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Amazon DVA-C02 Exam Syllabus Topics:

Section	Weight	Objectives
Deployment	24%	- Prepare application artifacts for deployment 1. Package code and dependencies 2. Use infrastructure as code (AWS CloudFormation, AWS SAM) - Implement CI/CD pipelines 1. Automate deployment and testing workflows 2. Use AWS CodePipeline, CodeBuild, CodeDeploy - Deploy applications on AWS 1. Perform safe updates and rollbacks 2. Deploy to AWS Lambda, Amazon EC2, Elastic Beanstalk
Security	26%	- Secure application data 1. Implement encryption at rest and in transit 2. Manage secrets and credentials securely - 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
Development with AWS Services	32%	- Write code for applications hosted on AWS 1. Use AWS SDKs and APIs 2. Develop serverless applications 3. Implement architectural patterns - Integrate AWS services into applications 1. Implement messaging and event-driven workflows 2. Use AWS Lambda, API Gateway, Amazon EventBridge - Interact with AWS data services 1. Work with Amazon DynamoDB, Amazon S3 2. Implement caching and data storage strategies
Troubleshooting and Optimization	18%	- Debug and resolve errors 1. Identify and fix code defects 2. Resolve integration and configuration problems - Troubleshoot application issues 1. Use Amazon CloudWatch, AWS X-Ray for monitoring 2. Analyze logs, metrics, and traces - Optimize application performance 1. Optimize resource usage and costs 2. Improve latency and throughput

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Amazon AWS Certified Developer - Associate Sample Questions (Q748-Q753):

NEW QUESTION # 748
A company is concerned that a malicious user could deploy unauthorized changes to the code for an AWS Lambda function. What can a developer do to ensure that only trusted code is deployed to Lambda?

A. Set the KmsKeyArn property of the Lambda function to the Amazon Resource Name (ARN) of a trusted key before deploying the package to Lambda.
B. Turn on the trusted code option in AWS CodeDeploy. Add the CodeDeploy digital certificate to the Lambda package before deploying the package to Lambda.
C. Define the code signing configuration in the Lambda console. Use AWS Signer to digitally sign the Lambda package before deploying the package to Lambda.
D. Link Lambda to AWS KMS in the Lambda console. Use AWS KMS to digitally sign the Lambda package before deploying the package to Lambda.

Answer: C

NEW QUESTION # 749
A developer is using AWS Amplify Hosting to build and deploy an application. The developer is receiving an increased number of bug reports from users. The developer wants to add end-to-end testing to the application to eliminate as many bugs as possible before the bugs reach production.
Which solution should the developer implement to meet these requirements?

A. Create unit tests in the application. Deploy the unit tests by using the amplify push command in the Amplify CLI.
B. Add a test phase to the amplify.yml build settings for the application.
C. Run the amplify add test command in the Amplify CLI.
D. Add a test phase to the aws-exports.js file for the application.

Answer: B

NEW QUESTION # 750
A developer is managing an application that uploads user files to an Amazon S3 bucket named companybucket. The company wants to maintain copies of all the files uploaded by users for compliance purposes, while ensuring users still have access to the data through the application.
Which IAM permissions should be applied to users to ensure they can create but not remove files from the bucket?

A. {"Version": "2012-10-17","Statement": [{"Sid": "statement1","Effect": "Allow","Action": ["s3:
CreateBucket", "s3:GetBucketLocation"],"Resource": "arn:aws:s3:::companybucket"}]}
B. {"Version": "2012-10-17","Statement": [{"Sid": "statement1","Effect": "Allow","Action": ["s3:
GetObject", "s3:PutObject"],"Resource": ["arn:aws:s3:::companybucket"]}]}
C. {"Version": "2012-10-17","Statement": [{"Sid": "statement1","Effect": "Allow","Action": ["s3:
GetObject", "s3:PutObject", "s3:DeleteObject", "s3:PutObjectRetention"],"Resource": "arn:aws:s3:::
companybucket"}]}
D. {"Version": "2012-10-17","Statement": [{"Sid": "statement1","Effect": "Allow","Action": ["s3:
GetObject", "s3:PutObject", "s3:DeleteObject"],"Resource": ["arn:aws:s3:::companybucket"]}]}

Answer: B

Explanation:
To meet the requirement:
* Users must be able to upload (PutObject) and read (GetObject) files but not delete them.
* Option D ensures users cannot delete files by omitting the s3:DeleteObject action while allowing s3:
GetObject and s3:PutObject.
* Option A: Includes s3:DeleteObject, which allows users to delete files and does not meet the requirement.
* Option B: Contains unrelated actions like CreateBucket, which is not relevant here.
* Option C: Adds s3:PutObjectRetention, which is unnecessary and does not restrict DeleteObject.
Reference:AWS S3 Permissions Documentation

NEW QUESTION # 751
A company is using AWS CloudFormation 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 Systems Manager Parameter Store resource with the SecureString data type to generate and rotate the password.
C. Use an AWS Lambda function as a CloudFormation custom resource 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:
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 # 752
A developer is building a highly secure healthcare application using serverless components. This application requires writing temporary data to /tmp storage on an AWS Lambda function.
How should the developer encrypt this data?

A. Set up the Lambda function with a role and key policy to access an AWS KMS key. Use the key to generate a data key used to encrypt all data prior to writing to /tmp storage.
B. Use OpenSSL to generate a symmetric encryption key on Lambda startup. Use this key to encrypt the data prior to writing to /tmp.
C. Use an on-premises hardware security module (HSM) to generate keys, where the Lambda function requests a data key from the HSM and uses that to encrypt data on all requests to the function.
D. Enable Amazon EBS volume encryption with an AWS KMS key in the Lambda function configuration so that all storage attached to the Lambda function is encrypted.

Answer: A

NEW QUESTION # 753
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