A Utility Company Wants to Collect Usage Data Every 5

question 78

Multiple Choice

A utility company wants to collect usage data every 5 minutes from its smart meters to facilitate time-of-use metering. When a meter sends data to AWS, the data is sent to Amazon API Gateway, processed by an AWS Lambda function and stored in an Amazon DynamoDB table. During the pilot phase, the Lambda functions took from 3 to 5 seconds to complete. As more smart meters are deployed, the Engineers notice the Lambda functions are taking from 1 to 2 minutes to complete. The functions are also increasing in duration as new types of metrics are collected from the devices. There are many ProvisionedThroughputExceededException errors while performing PUT operations on DynamoDB, and there are also many TooManyRequestsException errors from Lambda. Which combination of changes will resolve these issues? (Choose two.)

• A) Increase the write capacity units to the DynamoDB table.
• B) Increase the memory available to the Lambda functions.
• C) Increase the payload size from the smart meters to send more data.
• D) Stream the data into an Amazon Kinesis data stream from API Gateway and process the data in batches.
• E) Collect data in an Amazon SQS FIFO queue, which triggers a Lambda function to process each message.

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Definitions:

Lung Fitness

The health and performance capability of the lungs, impacting overall respiratory function and physical stamina.

Depression

A mental health disorder characterized by persistent feelings of sadness, hopelessness, and a lack of interest or pleasure in activities.

Endorphin Production

The process by which the body generates endorphins, natural painkillers, and pleasure enhancers, often in response to stress or exercise.

Depression

An emotional health disturbance defined by an ongoing low mood or lack of attraction to activities, negatively affecting normal life performance.