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Practice AWS Solutions Architect Professional (SAP-C02)AWS Solutions Architect Professional SAP-C02 Practice Exam 3Question 40

Medium1 markMultiple Choice

Domain 3.3: Performance ImprovementPerformanceDynamoDBCaching

AWS SAP-C02 · Question 40 · Domain 3.3: Performance Improvement

An application uses Amazon DynamoDB. A specific read-heavy query is causing throttling and high costs. The data changes infrequently. How can the architect improve performance and reduce costs with minimal code changes?

Answer options:

A.

Migrate the data to Amazon ElastiCache for Redis.

B.

Implement Amazon DynamoDB Accelerator (DAX).

C.

Increase the Read Capacity Units (RCUs) on the table.

D.

Use Amazon CloudFront to cache the database queries.

How to approach this question

Identify the caching solution native to DynamoDB.

Full Answer

B.Implement Amazon DynamoDB Accelerator (DAX).✓ Correct

Implement Amazon DynamoDB Accelerator (DAX).

DAX is a fully managed, highly available, in-memory cache for DynamoDB that delivers up to a 10x performance improvement.

Common mistakes

Choosing ElastiCache, which requires rewriting the data access layer.

Question 39 All questions Question 41

Practice the full AWS Solutions Architect Professional SAP-C02 Practice Exam 3

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