試験の準備方法-信頼的なDVA-C02合格記試験-100％合格率のDVA-C02学習範囲

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Amazon DVA-C02 Exam Syllabus Topics:

SectionWeightObjectives
Topic 1: Security26%- Secure application data
  • 1. Manage secrets and credentials securely
  • 2. Implement encryption at rest and in transit
- Apply security best practices
  • 1. Validate application security configurations
  • 2. Follow AWS Well-Architected Framework security principles
- Implement authentication and authorization
  • 1. Manage IAM roles, policies, and permissions
  • 2. Use Amazon Cognito for identity management
Topic 2: Deployment24%- Deploy applications on AWS
  • 1. Perform safe updates and rollbacks
  • 2. Deploy to AWS Lambda, Amazon EC2, Elastic Beanstalk
- Prepare application artifacts for deployment
  • 1. Package code and dependencies
  • 2. Use infrastructure as code (AWS CloudFormation, AWS SAM)
- Implement CI/CD pipelines
  • 1. Use AWS CodePipeline, CodeBuild, CodeDeploy
  • 2. Automate deployment and testing workflows
Topic 3: Troubleshooting and Optimization18%- Optimize application performance
  • 1. Improve latency and throughput
  • 2. Optimize resource usage and costs
- Troubleshoot application issues
  • 1. Use Amazon CloudWatch, AWS X-Ray for monitoring
  • 2. Analyze logs, metrics, and traces
- Debug and resolve errors
  • 1. Identify and fix code defects
  • 2. Resolve integration and configuration problems
Topic 4: Development with AWS Services32%- Interact with AWS data services
  • 1. Implement caching and data storage strategies
  • 2. Work with Amazon DynamoDB, Amazon S3
- Integrate AWS services into applications
  • 1. Use AWS Lambda, API Gateway, Amazon EventBridge
  • 2. Implement messaging and event-driven workflows
- Write code for applications hosted on AWS
  • 1. Use AWS SDKs and APIs
  • 2. Develop serverless applications
  • 3. Implement architectural patterns

>> DVA-C02合格記 <<

DVA-C02学習範囲 & DVA-C02シュミレーション問題集

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Amazon AWS Certified Developer - Associate 認定 DVA-C02 試験問題 (Q279-Q284):

質問 # 279
A developer is creating an application that will store personal health information (PHI). The PHI needs to be encrypted at all times. An encrypted Amazon RDS for MySQL DB instance is storing the data. The developer wants to increase the performance of the application by caching frequently accessed data while adding the ability to sort or rank the cached datasets.
Which solution will meet these requirements?

正解：A

解説：
Amazon ElastiCache is a service that offers fully managed in-memory data stores that are compatible with Redis or Memcached. The developer can create an ElastiCache for Redis instance and enable encryption of data in transit and at rest. This will ensure that the PHI is encrypted at all times. The developer can store frequently accessed data in the cache and use Redis features such as sorting and ranking to enhance the performance of the application.
References:
* [What Is Amazon ElastiCache? - Amazon ElastiCache]
* [Encryption in Transit - Amazon ElastiCache for Redis]
* [Encryption at Rest - Amazon ElastiCache for Redis]


質問 # 280
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'?

正解：B

解説：
* Visibility Timeout: When an SQS message is processed by a consumer (here, the Lambda function), it's temporarily hidden from other consumers. Visibility timeout controls this duration.
* How It Helps:
* Increase the visibility timeout beyond the maximum processing time your Lambda might typically take for long videos.
* This prevents the message from reappearing in the queue while Lambda is still working, avoiding premature timeouts.
References:
* SQS Visibility Timeout: https://docs.aws.amazon.com/AWSSimpleQueueService/latest
/SQSDeveloperGuide/sqs-visibility-timeout.html


質問 # 281
An AWS Lambda function requires read access to an Amazon S3 bucket and requires read/write access to an Amazon DynamoDB table The correct 1AM policy already exists What is the MOST secure way to grant the Lambda function access to the S3 bucket and the DynamoDB table?

正解：A

解説：
* Principle of Least Privilege: Granting specific permissions through an IAM role is more secure than directly attaching policies to a function or using root user credentials.
* IAM Roles for Lambda: Designed to provide temporary credentials to Lambda functions, enhancing security.
* Reusability: The existing IAM policy ensures the correct S3 and DynamoDB access is granted.
References:
IAM Roles for Lambda Documentation: https://docs.aws.amazon.com/lambda/latest/dg/lambda-intro- execution-role.html IAM Best Practices: https://docs.aws.amazon.com/IAM/latest/UserGuide/best-practices.html


質問 # 282
A developer has an application that stores data in an Amazon S3 bucket. The application uses an HTTP API to store and retrieve objects. When the PutObject API operation adds objects to the S3 bucket the developer must encrypt these objects at rest by using server-side encryption with Amazon S3 managed keys (SSE-S3).
Which solution will meet this requirement?

正解：A

解説：
https://docs.aws.amazon.com/AmazonS3/latest/userguide/UsingServerSideEncryption.html


質問 # 283
A company has a front-end application that runs on four Amazon EC2 instances behind an Elastic Load Balancer (ELB) in a production environment that is provisioned by AWS Elastic Beanstalk.
A developer needs to deploy and test new application code while updating the Elastic Beanstalk platform from the current version to a newer version of Node.js. The solution must result in zero downtime for the application.
Which solution meets these requirements?

正解：B

解説：
A developer also needs to update to a new platform version and it's more likely a new major version of node.js. To update to the new major version there is only one method and it is a blue/green deployment by creating (cloning) a new environment with the latest platform version.
Then deploy a new app version to it. Test it, then swap the env URL without downtime.
Not C: While an immutable update can ensure zero downtime during the deployment process, it doesn't account for updating the Elastic Beanstalk platform version.


質問 # 284
......

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