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Amazon DVA-C02 Exam Syllabus Topics:

Section	Weight	Objectives
Topic 1: Development with AWS Services	32%	- Use data stores in application development 1. Amazon ElastiCache 2. Amazon DynamoDB 3. Amazon S3 4. Amazon EFS 5. Amazon RDS - Develop code for applications hosted on AWS 1. AWS CloudFormation 2. Amazon SQS 3. AWS Lambda 4. AWS CLI 5. Amazon DynamoDB 6. Amazon SNS 7. AWS SDKs 8. Amazon Cognito 9. Amazon API Gateway 10. Amazon S3 - Develop code for AWS serverless applications 1. Amazon EventBridge 2. AWS AppSync 3. Amazon API Gateway 4. AWS Step Functions
Topic 2: Security	26%	- Manage sensitive data in application code 1. AWS Secrets Manager 2. Environment variables 3. Encryption of data at rest and in transit 4. AWS Systems Manager Parameter Store - Implement encryption by using AWS services 1. AWS CloudHSM 2. AWS Secrets Manager 3. Amazon S3 encryption 4. AWS Certificate Manager 5. AWS KMS - Implement authentication and/or authorization for applications and AWS services 1. Role-based access control (RBAC) 2. Resource-based policies, service policies, and principal policies 3. Bearer tokens (JWT, OAuth, AWS STS) 4. User pools and identity pools in Amazon Cognito 5. Identity federation (SAML, OpenID Connect, Amazon Cognito)
Topic 3: Troubleshooting and Optimization	18%	- Optimize applications by using AWS services and features 1. Cost optimization 2. Memory and compute optimization 3. Data storage optimization 4. Caching strategies (ElastiCache, CloudFront) 5. Concurrency and throttling - Instrument code for observability 1. Structured logging 2. Amazon CloudWatch alarms 3. Amazon CloudWatch metrics 4. Custom metrics 5. AWS X-Ray - Assist in a root cause analysis 1. Application logging 2. Error handling and retries 3. AWS X-Ray 4. AWS CloudTrail 5. Amazon CloudWatch Logs
Topic 4: Deployment	24%	- Test applications in development environments 1. Mocking AWS services 2. AWS SAM local 3. Local testing of Lambda functions - Prepare application artifacts to be deployed to AWS 1. AWS CDK 2. Lambda deployment packages 3. AWS CloudFormation 4. AWS SAM 5. Docker containers - Deploy code by using AWS CI/CD services 1. Rolling deployments 2. AWS CodeCommit 3. Blue/green deployments 4. AWS CodeBuild 5. Canary deployments 6. GitHub integration 7. AWS CodePipeline 8. AWS CodeDeploy - Automate deployment testing 1. AWS CodeCommit 2. AWS CodeBuild 3. AWS CodePipeline 4. AWS CodeDeploy

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Amazon AWS Certified Developer - Associate Sample Questions (Q536-Q541):

NEW QUESTION # 536
A developer is writing a serverless application that requires an AWS Lambda function to be invoked every 10 minutes.
What is an automated and serverless way to invoke the function?

A. Create an Amazon EventBridge rule that runs on a regular schedule to invoke the Lambda function.
B. Deploy an Amazon EC2 instance based on Linux, and edit its /etc/confab file by adding a command to periodically invoke the lambda function
C. Create an Amazon Simple Notification Service (Amazon SNS) topic that has a subscription to the Lambda function with a 600-second timer.
D. Configure an environment variable named PERIOD for the Lambda function. Set the value to 600.

Answer: A

Explanation:
The solution that will meet the requirements is to create an Amazon EventBridge rule that runs on a regular schedule to invoke the Lambda function. This way, the developer can use an automated and serverless way to invoke the function every 10 minutes. The developer can also use a cron expression or a rate expression to specify the schedule for the rule. The other options either involve using an Amazon EC2 instance, which is not serverless, or using environment variables or query parameters, which do not trigger the function.

NEW QUESTION # 537
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 D
B. Option C
C. Option A
D. Option B

Answer: C

NEW QUESTION # 538
A developer is building an application that authenticates users by using an external OpenID Connect (OIDC) identity provider (IdP). The developer needs to provide users with access to objects in an Amazon S3 bucket. The developer has created an IAM role that has an attached policy to allow access to the S3 bucket.
The developer needs to grant users temporary credentials to assume the IAM role through the application.
Which solution will meet this requirement?

A. Create an Amazon Cognito user pool by using the OIDC IdP and the IAM role. Use the user pool to obtain temporary credentials.
B. Call the AWS STS AssumeRole API operation with an OIDC access token to obtain temporary credentials.
C. Call the AWS STS AssumeRoleWithSAML API operation with an OIDC access token to obtain temporary credentials.
D. Create an Amazon Cognito identity pool by using the OIDC IdP and the IAM role. Use the identity pool to obtain temporary credentials.

Answer: D

Explanation:
To integrate an OIDC identity provider and grant temporary AWS credentials to access resources like S3, the correct approach is to use an Amazon Cognito identity pool. It supports federated identities with OIDC IdPs and can be configured to allow users to assume an IAM role with permissions to access AWS services. This meets the requirement with minimal effort and proper integration.

NEW QUESTION # 539
A financial company must store original customer records for 10 years for legal reasons. A complete record contains personally identifiable information (PII). According to local regulations, PII is available to only certain people in the company and must not be shared with third parties. The company needs to make the records available to third-party organizations for statistical analysis without sharing the PII.
A developer wants to store the original immutable record in Amazon S3. Depending on who accesses the S3 document, the document should be returned as is or with all the PII removed. The developer has written an AWS Lambda function to remove the PII from the document. The function is named removePii.
What should the developer do so that the company can meet the PII requirements while maintaining only one copy of the document?

A. Set up an S3 event notification that invokes the removePii function when an S3 PUT request is made. Call Amazon S3 by using a PUT request to access the object without PII.
B. Create an S3 access point from the S3 console. Use the access point name to call the GetObjectLegalHold S3 API function. Pass in the removePii function name to access the object without PII.
C. Create an S3 Object Lambda access point from the S3 console. Select the removePii function. Use S3 Access Points to access the object without PII.
D. Set up an S3 event notification that invokes the removePii function when an S3 GET request is made. Call Amazon S3 by using a GET request to access the object without PII.

Answer: C

Explanation:
S3 Object Lambda allows you to add your own code to process data retrieved from S3 before returning it to an application. You can use an AWS Lambda function to modify the data, such as removing PII, redacting confidential information, or resizing images. You can create an S3 Object Lambda access point and associate it with your Lambda function. Then, you can use the access point to request objects from S3 and get the modified data back. This way, you can maintain only one copy of the original document in S3 and apply different transformations depending on who accesses it. Reference: Using AWS Lambda with Amazon S3

NEW QUESTION # 540
An Amazon Simple Queue Service (Amazon SQS) queue serves as an event source for an AWS Lambda function. In the SQS queue, each item corresponds to a video file that the Lambda function must convert to a smaller resolution. The Lambda function is timing out on longer video files, but the Lambda function's timeout is already configured to its maximum value.
What should a developer do to avoid the timeouts without additional code changes?

A. Increase the memory configuration of the Lambda function.
B. Use multi-threading for the conversion.
C. Increase the instance size of the host that runs the Lambda function.
D. Increase the visibility timeout on the SQS queue.

Answer: B

NEW QUESTION # 541
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