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A developer is using an AWS CodePipeline pipeline to provide continuous integration and continuous delivery (CI/CD) support for a Java application. The developer needs to update the pipeline to support the introduction of a new application dependency .jar file. The pipeline must start a build when a new version of the .jar file becomes available. Which solution will meet these requirements?
Answer: D
A company with multiple branch locations has an analytics and reporting application. Each branch office pushes a sales report to a shared Amazon S3 bucket at a predefined time each day. The company has developed an AWS Lambda function that analyzes the reports from all branch offices in a single pass. The Lambda function stores the results in a database. The company needs to start the analysis once each day at a specific time. Which solution will meet these requirements MOST cost-effectively?
Answer: D
A - This does not meet the criteria. it will trigger with every report upload which is multiple invocations. the requirement is a single invocation that analyses all reports at a predefined time. these invocations will be firing off all over the place as every report comes in. B - Step functions is over the top for this use case. C - lambda to run continuously... D - This is a single invocation that triggers the lambda function at a predefined time using CRON. Eventbridge was developed for this use case.
Source: Adapted from community discussion — DeaconStJohn
A developer has an application that asynchronously invokes an AWS Lambda function. The developer wants to store messages that resulted in failed invocations of the Lambda function so that the application can retry the call later. What should the developer do to accomplish this goal with the LEAST operational overhead?
Answer: C
A company is using AWS CloudFormation templates to deploy AWS resources. The company needs to update one of its AWS CloudFormation stacks. What can the company do to find out how the changes will impact the resources that are running?
Answer: A
A company stores all personally identifiable information (PII) in an Amazon DynamoDB table named PII in Account A. Developers are working on an application that is running on Amazon EC2 instances in Account B. The application in Account B requires access to the PII table. An administrator in Account A creates an IAM role named AccessPII that has permission to access the PII table. The administrator also creates a trust policy that specifies Account B as a principal that can assume the role. Which combination of steps should the developers take in Account B to allow their application to access the PII table? (Choose two.)
Answer: AD
AssumeRole -- Returns a set of temporary security credentials that you can use to access AWS resources. -- These temporary credentials consist of an access key ID, a secret access key, and a security token. -- Typically, you use AssumeRole within your account or for cross-account access. https://docs.aws.amazon.com/STS/latest/APIReference/API_AssumeRole.html
Source: Adapted from community discussion — trungtd
A developer is creating a template that uses AWS CloudFormation to deploy an application. The application is serverless and uses Amazon API Gateway, Amazon DynamoDB, and AWS Lambda. Which AWS service or tool should the developer use to define serverless resources in YAML?
Answer: C
The recommended AWS service for defining serverless resources in YAML is the AWS Serverless Application Model (AWS SAM). AWS SAM is an open-source framework that extends AWS CloudFormation to provide a simplified way to define the Amazon API Gateway APIs, AWS Lambda functions, and Amazon DynamoDB tables needed by your serverless application. You can define your serverless resources in a YAML template and then use the AWS SAM CLI to package and deploy your application. AWS CloudFormation serverless intrinsic functions can also be used to define serverless resources in YAML, but they have some limitations compared to AWS SAM. AWS Elastic Beanstalk is a platform as a service (PaaS) that is not serverless specific, while the AWS Cloud Development Kit (AWS CDK) is an alternative to YAML-based templates that uses familiar programming languages like TypeScript, Python, and Java to define AWS infrastructure.
Source: Adapted from community discussion — Bibay
A gaming website gives users the ability to trade game items with each other on the platform. The platform requires both users' records to be updated and persisted in one transaction. If any update fails, the transaction must roll back. Which AWS solutions can provide the transactional capability that is required for this feature? (Choose two.)
Answer: CD
A developer is deploying an application in the AWS Cloud by using AWS CloudFormation. The application will connect to an existing Amazon RDS database. The hostname of the RDS database is stored in AWS Systems Manager Parameter Store as a plaintext value. The developer needs to incorporate the database hostname into the CloudFormation template to initialize the application when the stack is created. How should the developer reference the parameter that contains the database hostname?
Answer: A
As it is the DB hostname and not sensitive credentials I think ssm dynamic is the correct answer. Option D - is for secure string whereas this parameter is currently stored in plain text. For option C, I opted against this because for an import value, I believe there needs to be an export value from another template. The question didn't state that anything else was created via CF template. Option B - I understand to be used to reference another resource block that is in the same YAML template.
Source: Adapted from community discussion — DeaconStJohn
A company uses an AWS Lambda function to call a third-party service. The third-party service has a limit of requests each minute. If the number of requests exceeds the limit, the third-party service returns rate-limiting errors. A developer needs to configure the Lambda function to avoid receiving rate limiting errors from the third-party service. Which solution will meet these requirements?
Answer: A
Correct answer is A. This will limit the lambda function to a defined concurrency which can be set to match the third party vendor limits. B - will lower the cpu of the function, not limit the invocations. C - Provisioned concurrency is a minimum value to keep lambda function execution environments on warm standby for critical workloads. D - Issue isn't with timeouts or lack of processing power
Source: Adapted from community discussion — DeaconStJohn
A developer is building a new containerized application by using AWS Copilot. The developer uses the AWS Copilot command line interface (CLI) to deploy the application during development. The developer committed the application code to a new AWS CodeCommit repository. The developer must create an automated deployment process before releasing the new application to production. What should the developer do to meet these requirements in the MOST operationally efficient way?
Answer: C
https://ecsworkshop.com/microservices/frontend/#deploy-frontend-0:~:text=on%20the%20pipeline.-,Creating%20the%20pipeline,-Generally%2C%20when%20we This workshop is linked from AWS docs @ https://docs.aws.amazon.com/AmazonECS/latest/developerguide/getting-started-aws-copilot-cli.html#:~:text=Step%206.%20Learn%20to%20create%20a%20CI/CD%20Pipeline Co-pilot CLI is a substitute for AWS console. As the question states the dev is using co-pilot I think this is the best answer, although option A is more suited to my experience.
Source: Adapted from community discussion — DeaconStJohn
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DVA-C02 practice, question 261. 548 questions available.
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