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Answer: AWS Lambda with SQS standard queues, KMS encryption, and kms:Decrypt permission.
The correct answer is A. This solution uses AWS Lambda with SQS standard queues, which is more cost-effective than FIFO queues. It also employs AWS Key Management Service (KMS) for encryption, ensuring security. Moreover, it includes the kms:Decrypt permission for the Lambda execution role, fulfilling the requirement for each request to be processed at least once. This combination provides a secure, reliable, and cost-effective approach for handling asynchronous credit card validation requests.
Author: LeetQuiz Editorial Team
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Which AWS configuration is the most cost-effective for a secure, asynchronous application processing credit card validation requests with at least once delivery guarantee?
A
AWS Lambda with SQS standard queues, KMS encryption, and kms:Decrypt permission.
B
AWS Lambda with SQS FIFO queues, SQS-managed encryption, and encryption key invocation permission.
C
AWS Lambda with SQS FIFO queues, KMS encryption, and kms:Decrypt permission.
D
AWS Lambda with SQS standard queues, KMS encryption, and encryption key invocation permission.
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