DVA-C02 · Question #306
DVA-C02 Question #306: Real Exam Question with Answer & Explanation
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Question
A developer is investigating an issue in part of a company's application. In the application, messages are sent to an Amazon Simple Queue Service (Amazon SQS) queue. The AWS Lambda function polls messages from the SQS queue and sends email messages by using Amazon Simple Email Service (Amazon SES). Users have been receiving duplicate email messages during periods of high traffic. Which reasons could explain the duplicate email messages? (Choose two.)
Options
- AStandard SQS queues support at-least-once message delivery.
- BStandard SQS queues support exactly-once processing, so the duplicate email messages are
- CAmazon SES has the DomainKeys Identified Mail (DKIM) authentication incorrectly configured.
- DThe SQS queue's visibility timeout is lower than or the same as the Lambda function's timeout.
- EThe Amazon SES bounce rate metric is too high.
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