Internet of Things MCQS – Page 5

#1. Which IoT communication protocol is commonly used for communication between IoT devices in agriculture?

LoRa

Zigbee

MQTT

Bluetooth

Wi-Fi

#2. In IoT, what is the purpose of a sound sensor?

To detect sound levels

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 water management?

Leak detection

Cooking

Social networking

Music production

Interior decoration

#4. What is the primary function of a proximity sensor in an IoT device?

To detect the presence or absence of an object or material

To process data

To display information

To store data

To provide power

#5. Which IoT communication protocol is commonly used for communication between IoT devices and cloud services?

MQTT

CoAP

HTTP

Modbus

OPC UA (Unified Architecture)

#6. In IoT, what is the purpose of a flame sensor?

To detect the presence of flames

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 environmental monitoring?

Air quality monitoring

Cooking

Social networking

Music production

Interior decoration

#8. What is the main function of a tilt switch in an IoT device?

To detect changes in orientation

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 in healthcare?

Bluetooth Low Energy (BLE)

MQTT

CoAP

Zigbee

LoRa

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

To detect vibrations or oscillations

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 lighting?

Lighting control

Cooking

Social networking

Music production

Interior decoration

#12. What is the primary function of an ultrasonic sensor in an IoT device?

To measure distance or detect objects using sound waves

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 smart grid systems?

DNP3 (Distributed Network Protocol 3)

Modbus

MQTT

CoAP

OPC UA (Unified Architecture)

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

To detect and measure colors

To process data

To display information

To store data

To provide power

#15. What is the main function of a tilt sensor in an IoT device?

To detect changes in orientation

To process data

To display information

To store data

To provide power

#16. Which IoT communication protocol is commonly used for communication between IoT devices in asset tracking systems?

MQTT

CoAP

LoRa

Zigbee

Modbus

#17. In IoT, what is the purpose of a pH sensor?

To measure the acidity or alkalinity of a solution

To process data

To display information

To store data

To provide power

#18. Which of the following is an example of an IoT application in smart parking?

Parking space availability

Cooking

Social networking

Music production

Interior decoration

#19. What is the primary function of a soil moisture sensor in an IoT device?

To measure the moisture content in the soil

To process data

To display information

To store data

To provide power

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