DVA-C01 (Page 19)

The developer is creating a web application that collects highly regulated and confidential user data through a POST request.The web application is served through Amazon CloudFront.User names and phone numbers must be encrypted at the edge and must remain encrypted throughout the entire application stack.What is the MOST secure way to meet these requirements?Read More →

An application uploads photos to an Amazon S3 bucket.Each photo that is uploaded to the S3 bucket must be resized to a thumbnail image by the application.Each thumbnail image is uploaded with a new name in the same S3 bucket.Which AWS service can a developer configure to directly process each single S3 event for each S3 object upload?Read More →

A company is running a Docker application on Amazon ECS.The application must scale based on user load in the last 15 seconds.How should a Developer instrument the code so that the requirement can be met?Read More →

Where should the appspec.yml file be placed in order for AWS CodeDeploy to work?Read More →

An application uses Amazon Kinesis Data Streams to ingest and process large streams of data records in real time.Amazon EC2 instances consume and process the data from the shards of the Kinesis data stream by using Amazon Kinesis Client Library (KCL).The application handles the failure scenarios and does not require standby workers.The application reports that a specific shard is receiving more data than expected.To adapt to the changes in the rate of data flow, the`hot` shard is resharded.Assuming that the initial number of shards in the Kinesis data stream is 4, and after resharding the number of shards increased to 6, what is the maximum number of EC2 instances that can be deployed to process data from all the shards?Read More →

A Company runs continuous integration/continuous delivery (CI/CD) pipelines for its application on AWS CodePipeline.A Developer must write unit tests and run them as part of the pipelines before staging the artifacts for testing.How should the Developer incorporate unit tests as part of CI/CD pipelines?Read More →

A Development team is working on a case management solution that allows medical claims to be processed and reviewed.Users log in to provide information related to their medical and financial situations.As part of the application, sensitive documents such as medical records, medical imaging, bank statements, and receipts are uploaded to Amazon S3.All documents must be securely transmitted and stored.All access to the documents must be recorded for auditing.What is the MOST secure approach?Read More →

An application needs to use the IP address of the client in its processing.The application has been moved into AWS and has been placed behind an ApplicationLoad Balancer (ALB).However, all the client IP addresses now appear to be the same.The application must maintain the ability to scale horizontally.Based on this scenario, what is the MOST cost-effective solution to this problem?Read More →

A company is building a compute-intensive application that will run on a fleet of Amazon EC2 instances.The application uses attached Amazon EBS disks for storing data.The application will process sensitive information and all the data must be encrypted.What should a Developer do to ensure the data is encrypted on disk without impacting performance?Read More →

What does an Amazon SQS delay queue accomplish?Read More →