Which technology is NOT mentioned as a low-power wireless technology used in IoT in the material?

• A. LoRaWAN
• B. WiFi
• C. 5G
• D. ZigBee

Answer: (C)

Low-power wireless technologies for IoT are chosen for long battery life and minimal energy use, often by enabling long sleep periods and infrequent transmissions. The materials typically highlight options like LoRaWAN for long-range, ZigBee for short-range mesh with very low power, and a low-power variant of WiFi (such as WiFi HaLow) that aims to reduce energy consumption.

5G, while powerful for high data rates and low latency, is not generally described as a low-power IoT technology in these materials. It’s a cellular standard built around delivering a lot of throughput and responsiveness, which usually involves higher energy use. For IoT, the low-power counterparts are more about LPWAN and ultra-low-power variants, whereas 5G itself isn’t classified in that category in the material. That’s why it’s the one not listed as a low-power IoT wireless technology.