1. What does IoT stand for?
(A) Internet of Things
(B) Input of Technology
(C) Internet over Transceivers
(D) Integrated Online Tools
2. The main goal of IoT is to:
(A) Connect devices for data exchange and automation
(B) Increase manual control
(C) Replace the Internet
(D) Store offline data
3. Which of the following is an example of an IoT application?
(A) Smart home system
(B) Manual switchboard
(C) Analog voltmeter
(D) Cathode ray oscilloscope
4. Which protocol is commonly used for IoT communication?
(A) MQTT
(B) HTTP only
(C) POP3
(D) SMTP
5. In IoT, sensors are mainly used to:
(A) Collect environmental or physical data
(B) Control actuators
(C) Store information
(D) Transmit high-power signals
6. Actuators in IoT systems are used for:
(A) Performing actions based on control signals
(B) Storing sensor data
(C) Amplifying network signals
(D) Encoding digital data
7. Which network is most commonly used for home IoT devices?
(A) Wi-Fi
(B) Ethernet
(C) GSM
(D) Fiber optic
8. Which technology is used for short-range IoT communication?
(A) Bluetooth
(B) Satellite
(C) Microwave
(D) Infrared
9. Which of the following is an example of a wearable IoT device?
(A) Smartwatch
(B) Laptop
(C) Server
(D) Router
10. What does “automation” refer to in IoT?
(A) Performing tasks automatically without human intervention
(B) Manual monitoring of devices
(C) Increasing human workload
(D) Turning devices off manually
11. A smart thermostat adjusts:
(A) Room temperature automatically
(B) Fan speed manually
(C) Lighting brightness
(D) Humidity only
12. Which component connects IoT devices to the cloud?
(A) Gateway
(B) Transistor
(C) Capacitor
(D) LED
13. In IoT, the cloud is used for:
(A) Data storage and processing
(B) Generating electricity
(C) Cooling systems
(D) Power control
14. Which of the following is a communication protocol used in industrial IoT?
(A) Modbus
(B) HDMI
(C) VGA
(D) I2S
15. In automation, PLC stands for:
(A) Programmable Logic Controller
(B) Power Line Communication
(C) Personal Logic Computer
(D) Peripheral Logic Circuit
16. The primary function of a PLC in automation is to:
(A) Control machines and processes automatically
(B) Transmit analog signals
(C) Provide data storage
(D) Power the sensors
17. Which microcontroller is commonly used in IoT projects?
(A) ESP8266
(B) 8085
(C) 8051
(D) PIC16F84
18. Which of the following is an industrial automation network protocol?
(A) PROFIBUS
(B) HTTP
(C) SMTP
(D) POP3
19. Which technology allows IoT devices to communicate over cellular networks?
(A) NB-IoT
(B) Wi-Fi
(C) Zigbee
(D) Bluetooth
20. The “edge computing” concept in IoT refers to:
(A) Processing data near the source device
(B) Sending all data to the cloud
(C) Storing data offline
(D) Only controlling actuators
21. What is the main purpose of IoT analytics?
(A) Extract useful insights from collected data
(B) Convert data into analog form
(C) Filter noise from signals
(D) Amplify network strength
22. A smart grid is an IoT application used in:
(A) Electrical power distribution
(B) Water management
(C) Waste disposal
(D) Transportation
23. Which IoT layer deals with sensors and actuators?
(A) Perception layer
(B) Network layer
(C) Application layer
(D) Security layer
24. A SCADA system is primarily used for:
(A) Supervisory control and data acquisition
(B) Audio signal processing
(C) Video compression
(D) Network routing
25. Which of the following is an IoT communication protocol designed for constrained devices?
(A) CoAP
(B) FTP
(C) SMTP
(D) POP3
26. In automation, a robotic arm is an example of:
(A) Actuator-based system
(B) Sensor-based system
(C) Power supply
(D) Controller unit
27. Smart agriculture uses IoT for:
(A) Monitoring soil and crop conditions
(B) Manual irrigation
(C) Increasing chemical use
(D) Energy storage
28. The main advantage of IoT-based automation is:
(A) Real-time monitoring and control
(B) Higher manual effort
(C) Increased delay in response
(D) No connectivity
29. In IoT, “interoperability” refers to:
(A) Ability of different devices to work together
(B) Device shutdown feature
(C) Network isolation
(D) Reduced bandwidth
30. A smart city application of IoT includes:
(A) Intelligent traffic management
(B) Manual street lighting
(C) Paper-based billing
(D) Analog water meters