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Amazon DVA-C02 Exam Overview:

Certification Vendor:	Amazon Web Services (AWS)
Exam Name:	AWS Certified Developer – Associate (DVA-C02)
Exam Number:	DVA-C02
Certificate Validity Period:	3 years
Passing Score:	720 (scaled score)
Available Languages:	Portuguese (Brazil), Japanese, Korean, French, German, Simplified Chinese, Traditional Chinese, English, Spanish (Latin America)
Exam Format:	Multiple choice, Multiple response
Real Exam Qty:	65
Exam Duration:	130 minutes
Related Certifications:	AWS Certified Solutions Architect – Associate AWS Certified DevOps Engineer – Professional AWS Certified Cloud Practitioner
Exam Price:	USD 150
Recommended Training:	AWS Skill Builder – Developer Learning Plan AWS Certified Developer – Associate Exam Guide
Exam Registration:	AWS Certification Official Registration Pearson VUE AWS Exams
Sample Questions:	Amazon DVA-C02 Sample Questions
Exam Way:	Online proctored exam via Pearson VUE or in-person at authorized testing centers
Pre Condition:	No mandatory prerequisites. Recommended: 1+ year of hands-on experience developing and maintaining AWS-based applications.
Official Syllabus URL:	https://aws.amazon.com/certification/certified-developer-associate/

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아마존 DVA-C02 자격증 취득은 개발자가 AWS 서비스와 기술에 능숙함을 입증하는 것으로, 해당 기술을 클라우드 컴퓨팅 요구사항으로 사용하는 모든 조직에게 가치 있는 자산이 됩니다. 이 자격증은 또한 클라우드 컴퓨팅 분야에서의 경력 성장과 진행을 위한 새로운 기회를 열어줍니다. 클라우드 기반 솔루션에 대한 수요가 더욱 증가함에 따라, AWS 인증 개발자 - 어소시에이트 자격증을 취득하는 것은 개발자들이 산업에서 경쟁력을 유지하고 관련성을 유지하는 뛰어난 방법입니다.

최신 AWS Certified Associate DVA-C02 무료샘플문제 (Q644-Q649):

질문 # 644
A developer is creating a publicly accessible enterprise website consisting of only static assets.
The developer is hosting the website in Amazon S3 and serving the website to users through an Amazon CloudFront distribution. The users of this application must not be able to access the application content directly from an S3 bucket. All content must be served through the Amazon CloudFront distribution.
Which solution will meet these requirements?

A. Create a new origin access control (OAC) in CloudFront. Configure the CloudFront distribution's origin to use the new OAC. Update the S3 bucket policy to allow CloudFront OAC with read and write access to access Amazon S3 as the origin.
B. Update the CloudFront distribution's origin to send a custom header. Update the S3 bucket policy with a condition by using the aws:RequestTag/tag-key key. Configure the tag-key as the custom header name, and the value being matched is the header's value.
C. Update the S3 bucket's static website settings. Enable static website hosting and specifying index and error documents. Update the CloudFront origin to use the S3 bucket's website endpoint.
D. Update the S3 bucket settings. Enable the block all public access setting in Amazon S3.
Configure the CloudFront distribution's with Amazon S3 as the origin. Update the S3 bucket policy to allow CloudFront write access.

정답：C

질문 # 645
A developer created a Node.js-based AWS Lambda function by using a container image of an AWS OS-only base image. There is a new security patch for Node.js that must be patched to the new Lambda function.
Which solution will meet this requirement?

A. Rebuild the Lambda container code with the latest version of the AWS OS base image. Publish a new version of the Lambda function.
B. Rebuild the Lambda container code with the latest Node.js patch version. Publish a new version of the Lambda function.
C. Set the runtime update mode of the Lambda function to Auto.
D. Patch the runtime version by redeploying the same version of the Lambda function.

