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Amazon DVA-C02 Exam Syllabus Topics:

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

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Amazon AWS Certified Developer - Associate Sample Questions (Q256-Q261):

NEW QUESTION # 256
A developer is creating an application that will give users the ability to store photos from their cellphones in the cloud. The application needs to support tens of thousands of users. The application uses an Amazon API Gateway REST API that is integrated with AWS Lambda functions to process the photos. The application stores details about the photos in Amazon DynamoDB.
Users need to create an account to access the application. In the application, users must be able to upload photos and retrieve previously uploaded photos. The photos will range in size from 300 KB to 5 MB.
Which solution will meet these requirements with the LEAST operational overhead?

Answer: D

Explanation:
Explanation
Amazon Cognito user pools is a service that provides a secure user directory that scales to hundreds of millions of users. The developer can use Amazon Cognito user pools to manage user accounts and create an Amazon Cognito user pool authorizer in API Gateway to control access to the API. The developer can use the Lambda function to store the photos in Amazon S3, which is a highly scalable, durable, and secure object storage service. The developer can store the object's S3 key as part of the photo details in the DynamoDB table, which is a fast and flexible NoSQL database service. The developer can retrieve previously uploaded photos by querying DynamoDB for the S3 key and fetching the photos from S3. This solution will meet the requirements with the least operational overhead.
References:
[Amazon Cognito User Pools]
[Use Amazon Cognito User Pools - Amazon API Gateway]
[Amazon Simple Storage Service (S3)]
[Amazon DynamoDB]


NEW QUESTION # 257
A developer must use multi-factor authentication (MFA) to access data in an Amazon S3 bucket that is in another AWS account. Which AWS Security Token Service (AWS STS) API operation should the developer use with the MFA information to meet this requirement?

Answer: C

Explanation:
Explanation
The AssumeRole API operation returns a set of temporary security credentials that can be used to access resources in another AWS account. The developer can specify the MFA device serial number and the MFA token code in the request parameters. This option enables the developer to use MFA to access data in an S3 bucket that is in another AWS account. The other options are not relevant or effective for this scenario. References
* AssumeRole
* Requesting Temporary Security Credentials


NEW QUESTION # 258
A developer is storing many objects in a single Amazon S3 bucket. The developer needs to optimize the S3 bucket for high request rates.
How should the developer store the objects to meet this requirement?

Answer: C

Explanation:
https://docs.aws.amazon.com/AmazonS3/latest/userguide/optimizing-performance.html


NEW QUESTION # 259
A developer is integrating Amazon ElastiCache in an application. The cache will store data from a database.
The cached data must populate real-time dashboards. Which caching strategy will meet these requirements?

Answer: A


NEW QUESTION # 260
A company has an application that uses an AWS Lambda function to process data. A developer must implement encryption in transit for all sensitive configuration data, such as API keys, that is stored in the application. The developer creates an AWS Key Management Service (AWS KMS) customer managed key.
What should the developer do next to meet the encryption requirement?

Answer: D


NEW QUESTION # 261
......

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