Quiz: Module 17: The AWS Well-Architected Framework

A solutions architect is reviewing a production web application. The application runs on a single large EC2 instance with no Auto Scaling, uses a Single-AZ RDS database, has no CloudWatch alarms configured, and stores secrets as environment variables in the Lambda function configuration. Which TWO pillars have the most critical gaps in this architecture? (Select TWO.)Select multiple

A startup has a limited budget and must choose between two architectural improvements: (1) enabling RDS Multi-AZ for automatic database failover ($200/month additional cost), or (2) adding CloudFront for faster content delivery ($150/month additional cost). The application is a customer-facing e-commerce platform where database downtime directly causes lost revenue. Which improvement should the startup prioritize, and which pillar does this decision primarily address?

Which AWS service provides a structured, question-based review of your workload against the Well-Architected Framework pillars and generates a report of high-risk and medium-risk issues?

A team is reviewing their architecture and identifies a trade-off: enabling encryption on all DynamoDB tables (Security Pillar) adds a small amount of latency to every read and write operation (Performance Efficiency Pillar). The tables store customer personal data. How should the team resolve this trade-off?

A company runs a SaaS application on AWS. The architecture team wants to evaluate the application against both the general Well-Architected Framework and the specific best practices for multi-tenant SaaS applications. How should the team configure their Well-Architected review?

A solutions architect is designing an improvement plan after a Well-Architected review. The review identified the following issues: - HRI: No automated backups for the RDS database (Reliability) - HRI: Root account has no MFA enabled (Security) - MRI: CloudWatch Logs have no retention policy (Cost Optimization) - MRI: EC2 instances use gp2 volumes instead of gp3 (Cost Optimization) - MRI: No structured logging in Lambda functions (Operational Excellence) Which issue should the architect address first, and why?

A company conducts a Well-Architected review and discovers that their architecture scores well on Security and Reliability but poorly on Cost Optimization and Sustainability. The architecture uses over-provisioned EC2 instances (m5.4xlarge running at 10% CPU), stores all S3 data in Standard storage class regardless of access patterns, and runs development environments 24/7. Which single change would improve both the Cost Optimization and Sustainability pillars simultaneously?