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Amazon DVA-C02 Exam Syllabus Topics:

Section	Weight	Objectives
Topic 1: Security	26%	- Implement authentication and authorization 1. Use Amazon Cognito for identity management 2. Manage IAM roles, policies, and permissions - Apply security best practices 1. Follow AWS Well-Architected Framework security principles 2. Validate application security configurations - Secure application data 1. Implement encryption at rest and in transit 2. Manage secrets and credentials securely
Topic 2: Troubleshooting and Optimization	18%	- Debug and resolve errors 1. Identify and fix code defects 2. Resolve integration and configuration problems - Troubleshoot application issues 1. Analyze logs, metrics, and traces 2. Use Amazon CloudWatch, AWS X-Ray for monitoring - Optimize application performance 1. Optimize resource usage and costs 2. Improve latency and throughput
Topic 3: Development with AWS Services	32%	- 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. Implement caching and data storage strategies 2. Work with Amazon DynamoDB, Amazon S3 - Write code for applications hosted on AWS 1. Develop serverless applications 2. Implement architectural patterns 3. Use AWS SDKs and APIs
Topic 4: Deployment	24%	- Implement CI/CD pipelines 1. Automate deployment and testing workflows 2. Use AWS CodePipeline, CodeBuild, CodeDeploy - Deploy applications on AWS 1. Deploy to AWS Lambda, Amazon EC2, Elastic Beanstalk 2. Perform safe updates and rollbacks - Prepare application artifacts for deployment 1. Use infrastructure as code (AWS CloudFormation, AWS SAM) 2. Package code and dependencies

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Amazon AWS Certified Developer - Associate Sample Questions (Q619-Q624):

NEW QUESTION # 619
A developer is working on an ecommerce application that stores data in an Amazon RDS for MySQL cluster The developer needs to implement a caching layer for the application to retrieve information about the most viewed products.
Which solution will meet these requirements?

A. Create an Amazon DynamoDB Accelerator (DAX) cluster in front of the RDS for MySQL cluster.
Configure the application to connect to the DAX endpoint instead of the RDS endpoint.
B. Configure the RDS for MySQL cluster to add a standby instance in a different Availability Zone.Configure the application to read the data from the standby instance.
C. Create an Amazon ElastiCache (Redis OSS) cluster. Update the application code to use the ElastiCache (Redis OSS) cluster endpoint.
D. Edit the RDS for MySQL cluster by adding a cache node. Configure the cache endpoint instead of the duster endpoint in the application.

Answer: C

NEW QUESTION # 620
A healthcare company is developing a multi-tier web application to manage patient records that are in an Amazon Aurora PostgreSQL database cluster. The company stores the application code in a Git repository and deploys the code to Amazon EC2 instances. The application must comply with security policies and follow the principle of least privilege. The company must securely manage database credentials and API keys within the application code. The company must have the ability to rotate encryption keys on demand. Which solution will meet these requirements?

A. Store the database credentials and API keys in AWS Secrets Manager. Use customer managed AWS KMS keys. Set up automatic key rotation. Create a key policy in the application to retrieve secrets by using the AWS SDK.
B. Store database credentials and API keys in AWS Secrets Manager. Use AWS managed AWS KMS keys. Set up automatic key rotation. Use the AWS SDK to retrieve secrets.
C. Store the database credentials and API keys as parameters in AWS Systems Manager Parameter Store. Encrypt the credentials and API keys with AWS managed AWS KMS keys. Use the AWS SDK to retrieve secrets.
D. Store the database credentials in the application code. Separate credentials by using environment-specific branches that have restricted access to the code repositories.

Answer: A

Explanation:
AWS Secrets Manager provides secure storage and built-in credential rotation for your database passwords and API keys. By using a customer-managed KMS key, you retain full control over that key's lifecycle, including on-demand rotation, and you can grant your application IAM permission to decrypt only the secrets it needs. Storing secrets in Secrets Manager, configuring automatic rotation, and securing them with your own CMK satisfies least-privilege, secure secret management, and on-demand key rotation requirements.

NEW QUESTION # 621
A company has an application that is based on Amazon EC2. The company provides API access to the application through Amazon API Gateway and uses Amazon DynamoDB to store the application's data. A developer is investigating performance issues that are affecting the application. During peak usage, the application is overwhelmed by a large number of identical data read requests that come through APIs. What is the MOST operationally efficient way for the developer to improve the application's performance?

A. Use Amazon ElastiCache to cache application responses.
B. Enable API Gateway caching to cache API responses.
C. Configure Amazon EC2 Auto Scaling policies to meet fluctuating demand.
D. Use DynamoDB Accelerator (DAX) to cache database responses.

Answer: D

Explanation:
DynamoDB Accelerator (DAX) provides a managed caching layer specifically optimized for DynamoDB, reducing latency for repeated read requests.
Purpose-Built: DAX is designed for DynamoDB, enabling sub-millisecond response times for frequently accessed items.
Operational Efficiency: No need for additional application-level caching logic.

NEW QUESTION # 622
A developer is working on a new authorization mechanism for an application. The developer must create an Amazon API Gateway API and must test JSON Web Token (JWT) authorization on the API.
The developer must use the built-in authorizer and must avoid managing the code with custom logic. The developer needs to define an API route that is available at /auth to test the authorizer configuration.
Which solution will meet these requirements?

A. Create a WebSocket API and the /auth route. Create and configure an AWS Lambda authorizer.
Attach the Lambda authorizer to the API. Deploy the API.
B. Create a WebSocket API and the /auth route. Configure and attach the JWT authorizer to the API. Deploy the API.
C. Create an HTTP API and the /auth route. Configure the JWT authorizer. Attach the JWT authorizer to the /auth route. Deploy the API.
D. Create an HTTP API and the /auth route. Create and configure an AWS Lambda authorizer.
Attach the Lambda authorizer to the /auth route.
Deploy the API.

Answer: C

NEW QUESTION # 623
A developer is preparing containers for deployment on Amazon EKS. The developer must scan all containers for operating system (OS) and programming language vulnerabilities. Any identified vulnerability must be shown as a finding in AWS Security Hub. The developer has an existing Amazon ECR repository. Which solution will meet these requirements?

A. Integrate Amazon Macie with Security Hub. Set up basic scanning for the ECR repository. Push the container images to the repository. Configure a Kubernetes deployment to deploy the containers to Amazon EKS.
B. Integrate Amazon Inspector with Security Hub. Set up enhanced scanning on the ECR repository.Push the container images to the ECR repository.
C. Integrate Amazon GuardDuty with Security Hub. Push the container images to Amazon ECR.
Configure a Kubernetes deployment to deploy the containers to Amazon EKS.
D. Integrate AWS Systems Manager Patch Manager with Security Hub. Push the container images to Amazon ECR. Deploy the containers to Amazon EKS. Run the Amazon CloudWatch agent as a sidecar.

Answer: B

Explanation:
Amazon Inspector provides enhanced scanning of container images in Amazon ECR for OS and programming language vulnerabilities. When integrated with AWS Security Hub, findings from these scans are aggregated and visible as Security Hub findings. This meets the requirement to scan containers and report vulnerabilities centrally.

NEW QUESTION # 624
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