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Exam AWS Certified Developer - Associate DVA-C02 topic 1 question 398 discussion

Exam question from Amazon's AWS Certified Developer - Associate DVA-C02
Question #: 398
Topic #: 1
[All AWS Certified Developer - Associate DVA-C02 Questions]

A company that has large online business uses an Amazon DynamoDB table to store sales data. The company enabled Amazon DynamoDB Streams on the table. The transaction status of each sale is stored in a TransactionStatus attribute in the table. The value of the TransactionStatus attribute must be either failed, pending, or completed.

The company wants to be notified of failed sales where the Price attribute is above a specific threshold. A developer needs to set up notification for the failed sales.

Which solution will meet these requirements with the LEAST development effort?

  • A. Create an event source mapping between DynamoDB Streams and an AWS Lambda function. Use Lambda event filtering to trigger the Lambda function only if sales fail when the price is above the specified threshold. Configure the Lambda function to publish the data to an Amazon Simple Notification Service (Amazon SNS) topic.
  • B. Create an event source mapping between DynamoDB Streams and an AWS Lambda function. Configure the Lambda function handler code to publish to an Amazon Simple Notification Service (Amazon SNS) topic if sales fail when price is above the specified threshold.
  • C. Create an event source mapping between DynamoDB Streams and an Amazon Simple Notification Service (Amazon SNS) topic. Use event filtering to publish to the SNS topic if sales fail when the price is above the specified threshold.
  • D. Create an Amazon CloudWatch alarm to monitor the DynamoDB Streams sales data. Configure the alarm to publish to an Amazon Simple Notification Service (Amazon SNS) topic if sales fail due when price is above the specified threshold.
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Suggested Answer: A 🗳️
by Anandesh at July 5, 2024, 2:10 p.m.
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tomchandler077
12 hours, 35 minutes ago
A By using event filtering, the Lambda function will only be triggered if the conditions (TransactionStatus is 'failed' and Price is above the specified threshold) are met. This reduces unnecessary executions and simplifies the logic within the function.
upvoted 1 times
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Anandesh
2 days, 16 hours ago
Selected Answer: C
dynamodb can be mapped as an event source to SNS. While creating the table, we can turn the stream on. We can push events to SNS topic and apply filter policy
upvoted 1 times
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