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Amazon DVA-C02 Exam Syllabus Topics:

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

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Amazon AWS Certified Developer - Associate Sample Questions (Q686-Q691):

NEW QUESTION # 686
A team has an Amazon API Gateway REST API that consists of a single resource and a GET method that is backed by an AWS Lambda integration.
A developer makes a change to the Lambda function and deploys the function as a new version.
The developer needs to set up a process to test the new version of the function before using the new version in production. The tests must not affect the production REST API.
Which solution will meet these requirements with the LEAST operational overhead?

Answer: B


NEW QUESTION # 687
An organization is using Amazon CloudFront to ensure that its users experience low-latency access to its web application. The organization has identified a need to encrypt all traffic between users and CloudFront, and all traffic between CloudFront and the web application.
How can these requirements be met? (Select TWO)

Answer: B,C

Explanation:
This solution will meet the requirements by ensuring that all traffic between users and CloudFront, and all traffic between CloudFront and the web application, are encrypted using HTTPS protocol. The Origin Protocol Policy determines how CloudFront communicates with the origin server (the web application), and setting it to "HTTPS Only" will force CloudFront to use HTTPS for every request to the origin server. The Viewer Protocol Policy determines how CloudFront responds to HTTP or HTTPS requests from users, and setting it to "HTTPS Only" or "Redirect HTTP to HTTPS" will force CloudFront to use HTTPS for every response to users. Option A is not optimal because it will use AWS KMS to encrypt traffic between CloudFront and the web application, which is not necessary or supported by CloudFront. Option C is not optimal because it will set the origin's HTTP port to 443, which is incorrect as port 443 is used for HTTPS protocol, not HTTP protocol. Option E is not optimal because it will enable the CloudFront option Restrict Viewer Access, which is used for controlling access to private content using signed URLs or signed cookies, not for encrypting traffic.


NEW QUESTION # 688
A developer maintains a serverless application that uses an Amazon API Gateway REST API to invoke an AWS Lambda function by using a non-proxy integration. The Lambda function returns data, which is stored in Amazon DynamoDB.
Several application users begin to receive intermittent errors from the API. The developer examines Amazon CloudWatch Logs for the Lambda function and discovers several ProvisionedThroughputExceededException errors.
The developer needs to resolve the errors and ensure that the errors do not reoccur.

Answer: D

Explanation:
Comprehensive and Detailed Step-by-Step
Option A: Provisioned Capacity with Exponential Backoff:
Using provisioned capacity ensures sufficient throughput for the DynamoDB table.
Configuring the Lambda function to implement exponential backoff retries reduces the chance of exceeding capacity during peak usage.
This combination addresses the root cause (ProvisionedThroughputExceededException) and prevents errors without overprovisioning.
Why Other Options Are Incorrect:
Option B: Using SQS adds unnecessary latency and complexity. The issue lies in DynamoDB throughput, not request management.
Option C: A usage plan for the API does not address throughput issues in DynamoDB.
Option D: Invoking the Lambda function asynchronously does not resolve the DynamoDB capacity issue and might lead to delayed processing.
Reference:
DynamoDB Provisioned Throughput Documentation


NEW QUESTION # 689
A new application must run a security service in an isolated virtual machine (VM). The application must be physically close to the VM to reduce data transmission latency. Also, the application and the security service must be placed on the same compute resource to streamline the deployment.
Which compute host will provide the LOWEST latency between the application and the VM?

Answer: C

Explanation:
An Amazon EC2 instance with AWS Nitro Enclaves provides a secure, isolated VM (enclave) that runs on the same physical host as the parent EC2 instance. This setup ensures the lowest possible latency between the application and the security service due to shared compute resources and local communication via vsock.


NEW QUESTION # 690
A developer is creating an application that must be able to generate API responses without backend integrations. Multiple internal teams need to work with the API while the application is still in development.
Which solution will meet these requirements with the LEAST operational overhead?

Answer: D

Explanation:
The API needs to:
Generate responses without backend integrations: This indicates the use of mock responses for testing.
Be used by multiple internal teams during development.
Minimize operational overhead.
REST APIs: Fully managed API Gateway option that supports advanced capabilities like mock integrations, request/response transformation, and more.
HTTP APIs: Lightweight option for building APIs quickly. It supports fewer features but has lower operational complexity and cost.
Mock Integration: Allows API Gateway to return pre-defined responses without requiring backend integration.


NEW QUESTION # 691
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