ENN524. Week 4 quiz questions
1. LPWAN does not have to depend on cellular technologies to operate.
a) True
b) False
2. LPWAN can replace WLAN for large file transfer
a) True
b) False
3
Short range radio connectivity is never useful for IoT
a) True
b) False
4
Which one of the following networks can be part of networks for IoT
a) WPAN
b) Cellular network
c) WLAN
d) RFID
e) Any of the above
5. The link budget is calculation of the required transmission power at the end-device. a)
True
b) False
6. LoRa is a standard-based LPWAN
a) True
b) False
7. A LoRa end device sends data to _____.
a) a single gateway
b) multiple gateways
c)
a cellular base station
d) an AP
e) a computer device
8. Which one of the following statements is correct?
a) LoRa does not requires to a dedicated infrastructure (such as base stations) to
operate
b) Lora does not require operational costs
c)
the connection between a Lora end device and a gateway is one-way.
d) Lora uses the 2.4 GHz frequency band
e) All the above
9. Which of the following LPWAN technologies offers the smallest data rate:
a) Lora
b) Sigfox
c) LTE-M
d) NB-IoT
e) Zigbee
10. Which of the following LPWAN technologies requires an independent network to
operate:
a) Lora
b) Sigfox
c) LTE-M
d) NB-IoT
e) Zigbee
11. SigFox competes the cellular services. True or false?
a) True
b) False
12. SigFox archives the connections through cellular base stations. True or false?
a) True
b) False
13. SigFox can be used for real-time vehicle tracking
a) Yes
b) No
14. For SigFox, transmissions are initiated at____________.
a) Sigfox end devices
b) Sigfox gateway
c) Any ends
15. In the term of NB-IOT, NB means__________
a) National Broadband
b) Narrow-Band
c)
Both a) and b)
d) None of the above
16. NB-IoT’s data rate is lower than LTE-M. True or False?
a) True
b) False
17. NB-IoT requires on-going operational cost. True or False?
a) True
b) False
18. LTE-M does not require a gateway to operate. True or False?
a) True
b) False
19. If both LTE-M and NB-IoT meet the data rate requirements, which one of the following is
not correct?
a) Choose LTE-M for user mobility
b) Choose NB-IoT for mobility
c)
Choose LTE-M for regional availability
20. The operational costs of NB-IOT and LTE-M are generally higher than LoRa. True or False
a) True
b) False
21. Real-time Asset Monitoring is to enable real-time monitoring and predictive diagnostics
of assets to automatically trigger and proactively initiate maintenance teams or service
networks to minimize downtime and identify maintenance and quality problems before they
occur.
In the above use case, which of the following LPWANs are most appropriate?
a) Lora
b) Sigfox
c) LTE-M
d) NB-IoT
e) WLAN IEEE 802.11n
22. NB-IoT is faster than LTE-M. True or False?
a) True
b) False
23. Which LPWAN supports voice?
a) LORA
b) Sigfox
c) LTE-M
d) NB-IOT
24. What are the techniques used by CAT M1, and NB1 for low power feature support?
a) PMS and GSM
b) PSM and E-DRX
c) eMTC and E-DRX
b) None of the above
25. What is standard-based LPWAN?
a) Lora
b) Sigfox
c) LTE M
d) Ingenu
26. What is not the use cases best suited for LTE-M?
a) Low-density Sensors
b) Automated Meter Reading
c) Asset Tracking with LTE-M
d) Water waste management
27. The physical layer of IEEE 802.11ah is based on 802.11ac. True or False?
a) True
b) False
28. Energy consumption by Lora is lowest than any other LPWAN. True or False?
a) True
b) False
29. Sigfox Physical Layer uses Ultra-Barrow Band. True or False?
a) True
b) False
30. LoRa does not required a base station. True or False?
a) True
b) False