DVA-C02無料模擬試験 & DVA-C02学習教材

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Amazon DVA-C02 Exam Syllabus Topics:

SectionWeightObjectives
Security26%- Implement authentication and/or authorization for applications and AWS services
  • 1. Identity federation (SAML, OpenID Connect, Amazon Cognito)
  • 2. Role-based access control (RBAC)
  • 3. Resource-based policies, service policies, and principal policies
  • 4. Bearer tokens (JWT, OAuth, AWS STS)
  • 5. User pools and identity pools in Amazon Cognito
- Manage sensitive data in application code
  • 1. Environment variables
  • 2. AWS Systems Manager Parameter Store
  • 3. AWS Secrets Manager
  • 4. Encryption of data at rest and in transit
- Implement encryption by using AWS services
  • 1. AWS Certificate Manager
  • 2. AWS CloudHSM
  • 3. AWS KMS
  • 4. AWS Secrets Manager
  • 5. Amazon S3 encryption
Troubleshooting and Optimization18%- Instrument code for observability
  • 1. Amazon CloudWatch metrics
  • 2. Structured logging
  • 3. Custom metrics
  • 4. AWS X-Ray
  • 5. Amazon CloudWatch alarms
- Assist in a root cause analysis
  • 1. Amazon CloudWatch Logs
  • 2. AWS X-Ray
  • 3. AWS CloudTrail
  • 4. Error handling and retries
  • 5. Application logging
- Optimize applications by using AWS services and features
  • 1. Caching strategies (ElastiCache, CloudFront)
  • 2. Concurrency and throttling
  • 3. Memory and compute optimization
  • 4. Cost optimization
  • 5. Data storage optimization
Deployment24%- Automate deployment testing
  • 1. AWS CodePipeline
  • 2. AWS CodeCommit
  • 3. AWS CodeDeploy
  • 4. AWS CodeBuild
- Prepare application artifacts to be deployed to AWS
  • 1. Docker containers
  • 2. Lambda deployment packages
  • 3. AWS CDK
  • 4. AWS CloudFormation
  • 5. AWS SAM
- Deploy code by using AWS CI/CD services
  • 1. GitHub integration
  • 2. Rolling deployments
  • 3. Blue/green deployments
  • 4. AWS CodePipeline
  • 5. Canary deployments
  • 6. AWS CodeCommit
  • 7. AWS CodeDeploy
  • 8. AWS CodeBuild
- Test applications in development environments
  • 1. AWS SAM local
  • 2. Mocking AWS services
  • 3. Local testing of Lambda functions
Development with AWS Services32%- Develop code for AWS serverless applications
  • 1. Amazon API Gateway
  • 2. Amazon EventBridge
  • 3. AWS AppSync
  • 4. AWS Step Functions
- Develop code for applications hosted on AWS
  • 1. Amazon S3
  • 2. AWS SDKs
  • 3. Amazon DynamoDB
  • 4. Amazon API Gateway
  • 5. AWS CLI
  • 6. Amazon Cognito
  • 7. AWS CloudFormation
  • 8. AWS Lambda
  • 9. Amazon SQS
  • 10. Amazon SNS
- Use data stores in application development
  • 1. Amazon S3
  • 2. Amazon DynamoDB
  • 3. Amazon RDS
  • 4. Amazon EFS
  • 5. Amazon ElastiCache

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Amazon AWS Certified Developer - Associate 認定 DVA-C02 試験問題 (Q438-Q443):

質問 # 438
A company wants to launch a REST API across multiple environments. The company needs to configure staging testing, and production environments.
The configuration must provide built-in support for version control. The team must be able to promote the test environment to the production environment when required.
Which solution will meet these requirements in the MOST operationally efficient way?

正解：A

解説：
Amazon API Gateway stages provide separate staging, testing, and production environments for the same REST API. Each stage can reference a specific immutable API deployment, which provides deployment versioning and enables a tested deployment to be promoted to production efficiently.


質問 # 439
A company wants to migrate applications from its on-premises servers to AWS. As a first step, the company is modifying and migrating a non-critical application to a single Amazon EC2 instance. The application will store information in an Amazon S3 bucket. The company needs to follow security best practices when deploying the application on AWS.
Which approach should the company take to allow the application to interact with Amazon S3?

正解：C


質問 # 440
A developer is building various microservices for an application that will run on Amazon EC2 instances. The developer needs to monitor the end-to-end view of the requests between the microservices and debug any issues in the various microservices. What should the developer do to accomplish these tasks?

正解：D


質問 # 441
A developer is creating a new application that will give users the ability to upload documents to Amazon S3. The contents of the documents must not be accessible to any third party.
Which type of encryption will meet this requirement?

正解：C

解説：
SSE-S3 is a fully managed encryption solution provided by Amazon S3. It automatically encrypts the documents before storing them and decrypts them when accessed. The encryption keys are managed by Amazon S3, and no third parties (other than the user with the proper permissions) can access the encrypted data. This solution ensures that the contents of the documents are kept secure and inaccessible to unauthorized parties, while being simple to implement and manage.


質問 # 442
A gaming application stores scores for players in an Amazon DynamoDB table that has four attributes:
user_id, user_name, user_score, and user_rank. The users are allowed to update their names only. A user is authenticated by web identity federation.
Which set of conditions should be added in the policy attached to the role for the dynamodb:PutItem API call?

正解：C

解説：
The correct policy condition ensures that:
* The LeadingKeys condition restricts operations to the authenticated user's user_id.
* The Attributes condition limits the updatable attributes to user_name.
Explanation of Choices:
* Option A: Correctly enforces both the key restriction (dynamodb:LeadingKeys) and ensures only the user_name attribute can be updated.
* Option B, C, D: Use incorrect conditions, such as referencing user_name in the LeadingKeys or including other attributes like user_id in updatable fields.


質問 # 443
......

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