devices getting disconnected and connected again to the internet intermittently. However, even IOT devices are disconnected from the internet, they still want to check the state of that disconnected IOT device. Which
of the following can be helpful for this requirement?
1. You will be using Private Network connection with each IOT device
2. You will be using Satellite connection
3. You will be using backup IoT device
4. You will be using Device Shadow
Correct Answer : 4 Exp : A devices shadow is a JSON document that is used to store and retrieve current state information for a device. The Device Shadow service maintains a shadow for each device you connect to AWS
IoT. You can use the shadow to get and set the state of a device over MQTT or HTTP, regardless of whether the device is connected to the Internet. Each devices shadow is uniquely identified by the name of the
corresponding thing.
4
