Which pillar of the AWS Well-Architected Framework refers to the ability of a system to recover from infrastructure or service disruptions and dynamically acquire computing resources to meet demand?Read More →
A developer is designing a serverless application that customers use to select seats for a concert venue.Customers send the ticket requests to an Amazon API Gateway API with an AWS Lambda function that acknowledges the order and generates an order ID.The application includes two additional Lambda functions: one for inventory management and one for payment processing.These two Lambda functions run in parallel and write the order to an Amazon Dynamo DB table.The application must provide seats to customers according to the following requirements.If a seat is accidently sold more than once, the first order that the application received must get the seat.In these cases, the application must process the payment for only the first order.However, if the first order is rejected during payment processing, the second order must get the seat.In these cases, the application must process the payment for the second order.Which solution will meet these requirements?Read More →
You’re trying to delete an SSL certificate from the IAM certificate store, and you’re getting the message “Certificate: is being used by CloudFront.”Which of the following statements is probably the reason why you are getting this error?Read More →
A company runs its critical database on an Amazon RDS for PostgreSQL DB instance.The company wants to migrate to Amazon Aurora PostgreSQL with minimal downtime and data loss.Which solution will meet these requirements with the LEAST operational overhead?Read More →
A company has an application that has a web frontend.The application runs in the company’s on-premises data center and requires access to file storage for critical data.The application runs on three Linux VMs for redundancy.The architecture includes a load balancer with HTTP request-based routing.The company needs to migrate the application to AWS as quickly as possible.The architecture on AWS must be highly available.Which solution will meet these requirements with the FEWEST changes to the architecture?Read More →
A company is using an Amazon RDS database to run reports that are input/output (I/O) intensive.Which AWS service can be used to improve the database performance?Read More →
A company is working with an external vendor that requires write access to the company’s Amazon Simple Queue Service (Amazon SQS) queue.The vendor has its own AWS account.What should a solutions architect do to implement least privilege access?Read More →
A company wants a time-series database service that makes it easier to store and analyze trillions of events each day.Which AWS service will meet this requirement?Read More →
A company is expanding the compatibility of its photo-sharing mobile app to hundreds of additional devices with unique screen dimensions and resolutions.Photos are stored in Amazon S3 in their original format and resolution.The company uses an Amazon CloudFront distribution to serve the photos.The app includes the dimension and resolution of the display as GET parameters with every request.A developer needs to implement a solution that optimizes the photos that are served to each device to reduce load time and increase photo quality.Which solution will meet these requirements MOST cost-effectively?Read More →
A company stores sales transaction data in Amazon DynamoDB tables.To detect anomalous behaviors and respond quickly, all changes to the items stored in the DynamoDB tables must be logged within 30 minutes.Which solution meets the requirements?Read More →
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