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In this lesson

How Your Device Talks to the Internet

You can explain what wifi is and how your phone or laptop joins a wifi network.

You'll be able to

  • You can explain what wifi is and how your phone or laptop joins a wifi network.
  • You can explain what an IP address is and why your device needs one.
  • You can explain what DNS does when you type a website name.
  • You can describe the round trip: your device asks, a far-away computer answers.
  • You can tell the difference between your home network and the internet, and explain what the router and modem do in between.