Internet of Things MCQS

#1. Which IoT communication protocol is commonly used for communication between IoT devices in industrial automation systems?

MQTT

Modbus

OPC UA (Unified Architecture)

CoAP

DNP3 (Distributed Network Protocol 3)

#2. What is the main purpose of a strain gauge sensor in an IoT device?

To measure mechanical stress or strain

To process data

To display information

To store data

To provide power

#3. Which of the following is an example of an IoT application in smart retail?

Inventory management

Cooking

Social networking

Music production

Interior decoration

#4. What is the purpose of a Piezoelectric sensor in an IoT device?

To convert mechanical energy into electrical energy

To process data

To display information

To store data

To provide power

#5. Which IoT communication protocol is commonly used for communication between constrained devices and constrained nodes in low-power networks?

CoAP

MQTT

HTTP

LoRa

Zigbee

#6. In IoT, what is the purpose of a PIR (Passive Infrared) sensor?

To detect motion

To process data

To display information

To store data

To provide power

#7. Which of the following is an example of an IoT application in smart building automation?

Lighting control

Cooking

Social networking

Music production

Interior decoration

#8. What is the primary function of a gas sensor in an IoT device?

To detect the presence and concentration of specific gases

To process data

To display information

To store data

To provide power

#9. Which IoT communication protocol is commonly used for communication between IoT devices and cloud platforms?

MQTT

Modbus

CoAP

HTTP

Zigbee

#10. In IoT, what is the purpose of a humidity sensor?

To measure the moisture content in the air

To process data

To display information

To store data

To provide power

#11. Which of the following is an example of an IoT application in smart energy management?

Demand response

Cooking

Social networking

Music production

Interior decoration

#12. What is the main function of a gyroscope sensor in an IoT device?

To measure angular velocity

To process data

To display information

To store data

To provide power

#13. Which IoT communication protocol is commonly used for communication between IoT devices in home automation systems?

Zigbee

LoRa

MQTT

Bluetooth

LTE-M

#14. In IoT, what is the purpose of a CO2 sensor?

To measure carbon dioxide levels

To process data

To display information

To store data

To provide power

#15. Which of the following is an example of an IoT application in industrial predictive maintenance?

Condition monitoring

Cooking

Social networking

Music production

Interior decoration

#16. What is the primary function of a pressure sensor in an IoT device?

To measure pressure

To process data

To display information

To store data

To provide power

#17. Which IoT communication protocol is commonly used for communication between IoT devices and smartphones?

Bluetooth Low Energy (BLE)

Zigbee

LoRa

NFC (Near Field Communication)

Wi-Fi

#18. In IoT, what is the purpose of a tilt sensor?

To detect changes in orientation

To process data

To display information

To store data

To provide power

#19. Which of the following is an example of an IoT application in smart transportation?

Traffic management

Cooking

Social networking

Music production

Interior decoration

#20. What is the main function of a magnetic sensor in an IoT device?

To detect magnetic fields

To process data

To display information

To store data

To provide power

#1. Which IoT communication protocol is commonly used for communication between IoT devices in industrial automation systems?

#2. What is the main purpose of a strain gauge sensor in an IoT device?

#3. Which of the following is an example of an IoT application in smart retail?

#4. What is the purpose of a Piezoelectric sensor in an IoT device?

#5. Which IoT communication protocol is commonly used for communication between constrained devices and constrained nodes in low-power networks?

#6. In IoT, what is the purpose of a PIR (Passive Infrared) sensor?

#7. Which of the following is an example of an IoT application in smart building automation?

#8. What is the primary function of a gas sensor in an IoT device?

#9. Which IoT communication protocol is commonly used for communication between IoT devices and cloud platforms?

#10. In IoT, what is the purpose of a humidity sensor?

#11. Which of the following is an example of an IoT application in smart energy management?

#12. What is the main function of a gyroscope sensor in an IoT device?

#13. Which IoT communication protocol is commonly used for communication between IoT devices in home automation systems?

#14. In IoT, what is the purpose of a CO2 sensor?

#15. Which of the following is an example of an IoT application in industrial predictive maintenance?

#16. What is the primary function of a pressure sensor in an IoT device?

#17. Which IoT communication protocol is commonly used for communication between IoT devices and smartphones?

#18. In IoT, what is the purpose of a tilt sensor?

#19. Which of the following is an example of an IoT application in smart transportation?

#20. What is the main function of a magnetic sensor in an IoT device?

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