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Amazon DVA-C02 Exam Syllabus Topics:

Section	Weight	Objectives
Topic 1: Deployment	24%	- Automate deployment testing 1. AWS CodeDeploy 2. AWS CodeBuild 3. AWS CodeCommit 4. AWS CodePipeline - Prepare application artifacts to be deployed to AWS 1. Lambda deployment packages 2. Docker containers 3. AWS CloudFormation 4. AWS SAM 5. AWS CDK - Deploy code by using AWS CI/CD services 1. Blue/green deployments 2. AWS CodeDeploy 3. GitHub integration 4. AWS CodeBuild 5. AWS CodeCommit 6. Rolling deployments 7. Canary deployments 8. AWS CodePipeline - Test applications in development environments 1. Mocking AWS services 2. Local testing of Lambda functions 3. AWS SAM local
Topic 2: Troubleshooting and Optimization	18%	- Assist in a root cause analysis 1. Application logging 2. AWS CloudTrail 3. Amazon CloudWatch Logs 4. Error handling and retries 5. AWS X-Ray - Optimize applications by using AWS services and features 1. Cost optimization 2. Concurrency and throttling 3. Caching strategies (ElastiCache, CloudFront) 4. Memory and compute optimization 5. Data storage optimization - Instrument code for observability 1. Custom metrics 2. Amazon CloudWatch metrics 3. Amazon CloudWatch alarms 4. Structured logging 5. AWS X-Ray
Topic 3: Development with AWS Services	32%	- Develop code for applications hosted on AWS 1. Amazon DynamoDB 2. AWS CLI 3. Amazon SNS 4. Amazon S3 5. Amazon SQS 6. AWS Lambda 7. AWS CloudFormation 8. Amazon Cognito 9. AWS SDKs 10. Amazon API Gateway - Use data stores in application development 1. Amazon DynamoDB 2. Amazon ElastiCache 3. Amazon S3 4. Amazon EFS 5. Amazon RDS - Develop code for AWS serverless applications 1. AWS AppSync 2. Amazon EventBridge 3. AWS Step Functions 4. Amazon API Gateway
Topic 4: Security	26%	- Implement encryption by using AWS services 1. AWS KMS 2. AWS Secrets Manager 3. AWS CloudHSM 4. AWS Certificate Manager 5. Amazon S3 encryption - Manage sensitive data in application code 1. AWS Systems Manager Parameter Store 2. AWS Secrets Manager 3. Encryption of data at rest and in transit 4. Environment variables - Implement authentication and/or authorization for applications and AWS services 1. User pools and identity pools in Amazon Cognito 2. Role-based access control (RBAC) 3. Identity federation (SAML, OpenID Connect, Amazon Cognito) 4. Bearer tokens (JWT, OAuth, AWS STS) 5. Resource-based policies, service policies, and principal policies

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Amazon AWS Certified Developer - Associate Sample Questions (Q703-Q708):

NEW QUESTION # 703
A company has a two-tier application that runs on Amazon EC2 instances behind an Application Load Balancer (ALB). The EC2 instances are in an Auto Scaling group. The Auto Scaling group is configured with a lifecycle hook that uses the default health checks for the EC2 instances.
During a recent change deployment, the ALB reported HTTP 502 errors. When a developer checked the target group, some of the EC2 instances were marked as unhealthy. However, the Auto Scaling group was not replacing the unhealthy EC2 instances.
Which configuration change should the developer make to replace the unhealthy EC2 instances?

A. Update the Auto Scaling group's health check from Amazon EC2 to Elastic Load Balancing (ELB).
B. Update the lifecycle hook to wait for the application to install.
C. Increase the cooldown period of the Auto Scaling group from its default value.
D. Set the health check grace period for the Auto Scaling group.

Answer: A

NEW QUESTION # 704
A company is using Amazon API Gateway to develop an API for its application on AWS. A developer needs to test and generate API responses. Other teams are required to test the API immediately.
What should the developer do to meet these requirements?

A. Set up the request validators in the API ' s OpenAPI definition file. Import the OpenAPI definitions into API Gateway to test the API.
B. Set up a mock integration request in API Gateway. Configure the method ' s integration request and integration response to associate a response with a given status code.
C. Set up a request parameter-based Lambda authorizer to control access to the API. Configure the Lambda function with the necessary mapping template.
D. Set up a gateway response for the API in API Gateway. Configure response headers with hardcoded HTTP status codes and responses.

Answer: B

Explanation:
API Gateway mock integration is designed for exactly this situation: generating API responses directly from API Gateway without requiring a working backend. This lets dependent teams test immediately while the real backend is still being developed. The developer can configure the integration request and integration response mapping to return specific payloads and status codes. Request validators check incoming requests but do not generate backend responses. Gateway responses customize API Gateway-generated error responses, not normal business responses for application testing. A Lambda authorizer controls access and would require a Lambda function, which adds unnecessary implementation work. AWS documentation confirms that mock integrations let API developers generate responses directly from API Gateway and unblock teams before backend development is complete. ( AWS Documentation )

NEW QUESTION # 705
A company hosts a stateless web application with low data storage in a single AWS Region. The company wants to increase the resiliency of the application to include a multi-Region presence. The company wants to set the recovery time objective (RTO) and recovery point objective (RPO) to hours. The company needs a low-cost and low-complexity disaster recovery (DR) strategy.
Which DR strategy should the company use?

A. Pilot light
B. Backup and restore
C. Multi-site active-active
D. Warm standby

Answer: A

Explanation:
* Why Option B is Correct:The pilot light strategy keeps a minimal version of the environment in another Region and scales up during a disaster. It achieves an RTO and RPO of hours at a low cost and complexity.
* Why Other Options are Incorrect:
* Option A: Warm standby is more expensive as it keeps a scaled-down, fully functioning version running in another Region.
* Option C: Backup and restore has a longer RTO and RPO than hours.
* Option D: Multi-site active-active is costly and more complex than required.
* AWS Documentation References:
* Disaster Recovery Strategies on AWS

NEW QUESTION # 706
A developer is receiving HTTP 400: ThrottlingException errors intermittently when calling the Amazon CloudWatch API. When a call fails, no data is retrieved.
What best practice should first be applied to address this issue?

A. Contact AWS Support for a limit increase.
B. Use the AWS CLI to get the metrics.
C. Analyze the applications and remove the API call.
D. Retry the call with exponential backoff.

Answer: D

NEW QUESTION # 707
A developer is building an application that stores user activity data in an Amazon DynamoDB table. The developer is writing a new AWS Lambda function to process the activity data. The developer grants the IAM role that the function assumes permissions to query the table. The developer must ensure that the function does not have access to personally identifiable information (PII) that is stored in some of the table item attributes. Which solutions will meet these requirements? (Choose two.)

A. Create an AWS KMS customer managed key. Use envelope encryption to encrypt PII attributes in the table.
B. Create an AWS KMS customer managed key. Use the customer managed key to encrypt the table.
C. Enable attribute-based access control for the DynamoDB table. Configure the IAM role policy for the function to allow access to the table based on resource tags.
D. Update the function to use a projection expression when the table is queried to control which attributes the query returns.
E. Create a resource-based policy for the DynamoDB table. Include a policy statement to deny access based on attributes.

Answer: A,E

Explanation:
A DynamoDB resource-based policy can use fine-grained access-control conditions to deny retrieval of specified PII attributes, enforcing the restriction at the service level.
Client-side envelope encryption can encrypt only the PII attributes with a customer managed KMS key. By withholding decrypt permission from the Lambda function's execution role, the function cannot access the plaintext PII even when it retrieves the table items.

NEW QUESTION # 708
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