A company runs a production PostgreSQL database on Amazon RDS. The database size is 2 TB and it runs 24/7. The company expects to use this database for the next 3 years. What is the MOST cost-effective purchasing option?

Answer options:

On-Demand Instances

Partial Upfront Reserved Instances

All Upfront Reserved Instances

Compute Savings Plans

How to approach this question

Look for '24/7 workload', '3 years', and 'MOST cost-effective'. All Upfront RIs provide the deepest discount.

Full Answer

C.All Upfront Reserved Instances✓ Correct

For steady-state, predictable database workloads running 24/7 over a long period (1 or 3 years), Amazon RDS Reserved Instances provide significant discounts compared to On-Demand pricing. The 'All Upfront' payment option yields the highest discount.

Common mistakes

Selecting Compute Savings Plans, forgetting that they do not cover RDS instances.

Question 63 All questions Question 65

Practice the full AWS SAA-C03 Practice Exam 3

65 questions · hints · full answers · grading

More questions from this exam

Q01A company stores sensitive documents in an Amazon S3 bucket. The security team requires that only...Easy Q02A large enterprise uses AWS Organizations to manage multiple accounts. The security team wants to...Medium Q03A company hosts a web application on Amazon EC2 instances behind an Application Load Balancer (AL...Easy Q04A company wants to continuously monitor its AWS accounts for malicious activity and unauthorized ...Medium Q05A company needs to encrypt data at rest in Amazon RDS and manage database credentials securely. T...Medium

View all 65 questions →