정답：B

설명：
Comprehensive Detailed Explanation with all AWS Reference
Why Option D is Correct:
When using a container-based AWS Lambda function, you are responsible for updating the base image for runtime patches. Rebuilding the container with the latest Node.js patch version ensures the function is updated with the required security patches. Publishing a new version of the Lambda function makes the updated image available for use.
Why Other Options are Incorrect:
Option A: The runtime update mode applies to functions using AWS-managed runtimes, not container-based runtimes.
Option B: Redeploying the same version of the Lambda function does not apply the security patch.
Option C: Rebuilding with the AWS OS base image does not guarantee that the latest Node.js patch version is included.
AWS Documentation Reference:
Lambda Function Container Images
Node.js Updates in AWS Lambda

질문 # 646
An application uses an Amazon EC2 Auto Scaling group. A developer notices that EC2 instances are taking a long time to become available during scale-out events. The UserData script is taking a long time to run.
The developer must implement a solution to decrease the time that elapses before an EC2 instance becomes available. The solution must make the most recent version of the application available at all times and must apply all available security updates. The solution also must minimize the number of images that are created.
The images must be validated.
Which combination of steps should the developer take to meet these requirements? (Choose two.)

A. Set up AWS CodeDeploy to deploy the most recent version of the application at runtime.
B. Use EC2 Image Builder to create an Amazon Machine Image (AMI). Install all the patches and agents that are needed to manage and run the application. Update the Auto Scaling group launch configuration to use the AMI.
C. Set up AWS CodePipeline to deploy the most recent version of the application at runtime.
D. Remove any commands that perform operating system patching from the UserData script.
E. Use EC2 Image Builder to create an Amazon Machine Image (AMI). Install the latest version of the application and all the patches and agents that are needed to manage and run the application. Update the Auto Scaling group launch configuration to use the AMI.

정답：D,E

설명：
Explanation
AWS CloudFormation is a service that enables developers to model and provision AWS resources using templates. The developer can use the following steps to avoid accidental database deletion in the future:
Set up AWS CodeDeploy to deploy the most recent version of the application at runtime. This will ensure that the application code is always up to date and does not depend on the AMI.
Remove any commands that perform operating system patching from the UserData script. This will reduce the time that the UserData script takes to run and speed up the instance launch process.
References:
[What Is AWS CloudFormation? - AWS CloudFormation]
[What Is AWS CodeDeploy? - AWS CodeDeploy]
[Running Commands on Your Linux Instance at Launch - Amazon Elastic Compute Cloud]

질문 # 647
A developer is building an application that uses an Amazon RDS for PostgreSQL database. To meet security requirements, the developer needs to ensure that data is encrypted at rest. The developer must be able to rotate the encryption keys on demand.

A. Create a 256-bit AES-GCM encryption key. Store the key in AWS Secrets Manager, and enable managed rotation. Use the key to encrypt the database.
B. Create a 256-bit AES-GCM encryption key. Store the key in AWS Secrets Manager. Configure an AWS Lambda function to perform key rotation. Use the key to encrypt the database.
C. Create a symmetric customer managed AWS KMS key. Use the key to encrypt the database.
D. Use an AWS KMS managed encryption key to encrypt the database.

정답：C

설명：
Comprehensive Detailed Explanation with all AWS References
* Why Option B is Correct:A customer-managed AWS Key Management Service (KMS) key allows for encryption at rest and provides the ability to rotate the key on demand. This ensures compliance with security requirements for key management and database encryption.
* RDS integrates natively with AWS KMS, allowing the use of a customer-managed key for encrypting data at rest.
* Key rotation can be managed directly in AWS KMS without needing custom solutions.
* Why Other Options are Incorrect:
* Option A: AWS KMS managed encryption keys (AWS-owned keys) do not support key rotation on demand.
* Option C & D: Storing keys in AWS Secrets Manager with custom rotation is not a recommended approach for database encryption. AWS KMS is designed specifically for secure key management and encryption.
* AWS Documentation References:
* Encrypting Amazon RDS Resources
* AWS Key Management Service (KMS)

질문 # 648
A gaming company has deployed a web portal on AWS Elastic Beanstalk. The company sometimes needs to deploy new versions three or four times in a day. The company needs to deploy new features for all users as quickly as possible. The solution must minimize performance impact and must maximize availability.
What solution will meet these requirements?

A. Use a-canary deployment strategy to deploy changes to Amazon EC2 instances.
B. Use an immutable deployment policy to deploy to Amazon EC2 instances.
C. Use an all-at-once deployment policy to deploy to Amazon EC2 instances.
D. Use a rolling deployment policy to deploy to Amazon EC2 instances.

정답：A

질문 # 649
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