How the Internet Works

What is the internet?
is the world's largest wide area network. The internet is made up of millions of smaller networks. Everything you find online comes through the Internet as i connects several networks together. Originally the internet was created as a research project for the government, so they could link all their information between headquarters. Back in the 1990's not many people had computers, so there wasn't a great demand for the Internet.


What is a protocol?
rules for how computers in a network communicate with each other. They control or enable the connection, communication, and data transfer between two computing endpoints. The protocol is like a guideline, with how to control the Internet. It has a list of do's and don't's for the Internet to follow, so it can successfully connect several networks. Protocol is the correct way to connect computers through multiple networks.

What is DNS?
DNS looks up the IP address for the host name of a website.DNS is like a phone book for the Internet; it looks up a host name and returns an IP address, or vice versa. When you type www.cnn.com into a web browser, the application has to go to a DNS server to find the IP address associated with www.cnn.com.