A company has a serverless application that uses Amazon API Gateway and AWS Lambda functions to expose a RESTful API. The company uses a continuous integration and continuous delivery (CI/CD) workflow to deploy the application to multiple environments. The company wants to implement automated integration tests after deployment. A developer needs to set up the necessary infrastructure and processes to automate the deployment and integration tests for the serverless application.
A. Configure API Gateway stages to represent each application environment. Use AWS
SAM templates to manage the infrastructure for the Lambda functions and API resources.
Use AWS CodeBuild to implement automated deployment tests to validate the
deployments in each stage.
B. Configure API Gateway stages to represent each application environment. Use AWS CloudFormation to manage the infrastructure for the Lambda functions and API resources. Use AWS CodeBuild to implement automated deployment tests to validate the deployments in each stage.
C. Use AWS CodePipeline to create a CI/CD pipeline. Configure API Gateway stages to represent each application environment. Use AWS CloudFormation templates to manage the infrastructure for the Lambda functions and API resources. Use AWS CodeBuild to implement automated deployment tests to validate the deployments in each stage.
D. Use AWS CloudFormation to create and deploy the application infrastructure in each application environment. Use the AWS CLI to invoke Lambda functions to perform deployment tests after each deployment.
A developer is receiving an intermittent ProvisionedThroughputExceededException error from an application that is based on Amazon DynamoDB. According to the Amazon CloudWatch metrics for the table, the application is not exceeding the provisioned throughput. What could be the cause of the issue?
A. The DynamoDB table storage size is larger than the provisioned size.
B. The application is exceeding capacity on a particular hash key.
C. The DynamoDB table is exceeding the provisioned scaling operations.
D. The application is exceeding capacity on a particular sort key.
A company is developing a serverless application that requires storage of sensitive API keys as environment variables for various services. The application requires the automatic rotation of the encryption keys every year. Which solution will meet these requirements with no development effort?
A. Encrypt the environment variables by using AWS Secrets Manager. Set up automatic
rotation in Secrets Manager.
B. Encrypt the environment variables by using AWS Key Management Service (AWS KMS) customer managed keys. Enable automatic key rotation.
C. Encrypt the environment variables by using AWS Key Management Service (AWS KMS) AWS managed keys. Configure a custom AWS Lambda function to automate key rotation.
D. Encrypt the environment variables by using AWS Systems Manager Parameter Store. Set up automatic rotation in Parameter Store.
A developer is building an application that includes an AWS Lambda function that is written in .NET Core. The Lambda function's code needs to interact with Amazon DynamoDB tables and Amazon S3 buckets. The developer must minimize the Lambda function's deployment time and invocation duration. Which solution will meet these requirements?
A. Increase the Lambda function's memory.
B. Include the entire AWS SDK for .NET in the Lambda function's deployment package.
C. Include only the AWS SDK for .NET modules for DynamoDB and Amazon S3 in the Lambda function's deployment package.
D. Configure the Lambda function to download the AWS SDK for .NET from an S3 bucket at runtime.
In a move toward using microservices, a company's management team has asked all development teams to build their services so that API requests depend only on that service's data store. One team is building a Payments service which has its own database; the service needs data that originates in the Accounts database. Both are using Amazon DynamoDB. What approach will result in the simplest, decoupled, and reliable method to get near-real time updates from the Accounts database?
A. Use AWS Glue to perform frequent ETL updates from the Accounts database to the
Payments database.
B. Use Amazon ElastiCache in Payments, with the cache updated by triggers in the Accounts database.
C. Use Amazon Data Firehose to deliver all changes from the Accounts database to the Payments database.
D. Use Amazon DynamoDB Streams to deliver all changes from the Accounts database to the Payments database.
A developer received the following error message during an AWS CloudFormation deployment: Which action should the developer take to resolve this error?
A. Contact AWS Support to report an issue with the Auto Scaling Groups (ASG> service.
B. Add a DependsOn attribute to the ASGInstanceRole12345678 resource in the CloudFormation template. Then delete the stack.
C. Modify the CloudFormation template to retain the ASGInstanceRolet 2345678 resource. Then manually delete the resource after deployment.
D. Add a force parameter when calling CloudFormation with the role-am of ASGInstanceRole12345678.
A company hosts a client-side web application for one of its subsidiaries on Amazon S3. The web application can be accessed through Amazon CloudFront from https://www.example.com. After a successful rollout, the company wants to host three more client-side web applications for its remaining subsidiaries on three separate S3 buckets. To achieve this goal, a developer moves all the common JavaScript files and web fonts to a central S3 bucket that serves the web applications. However, during testing, the developer notices that the browser blocks the JavaScript files and web fonts. What should the developer do to prevent the browser from blocking the JavaScript files and web fonts?
A. Create four access points that allow access to the central S3 bucket. Assign an access point to each web application bucket.
B. Create a bucket policy that allows access to the central S3 bucket. Attach the bucket policy to the central S3 bucket.
C. Create a cross-origin resource sharing (CORS) configuration that allows access to the central S3 bucket. Add the CORS configuration to the central S3 bucket.
D. Create a Content-MD5 header that provides a message integrity check for the central S3 bucket. Insert the Content-MD5 header for each web application request.
A developer is building an application that uses Amazon DynamoDB. The developer wants to retrieve multiple specific items from the database with a single API call. Which DynamoDB API call will meet these requirements with the MINIMUM impact on the database?
A. BatchGetltem
B. Getltem
C. Scan
D. Query
A developer created an AWS Lambda function that accesses resources in a VPC. The Lambda function polls an Amazon Simple Queue Service (Amazon SOS) queue for new messages through a VPC endpoint. Then the function calculates a rolling average of the numeric values that are contained in the messages. After initial tests of the Lambda function, the developer found that the value of the rolling average that the function returned was not accurate. How can the developer ensure that the function calculates an accurate rolling average?
A. Set the function's reserved concurrency to 1. Calculate the rolling average in the function. Store the calculated rolling average in Amazon ElastiCache.
B. Modify the function to store the values in Amazon ElastiCache. When the function initializes, use the previous values from the cache to calculate the rolling average.
C. Set the function's provisioned concurrency to 1. Calculate the rolling average in the function. Store the calculated rolling average in Amazon ElastiCache.
D. Modify the function to store the values in the function's layers. When the function initializes, use the previously stored values to calculate the rolling average.
A developer accesses AWS CodeCommit over SSH. The SSH keys configured to access AWS CodeCommit are tied to a user with the following permissions: The developer needs to create/delete branches Which specific IAM permissions need to be added based on the principle of least privilege?
A. Option A
B. Option B
C. Option C
D. Option D