DVA-C01 (Page 23)

A developer needs to build an AWS CloudFormation template that self-populates the AWS Region variable that deploys the CloudFormation template.What is the MOST operationally efficient way to determine the Region in which the template is being deployed?Read More →

A developer registered an AWS Lambda function as a target for an Application Load Balancer (ALB) using a CLI command.However, the Lambda function is not being invoked when the client sends requests through the ALB.Why is the Lambda function not being invoked?Read More →

A company hosts a web application that writes to an Amazon DynamoDB table.Application users frequently observe and report errors.The development team examines Amazon CloudWatch logs and frequently sees the following error:400 Bad Request ProvisionedThroughputExceededExceptionWhat is the cause of this error?Read More →

A company’s developer is building a static website to be deployed in Amazon S3 for a production environment.The website integrates with an Amazon Aurora PostgreSQL database by using an AWS Lambda function.The website that is deployed to production will use a Lambda alias that points to a specific version of the Lambda function.The company must rotate the database credentials every 2 weeks.Lambda functions that the company deployed previously must be able to use the most recent credentials.Which solution will meet these requirements?Read More →

An application reads data from an Amazon DynamoDB table.Several times a day, for a period of 15 seconds, me application receives multiple ProvisionedThroughputExceeded errors.How should this exception be handled?Read More →

A company wants to migrate its web application to AWS and leverage auto scaling to handle peak workloads.The solutions architect determined that the best metric for an auto scaling event is the number of concurrent users.Based on this information, what should the developer use to auto scale based on concurrent users?Read More →

A company is managing a NoSQL database on-premises to host a critical component of an application, which is starting to have scaling issues.The company wants to migrate the application to Amazon DynamoDB with the following considerations:• Optimize frequent queries• Reduce read latencies• Plan for frequent queries on certain key attributes of the tableWhich solution would help achieve these objectives?Read More →

A developer is storing sensitive data generated by an application in Amazon S3.The developer wants to encrypt the data at rest A company policy requires an audit trail of when the AWS Key Management Service (AWS KMS) key was used and by whom.Which encryption option will meet these requirements?Read More →

A company’s website runs on an Amazon EC2 instance and uses Auto Scaling to scale the environment during peak times.Website users across the world are experiencing high latency due to static content on the EC2 instance, even during non-peak hours.Which combination of steps will resolve the latency issue? (Choose two.)Read More →

An application is experiencing performance issues based on increased demand.This increased demand is on read-only historical records pulled from an Amazon RDS-hosted database with custom views and queries.A developer must improve performance without changing the database structure.Which approach will improve performance and MINIMIZE management overhead?Read More →