Internet of Things (IoT) Practice Exam

What type of devices are the power supplies?

1. Sensor

2. Actuator

3. Control

4. None of the above

The correct answer is: None of the above

Power supplies are classified as components that provide electrical energy to power electronic devices but do not fall into the categories of sensors, actuators, or control devices. Sensors are devices that collect data from the environment, such as temperature or humidity readings. Actuators are components that perform actions or control movements, usually in response to input signals. Control devices act to manage and direct how systems operate, often processing the data from sensors and sending commands to actuators. Since power supplies do not perform any of these functions but instead serve the purpose of supplying power to these other devices, they do not fit into the specified categories. Therefore, identifying power supplies as falling under "None of the above" is accurate, reflecting their distinct role in the IoT ecosystem.