SAP-C02 Design for New Solutions Practice Question
A company is designing a disaster recovery solution for an Amazon Aurora MySQL database. The database is currently in a single AWS Region. The company needs an RPO of less than 1 minute and an RTO of less than 5 minutes. Which TWO steps should the company take? (Choose TWO.)
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Configure an Aurora Global Database with a secondary cluster in another Region.
Options A and C are correct. A: An Aurora Global Database with a secondary cluster in another Region provides replication with sub-minute RPO. C: Amazon RDS Proxy helps reduce failover time by managing database connections and routing traffic to the new primary during a failover, thus improving RTO. Option B is incorrect because cross-Region read replicas in Aurora typically have higher replication lag, which does not meet the sub-minute RPO requirement; Aurora Global Database is the appropriate approach. Option D is incorrect because Aurora Serverless auto scaling does not address cross-Region disaster recovery. Option E is incorrect because Multi-AZ provides high availability within a single Region, but does not meet the cross-Region DR requirement with sub-minute RPO and sub-5-minute RTO.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Configure an Aurora Global Database with a secondary cluster in another Region.
Why this is correct
Global Database provides cross-Region replication with low RPO.
- ✗
Create a read replica in another Region.
Why it's wrong here
Aurora read replicas can be cross-Region but promotion time may exceed 5 min RTO.
- ✓
Use Amazon RDS Proxy to reduce failover time.
Why this is correct
RDS Proxy helps applications reconnect quickly after failover, reducing RTO.
- ✗
Enable Aurora Serverless auto scaling.
Why it's wrong here
Auto scaling does not provide DR.
- ✗
Enable Multi-AZ for the Aurora cluster.
Why it's wrong here
Multi-AZ provides high availability within a Region, not cross-Region DR.
Quick reference
Cloud Service Model Comparison
| Model | You Manage | Provider Manages | Examples |
|---|---|---|---|
| IaaS | OS, runtime, apps, data | Hardware, hypervisor, networking | EC2, Azure VMs, GCP Compute Engine |
| PaaS | Apps and data | OS, runtime, middleware, hardware | Elastic Beanstalk, Azure App Service |
| SaaS | Data and settings only | Everything else | Microsoft 365, Salesforce, Workday |
| FaaS / Serverless | Function code only | Infra, scaling, runtime | Lambda, Azure Functions, Cloud Run |
| CaaS | Containers and apps | Kubernetes, OS, hardware | EKS, AKS, GKE |
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