SAP-C02 Question #436: Real Exam Question with Answer & Explanation

Question

A company is running a critical stateful web application on two Linux Amazon EC2 instances behind an Application Load Balancer (ALB) with an Amazon RDS for MySQL database. The company hosts the DNS records for the application in Amazon Route 53. A solutions architect must recommend a solution to improve the resiliency of the application. The solution must meet the following objectives: - Application tier: RPO of 2 minutes. RTO of 30 minutes - Database tier: RPO of 5 minutes. RTO of 30 minutes The company does not want to make significant changes to the existing application architecture. The company must ensure optimal latency after a failover. Which solution will meet these requirements?

Options

• AConfigure the EC2 instances to use AWS Elastic Disaster Recovery. Create a cross-Region read
• BConfigure the EC2 instances to use Amazon Data Lifecycle Manager (Amazon DLM) to take
• CCreate a backup plan in AWS Backup for the EC2 instances and RDS DB instance. Configure
• DConfigure the EC2 instances to use Amazon Data Lifecycle Manager (Amazon DLM) to take

Explanation

RDS Cross-region replication has the best RPO and RTO: https://aws.amazon.com/blogs/database/implementing-a-disaster-recovery-strategy-with-amazon- https://docs.aws.amazon.com/prescriptive-guidance/latest/strategy-database-disaster- recovery/choosing-database.html AWS Elastic Disaster Recovery also provide the best RTO/RPO (with Warm standby and active- https://docs.aws.amazon.com/wellarchitected/latest/reliability- pillar/rel_planning_for_recovery_disaster_recovery.html

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