What technology consists of small, low-power digital radios?

What technology consists of small, low-power digital radios?
A . LTE
B . WiFi
C . ZigBee
D . Bluetooth

View Answer

Answer: C

Explanation:

ZigBee is based on the IEEE 802.15.4 protocol for WPAN, and aims at developing hardware and applications with a low data rate but also low power consumption and low complexity –for example, to control sensors. ZigBee-based products can access up to 16 separate 5 MHz channels in the 2.4 GHz band and are not compatible with 802.11 devices. The maximum power of ZigBee is 60 mW. Devices use low consumption most of the time but can spike when needed: The impact on wireless networks can then be significant.