AWS SAA Mock Exam 6 - Disaster Recovery & Business Continuity

📝 Exam Information

  • Focus: Disaster Recovery, Backup, Business Continuity
  • Duration: 130 minutes
  • Questions: 65 questions

Question 1

Một công ty có RTO 2 giờ và RPO 30 phút cho critical database. Database có 2TB data với 20GB daily changes. Giải pháp DR nào cost-effective nhất?

A) RDS Multi-AZ với automated backups B) Cross-region read replica với manual failover
C) RDS snapshots mỗi 30 phút + cross-region copy D) DMS continuous replication to cross-region RDS

Answer: D Explanation: DMS continuous replication đáp ứng RPO 30 phút, cross-region ensures DR capability, cost-effective cho medium-sized databases.

Question 2

E-commerce platform cần maintain 99.95% availability trong disaster. Hiện tại single-region, cần expand sang multi-region. Architecture nào optimal?

A) Route 53 health checks + CloudFront + multi-region ALB B) Global Accelerator + multi-region deployment + DynamoDB Global Tables C) CloudFormation cross-region + RDS Cross-Region Backups
D) Direct Connect + VPN backup + S3 Cross-Region Replication

Answer: B Explanation: Global Accelerator provides automatic failover, DynamoDB Global Tables ensure data consistency across regions.

Question 3-15

[Additional DR questions covering:] - Backup strategies (automated, cross-region, lifecycle) - Recovery procedures (automated failover, manual processes) - Testing methodologies (chaos engineering, DR drills)

Study Focus: DR Patterns

  1. Pilot Light - Minimal infrastructure, scale up during disaster
  2. Warm Standby - Scaled-down version running continuously
  3. Multi-Site Active/Active - Full capacity in multiple locations
  4. Backup & Restore - Restore from backups to new infrastructure

Key RTO/RPO Combinations

  • RTO < 1 hour, RPO < 15 min: Multi-site active/active
  • RTO 2-4 hours, RPO 1 hour: Warm standby
  • RTO 8-24 hours, RPO 4 hours: Pilot light
  • RTO > 24 hours: Backup & restore