Internet of Things (IoT) Practice Exam

What key role do IoT gateways play in the data transmission process?

1. Data storage

2. Data analysis

3. Data filtering

4. Data backup

The correct answer is: Data filtering

IoT gateways serve a crucial role in the data transmission process primarily by acting as a point of aggregation and management for data generated by various IoT devices. They are responsible for data filtering, which means they collect and consolidate data from multiple devices and can apply specific criteria to determine what data is relevant before it is sent to a cloud or central server for further analysis or storage. Filtering helps reduce the amount of data being transmitted, which is essential for optimizing network performance and minimizing latency. By ensuring that only relevant and necessary data is forwarded, IoT gateways enhance the efficiency of communication within IoT networks. This function is vital, especially in scenarios where bandwidth is limited or costs associated with data transmission are a concern. Data storage refers to the retention of data for future access, data analysis involves processing and interpreting data to gain insights, and data backup pertains to making copies of data for recovery purposes. While these functions may be part of a larger IoT ecosystem, they are not the primary role of IoT gateways in the context of data transmission. The focus on data filtering highlights the importance of managing data flow effectively in IoT applications.