AWS Certified Developer – Associate (DVA-C02) — Question 98

An organization is storing large files in Amazon S3, and is writing a web application to display meta-data about the files to end-users. Based on the metadata a user selects an object to download. The organization needs a mechanism to index the files and provide single-digit millisecond latency retrieval for the metadata.

What AWS service should be used to accomplish this?

Answer options

• A. Amazon DynamoDB
• B. Amazon EC2
• C. AWS Lambda
• D. Amazon RDS

Correct answer: A

Explanation

Amazon DynamoDB is a NoSQL database service that provides low-latency data access, making it suitable for indexing and retrieving metadata quickly. Amazon EC2 and AWS Lambda are compute services that do not specialize in indexing and low-latency retrieval, while Amazon RDS is a relational database that may not achieve the required performance for this use case.