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Amazon DVA-C02 Exam Syllabus Topics:

Section	Weight	Objectives
Troubleshooting and Optimization	18%	- Debug and resolve errors 1. Resolve integration and configuration problems 2. Identify and fix code defects - Optimize application performance 1. Improve latency and throughput 2. Optimize resource usage and costs - Troubleshoot application issues 1. Use Amazon CloudWatch, AWS X-Ray for monitoring 2. Analyze logs, metrics, and traces
Security	26%	- Apply security best practices 1. Follow AWS Well-Architected Framework security principles 2. Validate application security configurations - Implement authentication and authorization 1. Manage IAM roles, policies, and permissions 2. Use Amazon Cognito for identity management - Secure application data 1. Manage secrets and credentials securely 2. Implement encryption at rest and in transit
Development with AWS Services	32%	- Interact with AWS data services 1. Implement caching and data storage strategies 2. Work with Amazon DynamoDB, Amazon S3 - Write code for applications hosted on AWS 1. Implement architectural patterns 2. Use AWS SDKs and APIs 3. Develop serverless applications - Integrate AWS services into applications 1. Use AWS Lambda, API Gateway, Amazon EventBridge 2. Implement messaging and event-driven workflows
Deployment	24%	- Deploy applications on AWS 1. Perform safe updates and rollbacks 2. Deploy to AWS Lambda, Amazon EC2, Elastic Beanstalk - Implement CI/CD pipelines 1. Use AWS CodePipeline, CodeBuild, CodeDeploy 2. Automate deployment and testing workflows - Prepare application artifacts for deployment 1. Use infrastructure as code (AWS CloudFormation, AWS SAM) 2. Package code and dependencies

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Amazon AWS Certified Developer - Associate Sample Questions (Q433-Q438):

NEW QUESTION # 433
A company wants to use AWS CodeDeploy to deploy several AWS Lambda functions to a pipeline in AWS CodePipeline. The company needs to add unit tests to the pipeline for the Lambda function code. The unit tests must pass before deployment. Which solution will meet these requirements?

A. Add the unit tests to the CodeDeploy BeforeAllowTraffic hook. Configure the pipeline to stop running if the tests fail.
B. Add the unit tests to the CodeDeploy BeforeInstall hook. Configure the pipeline to stop running if the tests fail.
C. Add the unit tests to the reports section of AWS CodeBuild. Configure the pipeline to stop running if the tests fail.
D. Add the unit tests to run in an AWS CodeBuild project as a test stage in the CodePipeline pipeline. Configure the pipeline to stop running if the tests fail.

Answer: D

Explanation:
Adding the unit tests in an AWS CodeBuild project as a separate test stage within the CodePipeline allows the tests to run before the deployment stage. If the tests fail, the pipeline automatically stops, preventing deployment. This approach aligns with best practices for continuous integration and deployment pipelines by separating build, test, and deploy phases explicitly.

NEW QUESTION # 434
A company hosts an application that uploads data to an Amazon S3 bucket named amzn-s3- demo-bucket. The bucket is in a single AWS account named 111111111111. The company deploys an AWS Lambda function named S3EventParser in a second AWS account named
222222222222.
The company wants to configure S3 Event Notifications to initiate the Lambda function each time a new object is uploaded to the S3 bucket. The company has deployed all resources in the eu- west-1 Region.
A developer who has access to both AWS accounts needs to ensure that S3 Event Notifications can successfully deliver upload events to the Lambda function.
Which solution will meet these requirements?

A. Add the following statement to the Lambda function IAM role's inline policy in the 222222222222 account:
B. Add the following statement to the Lambda function IAM role's trust policy in the 222222222222 account:
C. Add the following statement to the S3 bucket policy in the 111111111111 account:
D. Add the following statement to the resource-based policy for the Lambda function in the
222222222222 account:

Answer: D

Explanation:
For Amazon S3 to invoke a Lambda function (including across accounts), the Lambda function must grant Amazon S3 permission by using a resource-based policy on the function. The policy must allow the s3.amazonaws.com service principal to call lambda:InvokeFunction on the function ARN, and it should restrict access by specifying the source bucket ARN and the source AWS account in the condition keys. This enables S3 Event Notifications from the bucket in the first account to successfully invoke the Lambda function in the second account.

NEW QUESTION # 435
A company has an online web application that includes a product catalog. The catalog is stored in an Amazon S3 bucket that is named DOC-EXAMPLE-BUCKET. The application must be able to list the objects in the S3 bucket and must be able to download objects through an 1AM policy.
Which policy allows MINIMUM access to meet these requirements?

A. Option A
B. Option D
C. Option B
D. Option C

Answer: A

NEW QUESTION # 436
A company has a web application that runs on Amazon EC2 instances with a custom Amazon Machine Image (AMI) The company uses AWS CloudFormation to provision the application The application runs in the us- east-1 Region, and the company needs to deploy the application to the us-west-1 Region An attempt to create the AWS CloudFormation stack in us-west-1 fails. An error message states that the AMI ID does not exist. A developer must resolve this error with a solution that uses the least amount of operational overhead Which solution meets these requirements?

A. Manually deploy the application outside AWS CloudFormation in us-west-1.
B. Copy the custom AMI from us-east-1 to us-west-1. Update the AWS CloudFormation template for us- west-1 to refer to AMI ID for the copied AMI Relaunch the stack
C. Build the custom AMI in us-west-1 Create a new AWS CloudFormation template to launch the stack in us-west-1 with the new AMI ID
D. Change the AWS CloudFormation templates for us-east-1 and us-west-1 to use an AWS AMI.
Relaunch the stack for both Regions.

Answer: B

Explanation:
* Problem: CloudFormation can't find the custom AMI in the target region (us-west-1) because AMIs are region-specific.
* Copying AMIs:
* AMIs can be copied across regions, maintaining their configuration.
* This approach minimizes operational overhead as the existing CloudFormation template can be reused with a minor update.
* Updating the Template:
* Modify the CloudFormation template in us-west-1 to reference the newly copied AMI's ID in that region.
References:
* Copying AMIs: https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/CopyingAMIs.html
* CloudFormation Templates and AMIs: [invalid URL removed]

NEW QUESTION # 437
A company built an online event platform. For each event, the company organizes quizzes and generates leaderboards that are based on the quiz scores. The company stores the leaderboard data in Amazon DynamoDB and retains the data for 30 days after an event is complete. The company then uses a scheduled job to delete the old leaderboard data.
The DynamoDB table is configured with a fixed write capacity. During the months when many events occur, the DynamoDB write API requests are throttled when the scheduled delete job runs.
A developer must create a long-term solution that deletes the old leaderboard data and optimizes write throughput.
Which solution meets these requirements?

A. Use DynamoDB Streams to schedule and delete the leaderboard data.
B. Use AWS Step Functions to schedule and delete the leaderboard data.
C. Configure a TTL attribute for the leaderboard data.
D. Set a higher write capacity when the scheduled delete job runs.

Answer: C

NEW QUESTION # 438
......

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