Environments, Programming & Features
Exam Questions and Answers Graded A+
Zigbee - Correct answer-A low-powered wireless technology that supports mesh
networking and works well for short to mid-range IoT devices
LPWAN (Low Power Wireless Area Network) - Correct answer-A group of long-
range, low-power wireless technologies using sub-1 GHz bands, like 868 MHz in
the EU and 915 MHz in the US
UNB (Ultra-Narrowband) - Correct answer-A communication method that use
extremely small bandwidth, usually under 1 kHz, making it ideal for sending tiny
amounts of data very efficiently
Spread Spectrum - Correct answer-A technique that spreads a signal across a wider
frequency range to reduce interference and improve reliability and security
LoRaWAN - Correct answer-A long-range IoT network standard based on
Semtech's LoRa technology that uses spread-spectrum modulation