AWS Certified Database – Specialty — Question 175

A user has a non-relational key-value database. The user is looking for a fully managed AWS service that will offload the administrative burdens of operating and scaling distributed databases. The solution must be cost-effective and able to handle unpredictable application traffic.
What should a Database Specialist recommend for this user?

Answer options

• A. Create an Amazon DynamoDB table with provisioned capacity mode
• B. Create an Amazon DocumentDB cluster
• C. Create an Amazon DynamoDB table with on-demand capacity mode
• D. Create an Amazon Aurora Serverless DB cluster

Correct answer: C

Explanation

The correct answer is C because Amazon DynamoDB with on-demand capacity mode automatically adjusts to the application's traffic patterns, making it ideal for unpredictable workloads. Option A, with provisioned capacity, requires manual adjustments for traffic changes, which does not meet the user's needs for cost-effectiveness and scalability. Options B and D involve different database types that do not align with the user's requirement for a key-value store.