Think it through together · A little story
A girl connects her computer with an Ethernet cable, while the robot uses Wi-Fi. They can send the same photo, so why does one connection feel more reliable?
Lay out the process
- Ethernet cableSignals travel along a cable
- Wi-FiSignals travel over radio
- What they shareBoth exchange data using network rules
Common Ethernet connections carry signals over cables, while Wi-Fi uses radio waves.
Wireless connections make it easy to move around, but walls, distance, and other wireless devices can affect communication. Cables are usually less affected by wireless interference, but the cable, port, and equipment can also limit performance.
When choosing, consider whether you need mobility, how easy it is to run cables, and the quality of the actual connection.
Your turn to try
Wi-Fi may get worse as you move farther from an access point. Is that because the webpage has more words?
Have you thought it through? Open for an explanation
Usually not. Distance and obstacles can weaken a wireless signal, lowering the data rate or causing retransmissions. The size of the webpage is a separate factor.
Take away one discovery
Common Ethernet connections carry signals over cables, while Wi-Fi uses radio waves.
Try covering the diagram above and explaining each step to someone in your family. If one step is hard to explain, go back and look at that card again.