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Which layer serves as the foundation for IoT devices to send data to the cloud?

  1. Application layer

  2. Network layer

  3. Sensor layer

  4. Gateway layer

The correct answer is: Network layer

The network layer functions as a crucial foundation for IoT devices to transmit data to the cloud. It is responsible for establishing the communication pathways by which data travels from the devices to cloud services. This layer handles the routing and transferring of data packets across the internet or other network infrastructures, ensuring that the data collected from IoT devices reaches the intended destination effectively and efficiently. In the context of IoT, the network layer facilitates various protocols and technologies to connect devices over local or wide-area networks. This includes supporting different data transmission methods such as Wi-Fi, cellular, or satellite communications, enabling robust connectivity. Effective data transfer relies on a reliable network layer that can address issues related to bandwidth, latency, and security, making it essential for the overall performance of the IoT ecosystem.