AWS Certified Cloud Practitioner (CLF-C02) — Question 441

Which feature of Amazon RDS provides the ability to automatically create a primary database instance and to synchronously replicate data to an instance in another Availability Zone?

Answer options

• A. Read replicas
• B. Blue/green deployment
• C. Multi-AZ deployment
• D. Reserved Instances

Correct answer: C

Explanation

Amazon RDS Multi-AZ deployments provide high availability and automatic failover by synchronously replicating data from the primary DB instance to a standby instance in another Availability Zone. Read Replicas use asynchronous replication for scaling read traffic, while Blue/Green Deployments facilitate safe database updates and Reserved Instances are a pricing discount option.