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An IoT gateway is an essential component in an IoT ecosystem. It acts as an intermediary, connecting IoT devices such as sensors, actuators, and smart appliances to cloud platforms or data centers. The primary role of the gateway is to facilitate secure and efficient bidirectional communication . It aggregates data from devices and transmits it to the cloud for storage or analysis. Additionally, it can relay instructions from cloud-based systems back to the devices. IoT gateways often handle protocol translation, as devices within an IoT network may use varied communication protocols like MQTT, CoAP, or Zigbee. Furthermore, gateways may perform edge computing tasks, processing data locally to reduce latency and bandwidth usage before sending critical data to the cloud. For example, in industrial IoT applications, gateways preprocess sensor data to enable real-time monitoring and control. Why Other Options Are Incorrect: · Option A: Endpoint devices such as sensors or actuators collect data directly from the environment. Gateways aggregate and transmit this data but do not function as endpoints. · Option C: Gateways are not primarily designed for data storage. While they may have limited storage for caching, large-scale data storage is handled by cloud services or on-premise data centers. · Option D: Firmware updates are often managed by IoT device management platforms, not the gateway itself. · Option E: Gateways may facilitate edge computing, but complex AI tasks are usually handled by dedicated processors or cloud services.
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