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Amazon DVA-C02 Exam Syllabus Topics:

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

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                                Amazon AWS Certified Developer - Associate Sample Questions (Q872-Q877):

                                NEW QUESTION # 872
                                A developer is modifying an AWS Lambda function that accesses an Amazon RDS for MySQL database. The developer discovers that the Lambda function has the database credentials stored as plaintext in the Lambda function code.
                                The developer must implement a solution to make the credentials more secure. The solution must include automated credential rotation every 30 days.
                                Which solution will meet these requirements?

                                Answer: C

                                Explanation:
                                AWS Secrets Manager is designed to securely store and manage sensitive credentials. It provides built-in support for automated rotation (including every 30 days) and can integrate seamlessly with your Lambda function, eliminating the need to embed plaintext credentials in your code. This approach enhances security while reducing manual intervention.


                                NEW QUESTION # 873
                                A company has a large amount of data in an Amazon DynamoDB table. A large batch of data is appended to the table once each day. The company wants a solution that will make all the existing and future data in DynamoDB available for analytics on a long-term basis.
                                Which solution meets these requirements with the LEAST operational overhead?

                                Answer: A


                                NEW QUESTION # 874
                                A developer is troubleshooting an Amazon API Gateway API Clients are receiving HTTP 400 response errors when the clients try to access an endpoint of the API.
                                How can the developer determine the cause of these errors?

                                Answer: A

                                Explanation:
                                This solution will meet the requirements by using Amazon CloudWatch Logs to capture and analyze the logs from API Gateway. Amazon CloudWatch Logs is a service that monitors, stores, and accesses log files from AWS resources. The developer can turn on execution logging and access logging in Amazon CloudWatch Logs for the API stage, which enables logging information about API execution and client access to the API.
                                The developer can create a CloudWatch Logs log group, which is a collection of log streams that share the same retention, monitoring, and access control settings. The developer can specify the Amazon Resource Name (ARN) of the log group for the API stage, which instructs API Gateway to send the logs to the specified log group. The developer can then examine the logs to determine the cause of the HTTP 400 response errors. Option A is not optimal because it will create an Amazon Kinesis Data Firehose delivery stream to receive API call logs from API Gateway, which may introduce additional costs and complexity for delivering and processing streaming data. Option B is not optimal because it will turn on AWS CloudTrail Insights and create a trail, which is a feature that helps identify and troubleshoot unusual API activity or operational issues, not HTTP response errors. Option C is not optimal because it will turn on AWS X-Ray for the API stage, which is a service that helps analyze and debug distributed applications, not HTTP response errors.


                                NEW QUESTION # 875
                                A company regularly receives route status updates from its delivery trucks as events in Amazon EventBridge.
                                The company is building an API-based application in a VPC that will consume and process the events to create a delivery status dashboard. The API application must not be available by using public IP addresses because of security and compliance requirements.
                                How should the company send events from EventBridge to the API application?

                                Answer: B

                                Explanation:
                                * Why Option A is Correct:Running an AWS Lambda function within the same VPC ensures secure communication without exposing the API application to public IP addresses. The Lambda function can serve as a secure EventBridge target to send events to the API.
                                * Why Other Options are Incorrect:
                                * Option B & C: Internet-facing load balancers expose public IP addresses, which violates compliance requirements.
                                * Option D: EventBridge cannot directly target an endpoint within a private VPC without intermediary services like Lambda.
                                * AWS Documentation References:
                                * EventBridge Targets


                                NEW QUESTION # 876
                                A company is planning to securely manage one-time fixed license keys in AWS. The company's development team needs to access the license keys in automaton scripts that run in Amazon EC2 instances and in AWS CloudFormation stacks.
                                Which solution will meet these requirements MOST cost-effectively?

                                Answer: D

                                Explanation:
                                Explanation
                                AWS Systems Manager Parameter Store is a service that provides secure, hierarchical storage for configuration data and secrets. Parameter Store supports SecureString parameters, which are encrypted using AWS Key Management Service (AWS KMS) keys. SecureString parameters can be used to store license keys in AWS and retrieve them securely from automation scripts that run in EC2 instances or CloudFormation stacks. Parameter Store is a cost-effective solution because it does not charge for storing parameters or API calls. Reference: Working with Systems Manager parameters


                                NEW QUESTION # 877
                                ......

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