When a normal computer user wants to use a computer network, they usually just turn on their device and open a web browser. As a computer scientist, you are interested in how a network really works.

In this topic, you will learn about types of network, protocols, standards, packets, VPN’s, and more.

Networks encapsulate messages into packets and then transmit those packets to another network via a clever system of routers and switches. When the packets arrive at their destination, they are de-encapsulated and changed into a message an application can then display to a user. And this happens in under one second!

Big question: How do different networks communicate without errors?

Big question: How do wireless networks work?

Big questions: What are the physical parts of a network?

One of the neat things about this topic is it’s easy to learn some pretty powerful tools which help you understand how networks actually work on your computer.