Multiple Choice Questions & Answers on Key Enablers of Industrial IoT 

1. SIGFOX radio link operates on _____________.

a) Both licensed and unlicensed ISM band

b) Only licensed ISM band

c) Only unlicensed ISM band

d) None of the above

Answer: Only unlicensed ISM band

2. Coordinator ZigBee devices act as the bridge between ______.

a) Different networks

b) Different edge devices

c) Different fog devices

d) All of the above

Answer: Different networks

3. The architectural layers of SmartSantander include __________.

a) Accessible, Authorization, and Accounting subsystem

b) Authentication, Authorization, and Accounting subsystem

c) Authentication, Authorization, and Accomodation subsystem

d) None of the above

Answer: Authentication, Authorization, and Accounting subsystem

4. Smart warehousing uses ____________-based framework.

a) Both RIFT and RIST

b) Only RIFT

c) Only RIST

d) Only REST

Answer: Only REST

5. A typical industrial control system includes _____________ major components.

a) 1

b) 2

c) 3

d) 4

Answer: 4

6. How many network topologies are supported by ZigBee?

a) 2

b) 4

c) 3

d) 5

Answer: 3

7. In North America, which frequency band is used for LoRa?

a) 169 MHz

b) 433 MHz

c) 868 MHz

d) 915 MHz

Answer: 915 MHz

8. Which of the following IEEE standards is followed by the physical and MAC layer protocols in ZigBee?

a) IEEE 801.15.4

b) IEEE 802.15.4

c) IEEE 803.15.4

d) IEEE 804.15.4

Answer: IEEE 802.15.4

9. What does a DHT sensor measure?

a) Temperature

b) Humidity

c) Both (a) and (b)

d) None of the above

Answer: Both (a) and (b)

10. In python, how can we install the Xbee library?

a) pip install xbee

b) pip3 install xbee

c) python -m pip install xbee

d) All of the above

Answer: All of the above

11. Which of the following is/are considered as a message broker in real-time IoT systems?

a) Apache Kafka

b) MqTT

c) Both (a) and (b)

d) None of the above

Answer: Both (a) and (b)

12. What does CPS stand for?

a) Cyber Physical System

b) Cyclic Physical System

c) Cyber Physical Sequence

d) Computer-Physiological System

Answer: Cyber Physical System

13. What does iRobot-Factory enforce to improve its manufacturing process?

a) Cognitive intelligence

b) Managerial intelligence

c) Logistic intelligence

d) All of the above

Answer: Cognitive intelligence

14. Which of the following is/are considered as the component(s) of AR Drone-based precision agriculture?

a) Sprayer installed in a tractor

b) laptop

c) Both (a) and (b)

d) None of the above

Answer: Both (a) and (b)

15. What type of computer programs are used to execute the control actions in PLCs?

a) Pre-defined

b) Dynamic

c) Evolutionary

d) None of the above

Answer: Pre-defined

16. DeviceNet uses ____________.

a) CAN

b) SAN

c) PAN

d) MAN

Answer: CAN

17. In IIoT applications, a pressure sensor is used to measure ______________.

a) the atmospheric pressure in different Geographical location

b) the pressure in hydraulics systems

c) Both (a) and (b)

d) None of the above

Answer: the pressure in hydraulics systems

18. EtherCAT allows PDO/telegram exchange ________________.

a) Among the slave devices

b) Between the master and the slave devices

c) Among the master devices

d) None of the above

Answer: Between the master and the slave devices

19. A generic gas sensing system primarily includes _____________.

a) Sensor module

b) Processing unit

c) Analog temperature controller

d) All of the above

Answer: All of the above

20. Which of the following standards is/are followed by CC-Link?

a) IEC 61058

b) IEC 61508

c) IEC 61580

d) None of the above

Answer: IEC 61508

21. What does a magnetostrictive sensor measure?

a) Time-varying strain in ferromagnetic materials

b) Time-varying strain in non ferromagnetic material

c) Both of the above

d) None of the above

Answer: Time-varying strain in ferromagnetic materials

22. What does a PIR sensor detect?

a) Motion of human body parts

b) Pulse

c) Blood pressure

d) Infrared radiation from human body

Answer: Infrared radiation from human body

23. Which of the following is/are not referred to as the electrical variations of gas sensing methods?

a) Polymer

b) Gas chromatograph

c) CNT or carbon nanotube

d) MOS or Metal Oxide Semiconductors

Answer: Gas chromatograph

24. What does VOC stand for?

a) Volatile Organic Compound

b) Volatile Organic Communication

c) Variable Organic Communication

d) Volatile Ontological Compound

Answer: Volatile Organic Compound

25. “If the exposure of the sensor to the target gas is stopped, the sensor resistance can return back to its base resistance value” --- which of the following terms represents this characteristic of a generic gas sensor?

a) Sensitivity

b) Selectivity

c) Reversibility

d) Stability

Answer: Reversibility

26. Which of the following do(es) not refer to the typical communication requirements in industries?

a) Very high duty-cycle

b) Real-time

c) Very low latency

d) None of the above

Answer: Very high duty-cycle

27. Which of the following follow(s) IEC 61158 standard?

a) EtherCAT

b) Profibus

c) Both (a) and (b)

d) None of the above

Answer: Both (a) and (b)

28. MBP is used for transmission and is suitable for hazardous environments. What does “MBP” stand for?

a) Manchester Bus Parity

b) Manchester Bit Power

c) Manchester Bus Power

d) None of the above

Answer: Manchester Bus Power

29. Which of the following is/are not aligned with the ITU service category?

a) eMMB

b) uRRLC

c) Both (a) and (b)

d) None of the above

Answer: uRRLC