New DVA-C02 Dumps Questions - DVA-C02 Latest Cram Materials

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Amazon DVA-C02 Exam Syllabus Topics:

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

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Amazon AWS Certified Developer - Associate Sample Questions (Q815-Q820):

NEW QUESTION # 815
A company has an application that uses Amazon Cognito user pools as an identity provider. The company must secure access to user records. The company has set up multi-factor authentication (MFA). The company also wants to send a login activity notification by email every time a user logs in.
What is the MOST operationally efficient solution that meets this requirement?

Answer: C

Explanation:
https://docs.aws.amazon.com/cognito/latest/developerguide/user-pool-lambda-post- authentication.html


NEW QUESTION # 816
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?

Answer: C

Explanation:
Explanation
The most secure way to grant the Lambda function access to the S3 bucket and the DynamoDB table is to create an IAM role for the Lambda function and attach the existing IAM policy to the role. This way, you can use the principle of least privilege and avoid exposing any credentials in your function code or environment variables. You can also leverage the temporary security credentials that AWS provides to the Lambda function when it assumes the role. This solution follows the best practices for working with AWS Lambda functions1 and designing and architecting with DynamoDB2. References
* Best practices for working with AWS Lambda functions
* Best practices for designing and architecting with DynamoDB


NEW QUESTION # 817
A developer has an application that can upload tens of thousands of objects per second to Amazon S3 in parallel within a single AWS account. As part of new requirements, data stored in S3 must use server-side encryption with AWS KMS keys (SSE-KMS). After creating this change, performance of the application is slower. Which of the following is MOST likely the cause of the application latency?

Answer: C

Explanation:
When using SSE-KMS with Amazon S3, each PUT operation requires an AWS KMS Encrypt API call. If an application uploads tens of thousands of objects per second, it can exceed the KMS request rate limits, leading to throttling and increased latency. This is the most likely cause of the performance degradation.


NEW QUESTION # 818
Users are reporting errors in an application. The application consists of several micro services that are deployed on Amazon Elastic Container Serves (Amazon ECS) with AWS Fargate.
When combination of steps should a developer take to fix the errors? (Select TWO)

Answer: C,E

Explanation:
The combination of steps that the developer should take to fix the errors is to deploy AWS X-Ray as a sidecar container to the microservices and instrument the ECS task to send the stdout and stderr output to Amazon CloudWatch Logs. This way, the developer can use AWS X-Ray to analyze and debug the performance of the microservices and identify any issues or bottlenecks. The developer can also use CloudWatch Logs to monitor and troubleshoot the logs from the ECS task and detect any errors or exceptions. The other options either involve using AWS X-Ray as a daemon set, which is not supported by Fargate, or using the PutTraceSegments API call, which is not necessary when using a sidecar container.


NEW QUESTION # 819
A developer is building an application that uses an AWS Lambda function to process data. The application requires minimum latency. The Lambda function must have predictable function start times. All setup activities for the execution environment must happen before invocation of the Lambda function.
Which solution will meet these requirements?

Answer: A

Explanation:
Provisioned Concurrency ensures that your AWS Lambda function has pre-initialized execution environments ready to handle invocations with minimal latency, which is critical for applications that require predictable function start times and low latency. This removes the cold start problem by ensuring that all the setup activities (such as loading libraries or initializing execution environments) are completed before the function is invoked.


NEW QUESTION # 820
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