An IoT Company Has Rolled Out a Fleet of Sensors

question 172

Multiple Choice

An IoT company has rolled out a fleet of sensors for monitoring temperatures in remote locations. Each device connects to AWS IoT Core and sends a message 30 seconds, updating an Amazon DynamoDB table. A System Administrator users AWS IoT to verify the devices are still sending messages to AWS IoT Core: the database is not updating. What should a Solutions Architect check to determine why the database is not being updated?

• A) Verify the AWS IoT Device Shadow service is subscribed to the appropriate topic and is executing the AWS Lambda function.
• B) Verify that AWS IoT monitoring shows that the appropriate AWS IoT rules are being executed, and that the AWS IoT rules are enabled with the correct rule actions.
• C) Check the AWS IoT Fleet indexing service and verify that the thing group has the appropriate IAM role to update DynamoDB.
• D) Verify that AWS IoT things are using MQTT instead of MQTT over WebSocket, then check that the provisioning has the appropriate policy attached.

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Definitions:

Social Behavior

encompasses the actions and reactions of individuals or groups in interaction with others within a social context.

Status Differences

Disparities among individuals or groups in terms of prestige, authority, or importance within a social hierarchy.

Location Dependent

Referring to services or processes whose utility, availability, or relevance is related to a specific geographical location.

Physical Environment

this refers to the tangible, surrounding conditions or settings in which individuals live or operate, and which can influence their well-being and behavior.