A SaaS company requires zero-downtime global deployments where both us-east-1 and eu-west-1 serve live write traffic simultaneously. If one region fails, the other must continue without data loss. Which architecture pattern is needed?
#2Design Resilient Architectures
A web application experiences unpredictable traffic spikes. The architecture must automatically add EC2 instances when CPU exceeds 70% and remove them when traffic subsides. Which combination should be used?
#3Design Resilient Architectures
A company hosts its primary website in us-east-1 and a disaster recovery copy in eu-west-1. If the primary becomes unhealthy, DNS should automatically resolve to the DR site. Which Route 53 routing policy should be used?
#4Design Resilient Architectures
A system must send each uploaded file notification to three independent processing services simultaneously. If one service is down, the others must still receive the message. Which architecture achieves this?
#5Design Resilient Architectures
A company needs to deploy application updates with zero downtime and the ability to instantly roll back if issues arise. The application runs on Elastic Beanstalk. Which deployment strategy should be used?
#6Design Resilient Architectures
A company wants a disaster recovery strategy that keeps core infrastructure running in a secondary region at minimal cost, allowing scale-up within minutes during a disaster. Which DR strategy fits?
#7Design Resilient Architectures
An application runs on multiple EC2 instances behind an ALB. Some instances occasionally become unresponsive. How should the ALB handle this?
#8Design Resilient Architectures
A gaming company needs sub-millisecond read/write latency for player data across North America, Europe, and Asia with automatic multi-region conflict resolution. Which solution is best?
#9Design Resilient Architectures
An order processing system crashes when the downstream payment service is temporarily unavailable, causing lost orders. How should the architect decouple these components?
#10Design Resilient Architectures
A company needs to automate daily backups of its RDS databases, EBS volumes, and DynamoDB tables with a centralized backup policy. Which service should they use?
#11Design Resilient Architectures
An application has heavy read traffic causing high latency on its Aurora MySQL primary instance. How should the architect improve read performance while maintaining availability?
#12Design Resilient Architectures
A company needs its production RDS PostgreSQL database to automatically failover if the primary instance becomes unavailable. Which feature should be enabled?
#13Design Resilient Architectures
A company must replicate S3 objects to a different AWS region for disaster recovery. The replica must stay in sync continuously. Which S3 feature achieves this?
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