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Amazon DVA-C02 Exam Syllabus Topics:

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

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Amazon AWS Certified Developer - Associate Sample Questions (Q143-Q148):

NEW QUESTION # 143
A developer creates an AWS Lambda function that retrieves and groups data from several public API endpoints. The Lambda function has been updated and configured to connect to the private subnet of a VPC. An internet gateway is attached to the VPC. The VPC uses the default network ACL and security group configurations.
The developer finds that the Lambda function can no longer access the public API. The developer has ensured that the public API is accessible, but the Lambda function cannot connect to the API How should the developer fix the connection issue?

Answer: D

Explanation:
When a Lambda function is configured to connect to a VPC, it loses its default internet access. To allow the Lambda function to access the public internet, it must be connected to a private subnet in the VPC that is configured to route its traffic through a NAT Gateway (Network Address Translation Gateway).
The Internet Gateway is usually used to provide internet access to resources in the public subnet, but for resources in the private subnet, a NAT Gateway is required.


NEW QUESTION # 144
A company runs a batch processing application by using AWS Lambda functions and Amazon API Gateway APIs with deployment stages for development, user acceptance testing, and production. A development team needs to configure the APIs in the deployment stages to connect to third-party service endpoints.
Which solution will meet this requirement?

Answer: C


NEW QUESTION # 145
A company has a website that is developed in PHP and is launched using AWS Elastic Beanstalk. There is a new version of the website that needs to be deployed in the Elastic Beanstalk environment. The company cannot tolerate having the website offline if an update fails.
Deployments must have minimal impact and rollback as soon as possible.
Which Elastic Beanstalk deployment policy should the company use to meet these requirements?

Answer: D

Explanation:
The Immutable deployment method is the best choice when a company requires minimal downtime and automatic rollback in case of a failure. Here's why:
In Immutable deployments, a new set of instances is launched with the updated version. These instances are tested and validated before they replace the old instances. This ensures zero downtime and immediate rollback if the deployment fails.


NEW QUESTION # 146
A company is implementing an application on Amazon EC2 instances. The application needs to process incoming transactions. When the application detects a transaction that is not valid, the application must send a chat message to the company's support team. To send the message, the application needs to retrieve the access token to authenticate by using the chat API.
A developer needs to implement a solution to store the access token. The access token must be encrypted at rest and in transit. The access token must also be accessible from other AWS accounts.
Which solution will meet these requirements with the LEAST management overhead?

Answer: C

Explanation:
https://aws.amazon.com/premiumsupport/knowledge-center/secrets-manager-share-between- accounts/https://docs.aws.amazon.com/secretsmanager/latest/userguide/auth-and-access_examples_cross.html


NEW QUESTION # 147
A developer must provide an API key to an AWS Lambda function to authenticate with a third- party system. The Lambda function will run on a schedule. The developer needs to ensure that the API key remains encrypted at rest.
Which solution will meet these requirements?

Answer: B

Explanation:
Storing the API key as a Lambda environment variable using an AWS Key Management Service (AWS KMS) customer-managed key is the most secure solution. AWS KMS is a managed encryption service that provides customer-managed keys. Customer-managed keys are encrypted with an AWS KMS master key, which is stored in an AWS KMS vault.


NEW QUESTION # 148
......

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