Deployment and Provisioning

1. A company needs a managed relational database service that automatically handles patching, backups, and failover without requiring the team to manage the underlying infrastructure. Which AWS service best meets this requirement?

• A.Amazon RDS, which provides a managed relational database with automated backups, patching, and Multi-AZ failover.✓ Correct
• B.Amazon EC2 with a self-managed database engine installed directly on the virtual machine instance.
• C.Amazon DynamoDB, which is a fully managed NoSQL key-value and document database service.
• D.Amazon Redshift, which is a managed data warehouse optimized for analytical query workloads.

2. A startup wants to build a serverless REST API that scales automatically with zero server management and pays only for actual requests made. Which combination of AWS services best satisfies this business need?

• A.Amazon API Gateway combined with AWS Lambda to create a fully serverless, event-driven API backend.✓ Correct
• B.Amazon EC2 Auto Scaling Group behind an Application Load Balancer running a Node.js Express server.
• C.AWS Elastic Beanstalk deploying a containerized API application with automatic environment management.
• D.Amazon ECS on EC2 launch type with an Application Load Balancer routing traffic to containers.

3. An application currently runs on a single EC2 instance in one Availability Zone. The architecture team wants to achieve high availability. Which design change is most effective?

• A.Deploy EC2 instances across multiple Availability Zones behind an Elastic Load Balancer with an Auto Scaling group.✓ Correct
• B.Upgrade the single EC2 instance to a larger instance type to handle more traffic and reduce failure impact.
• C.Enable detailed CloudWatch monitoring on the single instance to detect failures faster and alert the team.
• D.Create an AMI snapshot of the instance daily so the environment can be manually restored after a failure.

4. A company is deploying a critical web application and requires that it remains available even if an entire AWS Availability Zone becomes unavailable. Which Auto Scaling configuration supports this requirement?

• A.Configure the Auto Scaling group to span at least two Availability Zones with a minimum of one healthy instance per zone.✓ Correct
• B.Set the Auto Scaling group's minimum capacity to zero and maximum to ten within a single Availability Zone.
• C.Enable EC2 instance termination protection on all instances to prevent Auto Scaling from removing them.
• D.Schedule an Auto Scaling action to launch additional instances every morning before peak business hours.

5. A high-performance database workload on EC2 requires the lowest possible latency block storage with consistent I/O performance for millions of IOPS. Which Amazon EBS volume type is most appropriate?

• A.Amazon EBS io2 Block Express, which delivers sub-millisecond latency and up to 256,000 IOPS per volume.✓ Correct
• B.Amazon EBS gp2, which provides a general-purpose SSD with burstable baseline performance using credits.
• C.Amazon EBS st1, which is a low-cost HDD volume optimized for large, sequential throughput workloads.
• D.Amazon EBS sc1, which is a cold HDD designed for infrequently accessed, large sequential data workloads.