WCM Chapter 5

'LoRa', 'Narrow-Band IOT' and 'Sig-Fox' are examples of LPWANs that feature _________________ range and ______________________battery consumption.

• short , high

• long, low

• short, low

• long, high

'LoRa' is a _____________________ technique derived from 'Chirp Spread Spectrum ' technology.

• Frequency modulation

• Amplitude modulation

• Spread Spectrum Modulation

• Phase modulation

The ________________ take care of frequency assignment and transmission of baseband information using RF carrier with the help of antenna over air.

• Physical layer

• MAC layer

• Application layer

• RF layer

'Sigfox' networks run on the unlicensed spectrum of _____ MHz (Europe) --------- MHz ( Rest of the world)

• 88, 90

• 870, 920

• 868, 902

• 888, 950

'Sigfox' networks required a bandwidth of below ______________ kHz.

• 400

• 300

• 200

• 100

'LoRa' can transmit over long distances of ________ using very low power

• 10 - 20 m

• 15 - 20 km

• 1000- 2000 km

• 10 - 200 m

LoRa -Based sensors can operate on small batteries for _________________

• seconds

• days

• months

• years

Which one is Not LoRa Protocol Stack??

• Application Layer

• MAC Layer

• LLC Layer

• RF layer

Class A of 'MAC' layer takes care of ________________

• Efficient (Beacon)

• Least Efficient (Continuous)

• Most Energy Efficient (Baseline)

• Not Efficient ( Discrete)

During operation, 'Sigfox' uses _____ bytes Upload per payload to transfer data.

• 1

• 2

• 6

• 12