Which model describes direct communication from IoT device to cloud without an intermediary gateway?

Which model describes direct communication from IoT device to cloud without an intermediary gateway?

• A. Cloud-to-Cloud Communication Model
• B. Device-to-Cloud Communication Model
• C. Device-to-Device Communication Model
• D. Device-to-Gateway Communication Model

Answer: (B)

Direct device-to-cloud communication occurs when an IoT device connects directly to cloud services without routing through a gateway. In this setup the device talks straight to the cloud, sending data and receiving commands over the internet using protocols like MQTT, HTTP, or CoAP. This contrasts with models that involve intermediaries: a gateway sits between the device and the cloud, translating or aggregating data before forwarding it; cloud-to-cloud involves communication between cloud services; and device-to-device involves devices talking to each other without cloud involvement. Because the question specifies no intermediary gateway, the direct path from the device to the cloud is exactly the device-to-cloud communication model.

Direct device-to-cloud communication occurs when an IoT device connects directly to cloud services without routing through a gateway. In this setup the device talks straight to the cloud, sending data and receiving commands over the internet using protocols like MQTT, HTTP, or CoAP. This contrasts with models that involve intermediaries: a gateway sits between the device and the cloud, translating or aggregating data before forwarding it; cloud-to-cloud involves communication between cloud services; and device-to-device involves devices talking to each other without cloud involvement. Because the question specifies no intermediary gateway, the direct path from the device to the cloud is exactly the device-to-cloud communication model.