Wireless networking
Networking without cables using radio frequencies enabling mobile communication. Wireless technologies include WiFi, Bluetooth, and cellular networks.
Real World
London Underground introduced WiFi on the Jubilee line using 2.4GHz and 5GHz frequencies, letting commuters browse the web — the 5GHz band offers faster speeds but shorter range than 2.4GHz.
Exam Focus
Name specific standards like 802.11 and frequency bands — vague answers like 'uses radio waves' lose marks.
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