What is internet ? How internet works? It's history .Advantage and disadvantage of internet

 Today, the Internet is one of the most powerful tools around the world, and in today's society, the Internet is a major part of everyone's life, whether it is school, business or entertainment.  The word Internet means, according to the dictionary: a system of connected computers that allows computer users around the world to exchange information.

 You must have been using the Internet every day, so the question has come to your mind that what is the Internet, how does the Internet work? And what are the advantages and disadvantages of the Internet?  Perhaps these questions may have come to your mind, today all your questions will be answered, till the completion of this article, just read this article completely because this article today is going to prove very beneficial for you.

 What is internet?

 The Internet is a globally connected network system that uses TCP / IP to transmit data through a wide variety of media.  The Internet is a network of global exchanges - including private, public, business, academic and government networks that are connected by wireless and fiber-optic technologies.

Optical fibre

 The Internet and the World Wide Web are often used interchangeably, but they are not really the same thing but separate, the Internet refers to global communication systems including hardware and infrastructure, while the Web services transmitted over the Internet.  Is one of

 Internet can be used:

 To send and receive email messages, to share photographs and video clips with your friends and family, to buy goods and services, to do online banking, to play online games with others, to learn something new with an online course, etc.

 How does the Internet work ?

 Physically, the Internet uses a portion of the total resources of the current public telecommunications network.  Technically, what distinguishes the Internet is the use of a set of protocols called Transmission Control Protocol / Internet Protocol (TCP / IP).  Two recent adaptations of intranet and extranet also use the TCP / IP protocol.

 The Internet can be seen as having two major components: network protocol and hardware.  Protocols, such as the TCP / IP suite, are the current set of rules that devices follow to accomplish a task.  Without this common collection of rules, machines would not be able to communicate.

 Protocols are also responsible for translating the alphabetic text of a message into electronic signals, which can be transmitted over the Internet, and then reverted to readable alphabetic text.

 Hardware, which is the second major component of the Internet that includes everything from computers or smartphones that are used to access the Internet to carry information from one device to another.  Additional types of hardware include satellites, radios, cell phone towers, routers and servers.  Are included.

 The process of transferring information from one device to another depends on packet switching.  Each computer connected to the Internet is assigned a specific IP address that allows the device to be identified.  When one device attempts to send a message to another device, the data is sent to the Internet in the form of manageable packets.  Each packet is assigned a port number that will connect it to its endpoint.

 A packet that has a unique IP address and port number can be translated from alphabetic text to electronic signals, which can travel from the top application layer to the bottom physical layer of the OSI model's layers.  The message will then be sent to the Internet where it is received by the Internet service provider’s (ISP) router.  The Router will check the destination address of each packet and determine where to send it.

 Eventually, the packet reaches the client and travels in reverse from the bottom physical layer of the OSI model to the top application layer.  During this process, the routing data - port number and IP address is taken out of the packet, thus allowing the data to be transmitted back to alphabetic text and to complete the transmission process.


What is the difference between World Wide Web and Internet?

 The key difference between the Internet and the World Wide Web (WWW or the Web) is that the Internet network has a global connection, while the Web is a collection of information that can be accessed using the Internet. The most commonly used web  Is the part to be done.  Its biggest feature is hypertext which is a method of instant instant cross-referencing.

 In most web sites, some words or phrases appear in a different colored text than the rest, and often this text is also underlined.  When a user selects one of these words or phrases, they are transferred to the corresponding site or page.  Buttons, images, or portions of images are also used as hyperlinks.

 The web provides access to billions of information pages.  Web browsing is done through a web browser, the most popular of which are Google Chrome, Firefox and Internet Explorer.  The presence of a particular web site may vary slightly depending on the browser used.

 Security and Internet

 Large amounts of information, both public and private, are collected on the Internet, putting users at risk of data breaches and other security threats.  Hackers and crackers can break into networks and systems and steal information like login information or bank and credit card account records.  Some steps can be taken to protect online privacy such as:

 Installing Antivirus and anti-malware. Hard, creating passwords that are impossible to guess. Using virtual private network (VPN) or, at least, a private browsing mode, such as Google Chrome's Incognito window. Using HTTPS only  To make all social media accounts private  Avoid. Take care when accessing public Wi-Fi or hotspot.

 Additionally, there is an element of the Internet called the dark web.  Dark Web is hidden and inaccessible through standard browsers.  Instead, it uses Tor and I2P browsers that allow users to remain completely anonymous.

 History of internet

 The Internet's predecessor ARPANet was first deployed in 1969.  In 1983, ARPANet used the TCP / IP open networking protocol suite and in 1985, the National Science Foundation Network (NSFN) designed the network to connect the university's computer science department around the country.

 Communication on the Internet was greatly improved in 1989 during the creation of the hypertext transfer protocol (HTTP), giving different computer platforms the ability to connect to the same Internet sites.  In 1993, the Mosaic web browser was created.

 The Internet has continued to grow and develop over the years since its existence.  IPv6, for example, was designed to predict future expansion in the number of available IP addresses.

 Advantages of internet


 1.information , knowledge and education

 The internet contains endless knowledge and information that allows you to learn about almost any topic or question.  Using a search engine like Google, you can ask virtually any question and find a web page with the answer to that question.  There are also millions of videos on sites like YouTube which help explain various topics and even online courses from which you can learn about many different topics.

 2.Connectivity and communication

 In the past, it took days and sometimes months to receive a letter from another person.  Today, with the help of internet, you can send e-mail to anyone in the world and it reaches in less than a minute.  Other forms of communication, such as chat and VOIP (Voice over Internet Protocol), allow you to have instant communication with anyone in the world.

 3.Addressing and mapping

 With the help of GPS technology, the Internet can help you map and guide almost everywhere in the world, allowing you to quickly get to your location or find businesses in your area that can provide the service you need.  Can.

 Today's search engines are also smart enough to know your location and help you to give the most relevant searches for your area.  For example, if you need Electrician and are looking for Electrician, then you will only see local Electrician in your area in search result.

 4.Banking, bills, and shopping

 Internet gives you access to your bank account so that you can check your balance, make transactions, and send money.  In addition, many more services that enable you to view and pay your bills electronically.

 Online shopping is a huge benefit of the Internet, with the Internet providing anyone with the ability to find products that interest them and buy them without having to go to the store.  The Internet makes it easy for everyone to compare prices between companies and even looks at what other people think of a product through online reviews to help make better shopping decisions.



 Disadvantage of internet


 1.Addiction, time waster, and causes distractions

 Surfing the Internet and playing games can quickly become addictive.  Doing this will cost you a lot more time on the Internet than doing anything productive.

 2.Pornographic and violent images

 In our digital age, there is almost infinite content on the Internet.  While there are also amazing resources like Wikipedia and less desirable content also exists.  As a result, users may accidentally view violent or pornographic images they do not want to see.

 3.Identity theft, hacking, viruses, and cheating

 With access to billions of computers, computer hackers and malicious users can hack accounts and steal personal information that can be used for identity theft.  The Internet connects all computers to each other, so hackers can scan millions of computers and quickly find out which computers are vulnerable to attack.

 The Internet enables students to cheat in their studies, or some students find others on the Internet to do their homework.

 4.Spam and advertising

 It is great that the Internet can facilitate a much wider audience than traditional advertising methods (such as newspaper, TV, and radio).  Although digital advertising can be sent on a large scale, you will see more spam in your inbox than junk mail in real life.