According to the University of Colorado at Boulder, the Internet is a vast network that connects computers around the world via more than 750,000 miles (1,200,000 kilometers) of cables underground and under sea.
It’s the fastest communication method in the world, sending data from London, UK to Sydney, Australia in just 250 milliseconds, for example. Building and maintaining the Internet has been a monumental feat of ingenuity.
What is the internet?
The Internet is a giant computer network, connecting billions of machines together by fiber optic cables underground and undersea.These cables work connect continents and islandseverywhere except Antarctic
Each cable contains strands of glass that transmit data in the form of light pulses, according to the newspaper Science. These strands are wrapped in layers of insulation and buried under the seabed by ships carrying specialized plows. This helps protect them from everything from corrosion to shark bites.
When you use it, your computer or device sends messages through these cables asking to access data stored on other machines. When accessing the Internet, most people will use the World Wide Web.
When was the Internet invented?
It was originally created by the US government during the Cold War. In 1958, President Eisenhower founded the Advanced Research Projects Agency (ARPA) to boost the country’s military technology, according to the Journal of Cyber Policy. Scientists and engineers have developed a network of computers called ARPANET.
The original purpose of ARPANET was to link two computers in different locations, allowing them to share data. This dream came true in 1969, according to the historian Jeremy Normand. In the years that followed, the team linked dozens of computers together, and by the end of the 1980s the network contained more than 30,000 machines, according to the UK. Science and Media Museum.
How the internet works
Most computers connect to the Internet without using cables, using Wireless, via a physical modem. It connects via wire to a socket in the wall, which connects to a box outside. This box connects via even more wires to a network of underground cables. Together they convert radio waves for electrical signals fiber optic pulses, and vice versa.
At each underground network connection point, there are junction boxes called routers. Their job is to find the best way to transmit data from your computer to the computer you are trying to connect with. According to IEEE International Communications Conference, they use your IP addresses to determine where the data should go. Latency is the technical word that describes how long it takes for data to get from one place to another, depending on Frontier.
Each router is only connected to its local network. If a message arrives for a computer that the router does not recognize, it forwards it to a router higher up in the local network. They each maintain an address book called routing table. According to Internet Protocol Logit shows paths through the network to all local IP addresses.
The Internet sends data around the world, over land and sea, as displayed on the Map of submarine cables. Data travels between networks until it reaches the one closest to its destination. Then it goes through local routers until it arrives at the computer with the corresponding IP address.
The Internet is based on the connection of two computers speaking the same digital language. To achieve this, there is a set of rules called Transmission Control Protocol (TCP) and Internet Protocol (IP), depending on the web infrastructure and the security company of the website. Cloudy.
TCP/IP makes the Internet work much like a postal system. There is an address book containing the identity of each device over the network, and a set of standard envelopes to wrap the data. Envelopes should bear the sender’s address, recipient’s address and details of the information contained inside. IP explains how the addressing system works, while TCP explains how to package and send data.
How do websites work?
Click on the numbers in the following interactive image to find out what happens when you type www.livescience.com into your browser:
Internet speed and bandwidth
When it comes to internet speed, the amount of data you can download in a second: bandwidth. According to Tom’s Guide, to surf the web, check email and update social networks, 25 megabits per second is enough. But if you want to watch 4K movies, stream live video, or play online multiplayer games, you might need speeds of up to 100-200 megabits per second.
Your download speed depends on one main factor: the quality of the underground cables that connect you to the rest of the world. Fiber optic cables send data much faster than their copper counterparts, according to cable testing company BASICand your home Internet connection is limited by the infrastructure available in your area.
Jersey has the highest average bandwidth in the world, according to Cable.co.uk. The small British island off the coast of France boasts average download speeds of over 274 megabits per second. Turkmenistan has the lowest, with download speeds reaching just 0.5 megabits per second.