Join Doug Winnie for an in-depth discussion in this video Sending and receiving information, part of Computer Science Principles: The Internet.
- Everything that we create on a computer…is translated into digital information using bits.…This could mean a collection of thousands,…millions, or billions of bits, or more,…need to have a way to be transmitted over the internet.…But, in order to do that, there needs to be…a way to take the information and break it down,…so we have a reliable way to send it over the network.…Every message, file, or stream of information…is broken down into small chunks, called packets.…
When packets are sent on the internet,…they usually will travel the network together.…But, take a situation like a road trip.…If you and your friends are in four separate cars,…and you're going down the highway,…at a certain point there might be an accident…cutting off the route of two people.…They might have to take a different route…to get to the destination.…To help with this, each packet…contains some important information…inside of it called the header.…First, the packet says where it came from.…
This is like the return address on an envelope.…
This course is the second in our Computer Science Principles series, designed around the AP Computer Science Principles (CSP) curriculum. It is a great foundation for anyone, at any age, to prepare for careers in technology and computer science. Understanding basics like the Internet will help you understand the interplay between hardware, software, data, networks, and the people that use them.
- How the Internet was born
- Sending and receiving information on a computer
- IP addressing
- DNS, routers, and packets
- Identifying web servers with URLs
- HTTP and HTML
- Encrypting data that's sent over the Internet