Quiz: AWS Well-Architected Solutions

# 🏛️ Quiz: AWS Well-Architected Solutions > **Study Note:** This section covers how to apply AWS services to real-world scenarios following the 6 pillars of the Well-Architected Framework. --- ### 1. Improving Reliability **Question:** A startup hosts a critical application on a single EC2 instance in one Availability Zone. After an outage, they want to improve their architecture. What should they do? * [ ] Increase the instance’s firewall protection (Security). * [ ] Scale up the instance to handle more traffic (Performance Efficiency). * [**X**] **Deploy instances across multiple Availability Zones for fault tolerance (Reliability).** (Answer) * [ ] Reduce resource usage to avoid overprovisioning (Cost Optimization). > **💡 Explanation:** The Reliability pillar emphasizes fault tolerance. By using a Multi-AZ deployment, you ensure that if one data center fails, your application stays online in another zone. --- ### 2. Full-Stack Development (Amplify) **Question:** A developer wants to quickly add features like authentication and storage to a full-stack application with minimal infrastructure management. Which service is **BEST**? * [ ] AWS Well-Architected Tool * [**X**] **AWS Amplify** (Answer) * [ ] AWS CodePipeline * [ ] AWS AppSync > **💡 Explanation:** AWS Amplify is a complete solution that lets frontend web and mobile developers easily build, connect, and host full-stack applications on AWS. --- ### 3. Rightsizing for Cost Optimization **Question:** A company uses a large EC2 instance for a low-traffic website, and CPU usage rarely exceeds 10%. What is the best next step? * [ ] Decrease the number of instances to save money. * [ ] Automate the scaling of EC2 instances based on traffic. * [**X**] **Rightsize the EC2 instance to a smaller type to match the actual workload.** (Answer) * [ ] Upgrade the EC2 instance for better data protection. > **💡 Explanation:** "Rightsizing" is the process of matching instance types and sizes to your actual workload requirements to minimize costs while maintaining performance. --- ### 4. Automated Marketing Emails (SES) **Question:** A company wants to automate and optimize marketing emails to enhance customer engagement. Which service should they use? * [ ] AWS Amplify * [ ] Amazon Connect * [**X**] **Amazon Simple Email Service (Amazon SES)** (Answer) * [ ] Amazon AppStream 2.0 > **💡 Explanation:** Amazon SES is a cost-effective, flexible, and scalable email service that enables developers to send mail from within any application (marketing, notification, or transactional). --- ### 5. Monitoring Industrial Equipment (IoT) **Question:** A manufacturing company needs a way to monitor its assembly-line equipment for performance issues. Which service helps build this solution? * [ ] AWS Well-Architected Tool * [**X**] **AWS IoT Core** (Answer) * [ ] Amazon AppStream 2.0 * [ ] Amazon Connect > **💡 Explanation:** AWS IoT Core lets you connect billions of IoT devices (like factory sensors) and route trillions of messages to AWS services without managing infrastructure. --- ### 6. Virtual Desktops for Remote Work **Question:** A startup needs to provide its remote workforce with secure access to a work environment that functions like a physical office computer. Which service is **BEST**? * [ ] Amazon AppStream 2.0 * [**X**] **Amazon WorkSpaces** (Answer) * [ ] Amazon Connect * [ ] AWS AppSync > **💡 Explanation:** Amazon WorkSpaces is a managed, secure Desktop-as-a-Service (DaaS) solution that helps users access the data, applications, and resources they need from any supported device.