Exam AWS Certified Solutions Architect - Professional SAP-C02 topic 1 question 421 discussion

Exam question from Amazon's AWS Certified Solutions Architect - Professional SAP-C02

Question #: 421
Topic #: 1

[All AWS Certified Solutions Architect - Professional SAP-C02 Questions]

A company has a web application that uses Amazon API Gateway. AWS Lambda, and Amazon DynamoDB. A recent marketing campaign has increased demand. Monitoring software reports that many requests have significantly longer response times than before the marketing campaign.

A solutions architect enabled Amazon CloudWatch Logs for API Gateway and noticed that errors are occurring on 20% of the requests. In CloudWatch, the Lambda function Throttles metric represents 1% of the requests and the Errors metric represents 10% of the requests. Application logs indicate that, when errors occur, there is a call to DynamoDB.

What change should the solutions architect make to improve the current response times as the web application becomes more popular?

A. Increase the concurrency limit of the Lambda function.
B. Implement DynamoDB auto scaling on the table.
C. Increase the API Gateway throttle limit.
D. Re-create the DynamoDB table with a better-partitioned primary index.

Show Suggested Answer

Suggested Answer: B 🗳️

by alexis123456 at Feb. 5, 2024, 7:29 p.m.

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Comments

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Al8282

4 days, 22 hours ago

Selected Answer: B

Remember DynamoDB has provisioned capacity and autoscaling is still useful for that, even if on demand automatically scales up and down for you.

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juanife

5 months, 2 weeks ago

Selected Answer: B

without any doubt it's b, since the error is related to calls against dynamodb when traffic spike ocurrs

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AzureDP900

8 months, 3 weeks ago

Option B is right. Auto scaling for DynamoDB can help ensure that your table is always provisioned with enough capacity to handle incoming requests, which in turn can help prevent throttle limit exceeds. By automatically adjusting the provisioned capacity of your table based on actual usage patterns, you can maintain optimal performance and responsiveness, even during periods of high traffic or demand.

upvoted 1 times

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