AWS Certified Cloud Practitioner (CLF-C02) — Question 545

When designing AWS workloads to be operational even when there are component failures, what is an AWS best practice?

Answer options

• A. Perform quarterly disaster recovery tests.
• B. Place the main component on the us-east-1 Region.
• C. Design for automatic failover to healthy resources.
• D. Design workloads to fit on a single Amazon EC2 instance.

Correct answer: C

Explanation

Designing for automatic failover ensures that if a component fails, traffic or workloads are dynamically redirected to healthy resources with minimal to no downtime. Relying on a single Amazon EC2 instance or a single AWS Region (like us-east-1) creates a single point of failure, which goes against high availability principles. While disaster recovery testing is important, automated failover is the primary mechanism for maintaining continuous operations during component failures.