1. What are the steps for connecting devices to Google Cloud Platform?


  • Create a registry, add a topic to it, and add the device. 
  • Create a device, and add it to the registry.
  • Create a registry, add a device, and select a topic for the device.

Yes, when you create a registry you must select a topic for it, then you can add the device.

2. On how many topics can a registry publish?


  • many 
  • one

Yes, a registry can publish to many topics.


3. Which communication protocol can use Cloud IoT Core’s last known heartbeat?


  • MQTT. 
  • HTTP

Yes, devices using MQTT are connected and the last known heartbeat is known.

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