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Exam AWS Certified Developer - Associate DVA-C02 topic 1 question 531 discussion

Exam question from Amazon's AWS Certified Developer - Associate DVA-C02
Question #: 531
Topic #: 1
[All AWS Certified Developer - Associate DVA-C02 Questions]

A company has an application that runs on Amazon EC2 instances. The application needs to use dynamic feature flags that will be shared with other applications. The application must poll on an interval for new feature flag values. The values must be cached when they are retrieved.

Which solution will meet these requirements in the MOST operationally efficient way?

  • A. Store the feature flag values in AWS Secrets Manager. Configure an Amazon ElastiCache node to cache the values by using a lazy loading strategy in the application. Update the application to poll for the values on an interval from ElastiCache.
  • B. Store the feature flag values in an Amazon DynamoDB table. Configure DynamoDB Accelerator (DAX) to cache the values by using a lazy loading strategy in the application. Update the application to poll for the values on an interval from DynamoDB.
  • C. Store the feature flag values in AWS AppConfig. Configure AWS AppConfig Agent on the EC2 instances to poll for the values on an interval. Update the application to retrieve the values from the AppConfig Agent localhost endpoint.
  • D. Store the feature flag values in AWS Systems Manager Parameter Store. Configure the application to poll on an interval. Configure the application to use the AWS SDK to retrieve the values from Parameter Store and to store the values in memory.
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Suggested Answer: C ๐Ÿ—ณ๏ธ
by 0bdf3af at March 4, 2025, 9:01 a.m.
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devOpsihc
1ย month ago
Selected Answer: C
์ •๋‹ต์€ C์ž…๋‹ˆ๋‹ค. EC2 ์ธ์Šคํ„ด์Šค์—์„œ AWS AppConfig Agent๋ฅผ ๊ตฌ์„ฑํ•˜์—ฌ ๊ฐ„๊ฒฉ์— ๋”ฐ๋ผ ๊ฐ’์„ ํด๋งํ•ฉ๋‹ˆ๋‹ค. AppConfig Agent ๋กœ์ปฌ ํ˜ธ์ŠคํŠธ ์—”๋“œํฌ์ธํŠธ์—์„œ ๊ฐ’์„ ๊ฒ€์ƒ‰ํ•˜๋„๋ก ์• ํ”Œ๋ฆฌ์ผ€์ด์…˜์„ ์—…๋ฐ์ดํŠธํ•ฉ๋‹ˆ๋‹ค. ์ž…๋‹ˆ๋‹ค.
upvoted 1 times
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0bdf3af
2ย months ago
Selected Answer: B
DAX as a cache requires no application changes. DynamoDB is a way to share values between applications
upvoted 1 times
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