How Does the Internet Actually Work?

Most people understand that the Internet is a means of sending and receiving information globally but what is it actually made of? Given we all tend to use the Internet every day for anything from reading the news to obtaining the latest weather forecast, understanding how it works is a good idea. Read on to find out more about the way the Internet function.

A Network of Devices

You can create a network of devices by plugging them into one another. An Ethernet cable connecting two PCs or three mobile devices connected via Bluetooth, for example, would
constitute a network of sorts. Many businesses operate with a server connected to terminals so all the information recorded on one device can be accessed by the others, effectively
sharing information live. This is called a local area network, or LAN. The internet is, fundamentally, an extension of a LAN whereby computers and other devices can connect to one another globally. The same system of sending and receiving packets of data by broadcasting them over the entire network is used. Only the relevant receiving machine should be able to access the data intended for it if the network is set up correctly. Since such data communications over public networks could be intercepted, the Internet relies on packets that have been encrypted. Only when all the relevant packets have been received will any information received be of any use.

Accessing the Right Sites

When you are on the Internet using a browser, you can get to the sites you want to access because of their domain names, registered when they are first set up. The domain name is
linked to a uniform resource locator and it has to be unique so that anyone entering one or linking to it via a hyperlink can only be directed to the correct place. Websites are typically
hosted on dedicated servers which are geared up to provide data exchanges rapidly. That said, you can host a website on a household computer if you want. The only problem with
doing so is that the device will always need to be on for the website to function and, typically, it will run slower than a professionally hosted site since the device may need to communicate with thousands of other devices at peak times. These days most businesses and blog sites opt for domain names they register with their chosen hosting provider since this makes them simpler to manage.

Internet Connectivity Explained

The Internet is a huge super-network of smaller ones. They are connected around the world via superfast optical fiber connections. In other locations, Internet services are typically
delivered over phone lines since this network predated the Internet and was convenient to use. Nowadays, more wireless connectivity is being deployed through local WiFi and
cellphone networks. Whichever type of connection is used, routers are deployed to help direct the data being sent back-and-forth in the most efficient manner. However, unlike a
conventional phone call, no end-to-end connection is needed: even if one part of the network were to go down, the communications could be rerouted.

Summary

The Internet is one big network of computers and other devices. Standardized communication protocols, known as IP, help all the devices using it to talk to one another.