and How does Web Server Works.