AWS Multi-Region Resilience Architecture Quiz

1. How does S3 cross-region replication enhance resilience?

By compressing objects before storage

By automatically copying objects to another region

By encrypting all data in transit

By increasing storage capacity

2. How can you test multi-region failover without impacting production?

Perform failover during peak hours

Use Route 53 failover simulation and chaos engineering tools

Manually switch regions without testing

Wait for actual failure to test

3. Which approach minimizes data loss while maintaining acceptable latency in multi-region systems?

Pure synchronous replication

Pure asynchronous replication

Hybrid approach with quorum-based writes

No replication, single region only

4. What is the primary challenge of synchronous replication across regions?

Higher network latency impact on write performance

Increased storage costs

Data loss during replication

Inability to scale applications

5. How does AWS Backup support multi-region resilience?

By encrypting all backups

By enabling cross-region backup copies

By increasing backup frequency

By compressing backup data

6. Which AWS service helps automate failover for EC2 instances across regions?

Auto Scaling

AWS Systems Manager

Route 53 with health checks and failover routing

CloudWatch alarms

7. What does the pilot light disaster recovery strategy involve?

Complete duplicate infrastructure running continuously

Minimal standby resources ready for rapid activation

Regular backups with manual recovery

No standby infrastructure

8. How can you ensure database consistency across multiple regions?

Use read replicas only

Implement eventual consistency

Use synchronous replication with transactions

Disable replication

9. Which disaster recovery strategy requires the least downtime during failover?

Backup and restore

Pilot light

Warm standby

Multi-site active-active

10. What is a key benefit of using Route 53 weighted routing in multi-region deployments?

Reduces data transfer costs

Distributes traffic across regions by percentage

Encrypts DNS queries

Improves database performance

11. Which AWS service enables automatic failover between regions for RDS databases?

RDS Multi-AZ

RDS Multi-Region

RDS Read Replicas

RDS Aurora Global Database

12. What is the RTO measurement for a service?

Time to restore normal operations after failure

Time between data backups

Time to replicate data to another region

Time to launch a new instance

13. Which service provides active-active multi-region capability for applications?

Application Load Balancer

Route 53 with health checks

AWS Global Accelerator

VPC peering

14. How can you achieve zero data loss across regions?

Use asynchronous replication

Implement synchronous replication with acknowledgment

Schedule daily backups

Enable versioning on S3

15. What does RPO stand for in disaster recovery?

Recovery Process Objective

Recovery Point Objective

Replication Priority Order

Regional Performance Optimization

16. Which approach reduces latency for users in multiple geographic regions?

Centralizing all resources in one region

Deploying applications in regions near users

Using larger instance types

Increasing database connections

17. What is the primary use case for DynamoDB global tables in multi-region architecture?

Batch processing across regions

Multi-master replication with sub-second sync

Scheduled backups to multiple regions

Load balancing database queries

18. How does CloudFront improve multi-region resilience?

By caching content at edge locations globally

By managing database failover

By monitoring application health

By encrypting inter-region traffic

19. Which replication strategy provides the lowest RPO for critical data across regions?

Asynchronous replication

Synchronous replication

Scheduled backups

Event-driven replication

20. What is the primary advantage of using Route 53 health checks in a multi-region setup?