A new startup is launching a mobile app backed by Amazon DynamoDB. They have no historical data to predict traffic patterns and expect sudden, unpredictable spikes in usage. Which DynamoDB capacity mode is the MOST cost-effective?

Answer options:

Provisioned capacity mode with Auto Scaling

On-Demand capacity mode

Provisioned capacity mode with a high fixed capacity

Reserved capacity

How to approach this question

Match 'unpredictable spikes' to the capacity mode.

Full Answer

B.On-Demand capacity mode✓ Correct

Amazon DynamoDB On-Demand is a flexible billing option capable of serving thousands of requests per second without capacity planning. It is ideal for unpredictable workloads.

Common mistakes

Choosing Provisioned with Auto Scaling, which can be too slow for sudden, sharp spikes.

Question 56 All questions Question 58

Practice the full AWS SAA-C03 Practice Exam 2

65 questions · hints · full answers · grading

More questions from this exam

Q01A company wants to ensure that no AWS resources can be created in the ap-northeast-1 region acros...Easy Q02A web application runs on Amazon EC2 instances behind an Application Load Balancer (ALB). The com...Easy Q03A company is storing highly sensitive data in an Amazon S3 bucket. The security team requires tha...Medium Q04An application running on an EC2 instance needs to access an Amazon DynamoDB table in a different...Hard Q05A company needs to store database credentials securely. The credentials must be automatically rot...Medium

View all 65 questions →