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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

Suggested Answer: C 🗳️

by AwsBRFan at Sept. 5, 2022, 6:29 p.m.

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Comments

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pinhead900

Highly Voted 2 years, 11 months 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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nimbus_00

Most Recent 10 months, 1 week ago

Selected Answer: B

Key word: Scheduling While Fargate could work, it is more suited to containerized applications and doesn't offer the batch job scheduling capabilities that AWS Batch provides. AWS Batch also has better handling for compute-intensive, scheduled jobs.

upvoted 1 times

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rodrod

1 year, 11 months ago

Selected Answer: C

C is the answer

upvoted 1 times

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pitakk

2 years, 6 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

2 years, 7 months ago

Selected Answer: B

I'll go with B Why not C-> It says "Fargate task" and not "ECS tasks" using Fargate.

upvoted 4 times

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Jonfernz

2 years, 9 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

2 years, 9 months ago

Answer B https://docs.aws.amazon.com/AmazonECS/latest/developerguide/scheduled_tasks.html

upvoted 1 times

fais1985

2 years, 9 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, 10 months 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, 10 months 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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