AWS Certified Developer - Associate practice dumps & DVA-C02 exam dumps

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Amazon DVA-C02 Exam Syllabus Topics:

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

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Amazon AWS Certified Developer - Associate Sample Questions (Q490-Q495):

NEW QUESTION # 490
A developer is creating a role to access Amazon S3 buckets. To create the role, the developer uses the AWS CLI create-role command. Which policy should be added to allow the Amazon EC2 service to assume the role?

A. Trust policy
B. Service control policy (SCP)
C. Managed policy
D. Inline policy

Answer: A

Explanation:
A trust policy defines which entities (such as AWS services like EC2) are allowed to assume a role. To allow the EC2 service to assume the role, the developer must add a trust policy specifying EC2 as a trusted principal.

NEW QUESTION # 491
A company is using AWS CioudFormation to deploy a two-tier application. The application will use Amazon RDS as its backend database. The company wants a solution that will randomly generate the database password during deployment. The solution also must automatically rotate the database password without requiring changes to the application.
What is the MOST operationally efficient solution that meets these requirements'?

A. Use an AWS Secrets Manager resource to generate and rotate the password.
B. Use an AWS Lambda function as a CloudFormation custom resource to generate and rotate the password.
C. Use an AWS Systems Manager Parameter Store resource with the SecureString data type to generate and rotate the password.
D. Use a cron daemon on the application s host to generate and rotate the password.

Answer: A

Explanation:
Explanation
This solution will meet the requirements by using AWS Secrets Manager, which is a service that helps protect secrets such as database credentials by encrypting them with AWS Key Management Service (AWS KMS) and enabling automatic rotation of secrets. The developer can use an AWS Secrets Manager resource in AWS CloudFormation template, which enables creating and managing secrets as part of a CloudFormation stack. The developer can use an AWS::SecretsManager::Secret resource type to generate and rotate the password for accessing RDS database during deployment. The developer can also specify a RotationSchedule property for the secret resource, which defines how often to rotate the secret and which Lambda function to use for rotation logic. Option A is not optimal because it will use an AWS Lambda function as a CloudFormation custom resource, which may introduce additional complexity and overhead for creating and managing a custom resource and implementing rotation logic. Option B is not optimal because it will use an AWS Systems Manager Parameter Store resource with the SecureString data type, which does not support automatic rotation of secrets. Option C is not optimal because it will use a cron daemon on the application's host to generate and rotate the password, which may incur more costs and require more maintenance for running and securing a host.
References: [AWS Secrets Manager], [AWS::SecretsManager::Secret]

NEW QUESTION # 492
A developer is creating an AWS Lambda function that will connect to an Amazon RDS for MySQL instance.
The developer wants to store the database credentials. The database credentials need to be encrypted and the database password needs to be automatically rotated.
Which solution will meet these requirements?

A. Store the database credentials as environment variables for the Lambda function. Set the environment variables to rotate automatically.
B. Store the database credentials in the X-Amz-Security-Token parameter. Set up managed rotation on the parameter.
C. Store the database credentials in AWS Secrets Manager. Set up managed rotation on the database credentials.
D. Store the database credentials in AWS Systems Manager Parameter Store as secure string parameters.
Set up managed rotation on the parameters.

Answer: C

NEW QUESTION # 493
A company needs a new REST API that can return information about the contents of an Amazon S3 bucket, such as a count of the objects stored in it. The company has decided that the new API should be written as a microservice using AWS Lambda and Amazon API Gateway. How should the developer ensure that the microservice has the necessary access to the Amazon S3 bucket, while adhering to security best practices?

A. Create an IAM user that has permissions to access the Amazon S3 bucket, and store the IAM user credentials in the Lambda function source code.
B. Create an IAM role that has permissions to access the Amazon S3 bucket and assign it to the Lambda function as its execution role.
C. Create an Amazon S3 bucket policy that specifies the Lambda service as its principal and assign it to the Amazon S3 bucket.
D. Create an IAM role, attach the AmazonS3FullAccess managed policy to it, and assign the role to the Lambda function as its execution role.

Answer: B

Explanation:
A Lambda function should access AWS services through an IAM execution role with only the permissions required for the task. Granting the role access to the specific S3 bucket allows the microservice to read bucket contents securely without hardcoded credentials or overly broad permissions.

NEW QUESTION # 494
A company is developing an application that will be accessed through the Amazon API Gateway REST API.
Registered users should be the only ones who can access certain resources of this API. The token being used should expire automatically and needs to be refreshed periodically.
How can a developer meet these requirements?

A. Create an Amazon Cognito identity pool, configure the Amazon Cognito Authorizer in API Gateway, and use the temporary credentials generated by the identity pool.
B. Create an Amazon Cognito user pool, configure the Cognito Authorizer in API Gateway, and use the identity or access token.
C. Create an 1AM user for each API user, attach an invoke permissions policy to the API. and use an I AM authorizer in API Gateway.
D. Create and maintain a database record for each user with a corresponding token and use an AWS Lambda authorizer in API Gateway.

Answer: B

NEW QUESTION # 495
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