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Exam AWS Certified Solutions Architect - Associate SAA-C03 topic 1 question 752 discussion

Exam question from Amazon's AWS Certified Solutions Architect - Associate SAA-C03
Question #: 752
Topic #: 1
[All AWS Certified Solutions Architect - Associate SAA-C03 Questions]

A company has a multi-tier payment processing application that is based on virtual machines (VMs). The communication between the tiers occurs asynchronously through a third-party middleware solution that guarantees exactly-once delivery.

The company needs a solution that requires the least amount of infrastructure management. The solution must guarantee exactly-once delivery for application messaging.

Which combination of actions will meet these requirements? (Choose two.)

  • A. Use AWS Lambda for the compute layers in the architecture.
  • B. Use Amazon EC2 instances for the compute layers in the architecture.
  • C. Use Amazon Simple Notification Service (Amazon SNS) as the messaging component between the compute layers.
  • D. Use Amazon Simple Queue Service (Amazon SQS) FIFO queues as the messaging component between the compute layers.
  • E. Use containers that are based on Amazon Elastic Kubernetes Service (Amazon EKS) for the compute layers in the architecture.
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Suggested Answer: AD 🗳️
by hajra313 at Feb. 8, 2024, 11 p.m.
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osmk
Highly Voted 1 year, 1 month ago
Selected Answer: AD
https://docs.aws.amazon.com/AWSSimpleQueueService/latest/SQSDeveloperGuide/FIFO-queues-exactly-once-processing.html
upvoted 6 times
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Scheldon
Highly Voted 9 months, 1 week ago
Selected Answer: AD
AnswerAD, SQS FIFO will guarantee exactly one time execution for each operation. The problem is with processing as we do not know if whole process will be closed in 15 min (TTL for Lambda). I'm choosing Lambda as it is natural thing for Payment procesing in AWS but I'm not 100% sure
upvoted 5 times
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tch
Most Recent 3 months, 1 week ago
Selected Answer: AD
SQS is helpful for Asynchronous processing workflows.
upvoted 1 times
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MatAlves
6 months, 1 week ago
Selected Answer: AD
"As its name suggests, exactly-once semantics means that each message is delivered precisely once. The message can neither be lost nor delivered twice (or more times)." - SNS doesn't provide exactly-once delivery. Thus, we need SQS. - To achieve "least amount of intra management", we go with Lambda for compute layer.
upvoted 2 times
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Sivaeas
1 year ago
Selected Answer: AD
Lamdba+SQS FIFO
upvoted 4 times
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PolarFox
1 year, 1 month ago
someone please explain why the combination of D and E is not the correct?
upvoted 2 times
stephensimudemy
1 year, 1 month ago
because qn says 'least amount of infrastructure management'. E is not.
upvoted 2 times
JA2018
4 months ago
While EKS can provide scalability, it still requires managing container infrastructure. This adds complexity (more overhead in infra mgmt than A) to the solution
upvoted 1 times
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jaswantn
1 year, 1 month ago
option A for payment processing. option D for exactly once delivery.
upvoted 2 times
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Umuntu
1 year, 1 month ago
CD IS THE BEST ANSWER
upvoted 1 times
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hajra313
1 year, 1 month ago
a and d
upvoted 3 times
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