AWS Certified Developer – Associate — Question 43

An application is using Amazon DynamoDB as its data store, and should be able to read 100 items per second as strongly consistent reads. Each item is 5 KB in size.
To what value should the table's provisioned read throughput be set?

Answer options

• A. 50 read capacity units
• B. 100 read capacity units
• C. 200 read capacity units
• D. 500 read capacity units

Correct answer: C

Explanation

The correct answer is C, as each strongly consistent read of a 5 KB item consumes 2 read capacity units. Therefore, for 100 items, the required read capacity is 100 items * 2 units/item = 200 read capacity units. The other options do not provide enough throughput to meet the application's requirements.