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title: 'Quiz: AWS Well-Architected Solutions '

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# 🏛️ 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.

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### 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.

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### 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.

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### 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.

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### 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).

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### 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.

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### 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.