Reference Architectures & Migration

Route 53 → ALB (public subnet) → EC2 ASG (private subnet) → RDS Multi-AZ + ElastiCache (data subnet). ELB sticky sessions or ElastiCache for session data. ElastiCache for DB cachin

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Practice questions

Generated from this module’s study material.

1. Which of the following statements is accurate based on the Reference Architectures & Migration study material?

IAM Policy Structure:Kinesis Data Streams: Ordering is guaranteed within a shard (same Partition ID \= same shard).File storage for users → Cognito Identity Pools → S3 (with IAM policy)Weighted — split traffic by percentage (weights don't need to sum to 100). A/B testing.

2. Which of the following statements is accurate based on the Reference Architectures & Migration study material?

Real-time event processing → Kinesis Data Streams → Lambda/FlinkRPO (Recovery Point Objective) — how much data loss is acceptable. "We can lose up to 1 hour of data."Endpoint types: Edge-optimized (default, routed through CloudFront PoPs), Regional (same-region clients), Private (VPC only via ENI).KMS Multi-Region Keys — same key ID/material in multiple regions. Encrypt in one region, decrypt in another without re-encryption. Use for Global DynamoDB tables, Global Aurora, global client-side encryption.

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