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How the Internet works by Jerrin
January 25, 2023

How the Internet works by Jerrin

Reading Time: 3 minutes

The internet is a global network of interconnected computers that communicate using protocols. The backbone is made of high-speed fiber-optic cables connecting data centers. Devices connect to the internet through local network and ISPs using protocols suc

The internet is a vast network of interconnected computers that enables the exchange of information and communication on a global scale. Understanding the basics of how the internet works is important for anyone who wants to navigate it effectively. In this article, we'll take a look at the key components of the internet and how they work together to make the online world possible.

The Network of Networks

The internet is often referred to as a ‘network of networks’ because it is made up of a vast collection of smaller networks that are connected to one another. These networks can be local area networks (LANs) or wide area networks (WANs) and can include everything from a home network to a large corporate network. The networks are connected to one another through routers, which are specialized devices that forward data packets between networks.

The Internet Protocol (IP)

The internet relies on a set of protocols, or rules, that govern how data is transmitted and received. The most important of these protocols is the Internet Protocol (IP), which is responsible for routing data packets between networks. IP addresses are unique numerical labels assigned to each device connected to the internet. These addresses are used by routers to determine where to forward data packets.

Transmission Control Protocol (TCP)

Another important protocol that is used to transmit data over the internet is the Transmission Control Protocol (TCP). TCP is responsible for ensuring that data packets are transmitted reliably and in the correct order. It works by breaking up large data files into smaller packets and then transmitting them individually. The receiving device then reassembles the packets to reconstruct the original data.

Domain Name System (DNS)

When you type a website's address into your browser, you're actually entering a string of characters that corresponds to the website's IP address. The Domain Name System (DNS) is responsible for translating human-friendly domain names, such as, into the IP addresses that computers use to locate websites. DNS servers act as a kind of phone book for the internet, keeping track of the IP addresses associated with each domain name.

The World Wide Web (WWW)

The World Wide Web (WWW) is a collection of interconnected documents and other resources, linked by hyperlinks and URLs. It is the most widely used service on the internet, allowing users to access information, communicate and share content. The World Wide Web is based on the Hypertext Transfer Protocol (HTTP), which is the protocol used for transmitting data over the web.

The Cloud

The cloud refers to a network of remote servers that are used to store, manage and process data. It allows users to access data and applications from anywhere, using any device that has an internet connection. Cloud computing has become increasingly popular in recent years, as more and more companies are moving their data and applications to the cloud to take advantage of its scalability, reliability and cost-effectiveness.


The internet is a powerful tool that has changed the way we live and work, connecting us to people and information all over the world. By understanding the key components of the internet, such as networks, protocols, and services, we can better navigate the online world and take full advantage of all that it has to offer.

© 2023 Jerrin Dawny


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