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Exam AWS Certified Solutions Architect - Associate SAA-C02 topic 1 question 691 discussion

Exam question from Amazon's AWS Certified Solutions Architect - Associate SAA-C02
Question #: 691
Topic #: 1
[All AWS Certified Solutions Architect - Associate SAA-C02 Questions]

A solutions architect is designing a multi-tier application for a company. The application's users upload images from a mobile device. The application generates a thumbnail of each image and returns a message to the user to confirm that the image was uploaded successfully.
The thumbnail generation can take up to 60 seconds, but the company wants to provide a faster response time to its users to notify them that the original image was received. The solutions architect must design the application to asynchronously dispatch requests to the different application tiers.
What should the solutions architect do to meet these requirements?

  • A. Write a custom AWS Lambda function to generate the thumbnail and alert the user. Use the image upload process as an event source to invoke the Lambda function.
  • B. Create an AWS Step Functions workflow. Configure Step Functions to handle the orchestration between the application tiers and alert the user when thumbnail generation is complete.
  • C. Create an Amazon Simple Queue Service (Amazon SQS) message queue. As images are uploaded, place a message on the SQS queue for thumbnail generation. Alert the through an application message that the image was received.
  • D. Create Amazon Simple Notification Service (Amazon SNS) notification topics and subscriptions. Use one subscription with the application to generate the thumbnail after the image upload is complete. Use a second subscription to message the user's mobile app by way of a push notification after thumbnail generation is complete.
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Suggested Answer: C 🗳️
by guptatrng at Sept. 9, 2022, 12:57 p.m.
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BECAUSE
1 year, 11 months ago
Selected Answer: D
D is the answer
upvoted 1 times
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sassy2023
2 years, 3 months ago
D is correct
upvoted 1 times
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orbpig
2 years, 6 months ago
Selected Answer: C
C is right
upvoted 1 times
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orbpig
2 years, 6 months ago
C D syas "Use a second subscription to message the user's mobile app by way of a push notification after thumbnail generation is complete" is not faster than C. this way user can only receive message after generating the thumbnail. but for C, the user can receive message as soon as the message is uploaded and put in the SQS.
upvoted 1 times
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Ekie
2 years, 7 months ago
D. SNS fan out... SNS can send notification
upvoted 1 times
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nymets
2 years, 7 months ago
Selected Answer: C
I will choose C. "D" does not have any workflow for notifying that the message is received, prior to thumbnail generation, which is what the question is about.
upvoted 3 times
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guptatrng
2 years, 8 months ago
poorly formatted question and answers. Fan out can apply here, will go for D..
upvoted 1 times
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