Internet of Things (IoT) Practice Exam 2025 – Comprehensive Prep Resource

The primary purpose of a sensor in an IoT system is to collect data from the environment. Sensors are designed to detect physical phenomena, such as temperature, humidity, motion, light, and other variables, and convert this information into data that can be processed and analyzed. This data collection is essential for IoT applications, as it provides the raw information needed for monitoring systems, automation, and informed decision-making.

In the context of IoT, sensors act as the eyes and ears of the system, enabling it to interact with the physical world. They gather real-time data, which can be communicated to other devices or centralized systems for further analysis. The accurate and timely collection of this data is critical for the effectiveness and efficiency of IoT applications, such as smart homes, industrial automation, and environmental monitoring. Thus, the role of sensors is foundational to the functionality of any IoT system.