Amazon DVA-C02題庫更新 & DVA-C02考題資訊

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

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最新的 AWS Certified Associate DVA-C02 免費考試真題 (Q341-Q346):

問題 #341
A team of developed is using an AWS CodePipeline pipeline as a continuous integration and continuous delivery (CI/CD) mechanism for a web application. A developer has written unit tests to programmatically test the functionality of the application code. The unit tests produce a test report that shows the results of each individual check. The developer now wants to run these tests automatically during the CI/CD process.

  • A. Add a new stage to the pipeline. Use AWS CodeBuild at the provider. Add the new stage before the stage that deploys code revisions to the test environment. Write a buildspec that fails the CodeBuild stage it any test does not pass. Use the test reports feature of CodeBuild to integrate the report with the CodeBuild console. View the test results in codeBuild Resolve any issues.
  • B. Add a new stage to the pipeline. Use Jenkins as the provider. Configure CodePipeline to use Jenkins to run the unit tests. Write a Jenkinsfile that fails the stage if any test does not pass. Use the test report plugin for Jenkins to integrate the repot with the Jenkins dashboard. View the test results in Jenkins. Resolve any issues.
  • C. Add a new stage to the pipeline. Use AWS CodeBuild as the provider. Add the new stage after the stage that deploys code revisions to the test environment. Write a buildspec that fails the CodeBuild stage if any test does not pass. Use the test reports feature of Codebuild to integrate the report with the CodoBuild console. View the test results in CodeBuild Resolve any issues.
  • D. Write a Git pre-commit hook that runs the test before every commit. Ensure that each developer who is working on the project has the pre-commit hook instated locally. Review the test report and resolve any issues before pushing changes to AWS CodeCommit.

答案:A

解題說明:
The solution that will meet the requirements is to add a new stage to the pipeline. Use AWS CodeBuild as the provider. Add the new stage before the stage that deploys code revisions to the test environment. Write a buildspec that fails the CodeBuild stage if any test does not pass. Use the test reports feature of CodeBuild to integrate the report with the CodeBuild console. View the test results in CodeBuild. Resolve any issues. This way, the developer can run the unit tests automatically during the CI/CD process and catch any bugs before deploying to the test environment. The developer can also use the test reports feature of CodeBuild to view and analyze the test results in a graphical interface. The other options either involve running the tests manually, running them after deployment, or using a different provider that requires additional configuration and integration.


問題 #342
A developer is creating an application that includes an Amazon API Gateway REST API in the us- east-2 Region. The developer wants to use Amazon CloudFront and a custom domain name for the API. The developer has acquired an SSL/TLS certificate for the domain from a third-party provider. How should the developer configure the custom domain for the application?

  • A. Import the SSL/TLS certificate into AWS Certificate Manager (ACM) in the same Region as the API. Create a DNS CNAME record for the custom domain.
  • B. Import the SSL/TLS certificate into AWS Certificate Manager (ACM) in the us-east-1 Region.Create a DNS CNAME record for the custom domain.
  • C. Import the SSL/TLS certificate into AWS Certificate Manager (ACM) in the same Region as the API. Create a DNS A record for the custom domain.
  • D. Import the SSL/TLS certificate into CloudFront. Create a DNS CNAME record for the custom domain.

答案:B

解題說明:
To use a certificate in AWS Certificate Manager (ACM) to require HTTPS between viewers and CloudFront, make sure you request (or import) the certificate in the US East (N. Virginia) Region (us-east-1).
https://docs.aws.amazon.com/AmazonCloudFront/latest/DeveloperGuide/cnames-and-https- requirements.html
https://docs.aws.amazon.com/AmazonCloudFront/latest/DeveloperGuide/CNAMEs.html


問題 #343
A developer is integrating Amazon ElastiCache in an application. The cache will store data from a database.
The cached data must populate real-time dashboards. Which caching strategy will meet these requirements?

  • A. A write-through cache
  • B. A read-through cache
  • C. A lazy-loading cache
  • D. A write-behind cache

答案:A


問題 #344
A developer is building a serverless application on AWS for a workflow that processes high volumes of data. In the workflow, an AWS Step Functions state machine invokes several AWS Lambda functions.
One of the Lambda functions occasionally fails because of timeout errors during periods of high demand. The developer must ensure that the workflow automatically retries the failed function invocation if a timeout error occurs.
Which solution will meet this requirement?

  • A. Update the Step Functions state machine to pass the invocation request to an Amazon Simple Notification Service (Amazon SNS) topic. Subscribe a Lambda function to the SNS topic.Configure the Lambda function with the maximum number of retry attempts for a timeout error type.
  • B. Add a Retry field in the Step Functions state machine definition. Configure the state machine with the maximum number of retry attempts and the timeout error type to retry on.
  • C. Add a Fail state to the Step Functions state machine definition. Configure the state machine with the maximum number of retry attempts.
  • D. Add a Timeout field in the Step Functions state machine definition. Configure the state machine with the maximum number of retry attempts.

答案:B


問題 #345
A developer is creating an AWS Lambda function that needs credentials to connect to an Amazon RDS for MySQL database. An Amazon S3 bucket currently stores the credentials. The developer needs to improve the existing solution by implementing credential rotation and secure storage. The developer also needs to provide integration with the Lambda function.
Which solution should the developer use to store and retrieve the credentials with the LEAST management overhead?

  • A. Encrypt the credentials with the default AWS Key Management Service (AWS KMS) key. Store the credentials as environment variables for the Lambda function. Create a second Lambda function to generate new credentials and to rotate the credentials by updating the environment variables of the first Lambda function. Invoke the second Lambda function by using an Amazon EventBridge rule that runs on a schedule. Update the database to use the new credentials. On the first Lambda function, retrieve the credentials from the environment variables. Decrypt the credentials by using AWS KMS, Connect to the database.
  • B. Encrypt the credentials by using AWS Key Management Service (AWS KMS). Store the credentials in an Amazon DynamoDB table. Create a second Lambda function to rotate the credentials. Invoke the second Lambda function by using an Amazon EventBridge rule that runs on a schedule. Update the DynamoDB table. Update the database to use the generated credentials. Retrieve the credentials from DynamoDB with the first Lambda function. Connect to the database.
  • C. Store the credentials in AWS Systems Manager Parameter Store. Select the database that the parameter will access. Use the default AWS Key Management Service (AWS KMS) key to encrypt the parameter.
    Enable automatic rotation for the parameter. Use the parameter from Parameter Store on the Lambda function to connect to the database.
  • D. Store the credentials in AWS Secrets Manager. Set the secret type to Credentials for Amazon RDS database. Select the database that the secret will access. Use the default AWS Key Management Service (AWS KMS) key to encrypt the secret. Enable automatic rotation for the secret. Use the secret from Secrets Manager on the Lambda function to connect to the database.

答案:D

解題說明:
Explanation
AWS Secrets Manager is a service that helps you protect secrets needed to access your applications, services, and IT resources. Secrets Manager enables you to store, retrieve, and rotate secrets such as database credentials, API keys, and passwords. Secrets Manager supports a secret type for RDS databases, which allows you to select an existing RDS database instance and generate credentials for it. Secrets Manager encrypts the secret using AWS Key Management Service (AWS KMS) keys and enables automatic rotation of the secret at a specified interval. A Lambda function can use the AWS SDK or CLI to retrieve the secret from Secrets Manager and use it to connect to the database. Reference: Rotating your AWS Secrets Manager secrets


問題 #346
......

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