How Computers Work · Course 5
Your Computer on a Network
How your computer finds the internet, and what to check when it can't.
- 1IP Addresses at Home10 min · Find your computer's address, your router's address and your MAC address.
- 2DNS: Names to Numbers9 min · How your computer turns a website's name into an address it can reach.
- 3Routers and DHCP9 min · How the router hands out addresses, and why restarting it fixes so much.
- 4The Firewall10 min · What the firewall blocks, Private vs Public networks, and why it stays on.
- 5Challenge: The Family Internet Is Down12 min · Help your sister's family get back online, one clue at a time.
Hands-on
Do it on the practice computer
Lessons have labs you can try in your browser, plus questions that earn points toward the Net Navigator badge.
Start lesson 1