A Machine Learning Specialist Stores IoT Soil Sensor Data in Amazon

question 25

Multiple Choice

A machine learning specialist stores IoT soil sensor data in Amazon DynamoDB table and stores weather event data as JSON files in Amazon S3. The dataset in DynamoDB is 10 GB in size and the dataset in Amazon S3 is 5 GB in size. The specialist wants to train a model on this data to help predict soil moisture levels as a function of weather events using Amazon SageMaker. Which solution will accomplish the necessary transformation to train the Amazon SageMaker model with the LEAST amount of administrative overhead?

• A) Launch an Amazon EMR cluster. Create an Apache Hive external table for the DynamoDB table and S3 data. Join the Hive tables and write the results out to Amazon S3.
• B) Crawl the data using AWS Glue crawlers. Write an AWS Glue ETL job that merges the two tables and writes the output to an Amazon Redshift cluster.
• C) Enable Amazon DynamoDB Streams on the sensor table. Write an AWS Lambda function that consumes the stream and appends the results to the existing weather files in Amazon S3.
• D) Crawl the data using AWS Glue crawlers. Write an AWS Glue ETL job that merges the two tables and writes the output in CSV format to Amazon S3.

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Definitions:

Psychological Demands

The mental effort required to complete tasks or fulfill roles, often involving intellectual ability, emotional effort, and coping with stress.

Stress

A physical, mental, or emotional strain or tension resulting from adverse or demanding circumstances.

Stress Reactions

Physical, mental, or emotional responses to perceived threats, challenges, or harmful events.

Perception

The process of organizing and interpreting sensory information to make it meaningful.