Introduction to IoT devices MCQs December 24, 2025November 20, 2024 by u930973931_answers 20 min Score: 0 Attempted: 0/20 Subscribe 1. . What does IoT stand for? (A) Internet of Technology (B) Internet of Things (C) Intelligent Object Transmission (D) Integrated Operations Technology 2. . Which of the following is a key feature of an IoT device? (A) Ability to communicate over the internet (B) High power consumption (C) Requires no sensors or actuators (D) Limited connectivity to external devices 3. . What is the main purpose of IoT devices in smart homes? (A) To improve internet speed (B) To enable automated control of home appliances and systems (C) To make the home more secure by blocking internet access (D) To reduce power consumption of traditional electronics 4. . Which of the following is NOT typically found in an IoT device? (A) Sensors (B) Actuators (C) Data storage systems (D) A display screen 5. . What is the role of sensors in an IoT device? (A) Collect environmental data and send it to other devices (B) Process data from external sources (C) Control power usage (D) Store large amounts of data for long periods 6. . What is an actuator used for in IoT devices? (A) Collecting data from the environment (B) Converting electrical signals into physical actions (C) Connecting devices to the internet (D) Processing data 7. . Which of the following protocols is commonly used for communication between IoT devices? (A) HTTP (B) MQTT (C) FTP (D) SMTP 8. . Which of the following is a low-power communication protocol for IoT devices? (A) Bluetooth (B) Zigbee (C) Wi-Fi (D) Ethernet 9. . Which of the following technologies is primarily used for long-range IoT communication? (A) LoRaWAN (B) Bluetooth (C) Zigbee (D) NFC 10. . Which of the following is an example of an IoT device application in healthcare? (A) Smart thermostats for energy saving (B) Wearable health monitors to track vitals (C) Smart refrigerators to track groceries (D) Smart speakers for controlling home appliances 11. . In agriculture, IoT devices can be used to: (A) Monitor soil moisture and crop health (B) Replace traditional farming techniques (C) Automate human decision-making (D) Forecast long-term weather patterns 12. . Smart city technologies often use IoT devices for which purpose? (A) To control building lighting and waste management (B) To monitor user internet activity (C) To build personal websites (D) To enhance video game performance 13. . What is a major concern for IoT devices that are battery-powered? (A) High data processing speed (B) Overheating due to long usage (C) Limited battery life and energy efficiency (D) Slow internet connection 14. . Which of the following is a key challenge in securing IoT devices? (A) Ensuring devices can communicate faster (B) Managing device connections and data privacy (C) Reducing the size of the devices (D) Increasing battery life 15. . What is the function of encryption in IoT devices? (A) To increase device processing speed (B) To secure data transmission and protect against unauthorized access (C) To reduce power consumption (D) To manage device updates remotely 16. . In an IoT system, where is the collected data typically sent for processing and analysis? (A) To a local database (B) To a cloud server or data center (C) To an external storage device (D) To the user’s personal device 17. . Which of the following best describes a “smart” IoT device? (A) A device that does not require a power supply (B) A device that can analyze data and make decisions autonomously (C) A device that is designed for only one function (D) A device that connects to only one other device 18. . Which of the following is an emerging trend for IoT devices in the future? (A) Limited connectivity to improve security (B) Increased use of artificial intelligence and machine learning for autonomous decision-making (C) Decrease in the use of sensors (D) Reduced focus on data privacy 19. . Which industry is likely to benefit the most from the implementation of IoT in the coming years? (A) Entertainment (B) Manufacturing and industrial automation (C) Retail packaging (D) Music and media 20. . How does 5G technology support the growth of IoT devices? (A) By providing faster data transfer speeds and more reliable connections (B) By reducing the number of devices in use (C) By minimizing the power consumption of IoT devices (D) By requiring no internet connection for IoT devices