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Exam AWS Certified Solutions Architect - Professional topic 1 question 889 discussion

Exam question from Amazon's AWS Certified Solutions Architect - Professional
Question #: 889
Topic #: 1
[All AWS Certified Solutions Architect - Professional Questions]

A company runs a proprietary stateless ETL application on an Amazon EC2 Linux instances. The application is a Linux binary, and the source code cannot be modified. The application is single-threaded, uses 2 GB of RAM, and is highly CPU intensive. The application is scheduled to run every 4 hours and runs for up to
20 minutes. A solutions architect wants to revise the architecture for the solution.
Which strategy should the solutions architect use?

  • A. Use AWS Lambda to run the application. Use Amazon CloudWatch Logs to invoke the Lambda function every 4 hours.
  • B. Use AWS Batch to run the application. Use an AWS Step Functions state machine to invoke the AWS Batch job every 4 hours.
  • C. Use AWS Fargate to run the application. Use Amazon EventBridge (Amazon CloudWatch Events) to invoke the Fargate task every 4 hours.
  • D. Use Amazon EC2 Spot Instances to run the application. Use AWS CodeDeploy to deploy and run the application every 4 hours.
Show Suggested Answer Hide Answer
Suggested Answer: C 🗳️
by AwsBRFan at Sept. 5, 2022, 6:29 p.m.
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pinhead900
Highly Voted 2 years ago
Selected Answer: C
probably C, step function could run a scheduled task when triggered by eventbrige, but why would you add that layer of complexity just to run aws batch when you could directly invoke it through eventbridge. The link provided - https://aws.amazon.com/pt/blogs/compute/orchestrating-high-performance-computing-with-aws-step-functions-and-aws-batch/ makes sense only for HPC, this is a single instance that needs to be run
upvoted 10 times
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rodrod
Most Recent 1 year ago
Selected Answer: C
C is the answer
upvoted 1 times
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pitakk
1 year, 8 months ago
Selected Answer: B
https://docs.aws.amazon.com/step-functions/latest/dg/connect-batch.html It's B
upvoted 2 times
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evargasbrz
1 year, 9 months ago
Selected Answer: B
I'll go with B Why not C-> It says "Fargate task" and not "ECS tasks" using Fargate.
upvoted 3 times
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Jonfernz
1 year, 11 months ago
Selected Answer: C
A & D don't make sense. As for B --- it's wrong for two reasons. Firstly, this is just a single job ... you don't an added workflow by using StepFunctions. Secondly, Step Functions cannot be scheduled. Even if you want to use it for this case, you would at least need to use CloudWatch Events to trigger the process. C solves everything and is this only feasible option.
upvoted 2 times
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fais1985
1 year, 11 months ago
Answer B https://docs.aws.amazon.com/AmazonECS/latest/developerguide/scheduled_tasks.html
upvoted 1 times
fais1985
1 year, 11 months ago
Sorry its C via Fargate https://docs.aws.amazon.com/AmazonECS/latest/developerguide/scheduled_tasks.html
upvoted 1 times
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dcdcdc3
2 years ago
Selected Answer: B
I would like to go with B: https://docs.aws.amazon.com/prescriptive-guidance/latest/patterns/orchestrate-an-etl-pipeline-with-validation-transformation-and-partitioning-using-aws-step-functions.html as the question is asking for an ETL solution Maybe the incorrect piece in C is around invoking a "Fargate task" every 4 hours where it should be invoke "ECS task" (aka your app) every 4 hours
upvoted 3 times
dcdcdc3
2 years ago
Or maybe because source code cannot be modified, we are stuck with a fargate container with unclear answer C and we cannot re-architect the solution to B ?.?
upvoted 1 times
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Yashar1691
2 years ago
Selected Answer: B
https://docs.aws.amazon.com/step-functions/latest/dg/connect-batch.html
upvoted 1 times
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kapara
2 years ago
Selected Answer: C
C. those who say B - how can step function state can run schedule task?
upvoted 4 times
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cale
2 years ago
Selected Answer: B
It is B.
upvoted 1 times
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AwsBRFan
2 years, 1 month ago
Selected Answer: B
B considering this link https://aws.amazon.com/pt/blogs/compute/orchestrating-high-performance-computing-with-aws-step-functions-and-aws-batch/
upvoted 1 times
rodrod
1 year ago
Step function can call batch but not on a scheduled basis. It requires a trigger like eventbridge So B is a distractor....
upvoted 1 times
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AwsBRFan
2 years, 1 month ago
Selected Answer: C
Maybe C https://aws.amazon.com/pt/blogs/compute/orchestrating-high-performance-computing-with-aws-step-functions-and-aws-batch/
upvoted 3 times
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