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Amazon DVA-C02 Exam Syllabus Topics:

SectionWeightObjectives
Topic 1: Troubleshooting and Optimization18%- Performance optimization
  • 1. Fault tolerance and resilience patterns
    • 2. Application performance tuning
      - Monitoring and logging
      • 1. Amazon CloudWatch metrics and logs
        Topic 2: Deployment24%- CI/CD and deployment strategies
        • 1. AWS CodeBuild and CodeDeploy usage
          • 2. AWS CodePipeline workflows
            - Infrastructure as code
            • 1. AWS CloudFormation templates
              Topic 3: Security26%- Application authentication and authorization
              • 1. IAM roles and policies
                • 2. Cognito user authentication
                  - Data security
                  • 1. Secure API access patterns
                    • 2. Encryption using AWS KMS
                      Topic 4: Development with AWS Services32%- AWS core services development
                      • 1. Amazon DynamoDB integration patterns
                        • 2. AWS Lambda functions development
                          • 3. Amazon S3 usage in applications
                            - Application development and integration
                            • 1. API Gateway and REST APIs
                              • 2. Event-driven architectures with SNS/SQS

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                                Amazon AWS Certified Developer - Associate Sample Questions (Q366-Q371):

                                NEW QUESTION # 366
                                A company is migrating its PostgreSQL database into the AWS Cloud. The company wants to use a database that will secure and regularly rotate database credentials. The company wants a solution that does not require additional programming overhead.
                                Which solution will meet these requirements?

                                Answer: A

                                Explanation:
                                Explanation
                                This solution meets the requirements because it uses a PostgreSQL-compatible database that can secure and regularly rotate database credentials without requiring additional programming overhead. Amazon Aurora PostgreSQL is a relational database service that is compatible with PostgreSQL and offers high performance, availability, and scalability. AWS Secrets Manager is a service that helps you protect secrets needed to access your applications, services, and IT resources. You can store database credentials in AWS Secrets Manager and use them to access your Aurora PostgreSQL database. You can also enable automatic rotation of your secrets according to a schedule or an event. AWS Secrets Manager handles the complexity of rotating secrets for you, such as generating new passwords and updating your database with the new credentials. Using Amazon DynamoDB for the database will not meet the requirements because it is a NoSQL database that is not compatible with PostgreSQL. Using AWS Systems Manager Parameter Store for storing and rotating database credentials will require additional programming overhead to integrate with your database.


                                NEW QUESTION # 367
                                A developer created an AWS Lambda function named ProcessMessages. The Lambda function is invoked asynchronously when a message is published to an Amazon Simple Notification Service (Amazon SNS) topic named InputTopic. The developer uses a second SNS topic named ErrorTopic to handle alerts of failures for other services.
                                The developer wants to receive notifications from the ErrorTopic SNS topic when the ProcessMessages Lambda function fails to process a message.
                                Which solution will meet this requirement?

                                Answer: A


                                NEW QUESTION # 368
                                A company is providing read access to objects in an Amazon S3 bucket for different customers.
                                The company uses IAM permissions to restrict access to the S3 bucket. The customers can access only their own files.
                                Due to a regulation requirement, the company needs to enforce encryption in transit for interactions with Amazon S3.
                                Which solution will meet these requirements?

                                Answer: A

                                Explanation:
                                This solution enforces encryption in transit for interactions with Amazon S3 by denying access to the S3 bucket if the request is not made over an HTTPS connection. This condition can be enforced by using the "aws:SecureTransport" condition key in a bucket policy.


                                NEW QUESTION # 369
                                A developer has an application that is composed of many different AWS Lambda functions. The Lambda functions all use some of the same dependencies. To avoid security issues the developer is constantly updating the dependencies of all of the Lambda functions. The result is duplicated effort to reach function.
                                How can the developer keep the dependencies of the Lambda functions up to date with the LEAST additional complexity?

                                Answer: C

                                Explanation:
                                Explanation
                                This solution allows the developer to keep the dependencies of the Lambda functions up to date with the least additional complexity because it eliminates the need to update each function individually. A Lambda layer is a ZIP archive that contains libraries, custom runtimes, or other dependencies. The developer can create a layer that contains all of the shared dependencies and attach it to multiple Lambda functions. When the developer updates the layer, all of the functions that use the layer will have access to the latest version of the dependencies.


                                NEW QUESTION # 370
                                A company has many microservices that are comprised of AWS Lambda functions. Multiple teams within the company split ownership of the microservices. An application reads configuration values from environment variables that are contained in the Lambda functions.
                                During a security audit, the company discovers that some of the environment variables contain sensitive information.
                                The company's security policy requires each team to have full control over the rotation of AWS KMS keys that the team uses for its respective microservices.
                                Which solution will meet these requirements?

                                Answer: B

                                Explanation:
                                Customer-managed KMS keys are required to meet the security policy requirement of team- specific control over KMS key rotation. Each team can manage the lifecycle of its own key. The kms:Decrypt permission allows the Lambda function execution roles to decrypt the environment variables during runtime.
                                This solution adheres to the principle of least privilege and satisfies the need for team-specific key control.


                                NEW QUESTION # 371
                                ......

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