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Amazon DVA-C02 Exam Overview:

Certification Vendor:	Amazon Web Services (AWS)
Exam Name:	AWS Certified Developer - Associate
Exam Number:	DVA-C02
Exam Duration:	130 minutes
Passing Score:	720 (scaled score of 100–1,000)
Exam Format:	Multiple choice, Multiple response
Certificate Validity Period:	3 years
Exam Price:	150 USD
Related Certifications:	AWS Certified Cloud Practitioner AWS Certified DevOps Engineer - Professional
Real Exam Qty:	65 (50 scored, 15 unscored)
Available Languages:	Simplified Chinese, Japanese, Korean, Portuguese (Brazil), English, Spanish (Latin America)
Sample Questions:	Amazon DVA-C02 Sample Questions
Exam Way:	Pearson VUE testing center or online proctored exam
Pre Condition:	Recommended 1 or more years of hands-on experience in developing and maintaining applications using AWS services. Proficiency in at least one high-level programming language.
Official Syllabus URL:	https://aws.amazon.com/certification/certified-developer-associate/

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Preparing for the DVA-C02 certification exam requires a deep understanding of AWS services and best practices. AWS offers a variety of resources to help candidates prepare for the exam, including training courses, practice exams, and study guides. Additionally, there are many third-party resources available, such as online courses and study groups, that can help candidates prepare for the exam.

Amazon DVA-C02 Certification Exam is a multiple-choice exam that consists of 65 questions. Candidates are given 130 minutes to complete the exam. DVA-C02 exam is available in multiple languages, including English, Japanese, Korean, and Simplified Chinese. DVA-C02 exam fee is $150, and candidates can take the exam at a testing center or online.

Amazon AWS Certified Developer - Associate Sample Questions (Q694-Q699):

NEW QUESTION # 694
A developer is building a containerized application on AWS. The application communicates with a third-party service by using API keys. The developer needs a secure way to store the API keys and pass the API keys to the containerized application.
Which solutions will meet these requirements? (Choose two.)

A. Store the API keys as a SecretString parameter in AWS Secrets Manager. Grant the application access to retrieve the value from Secrets Manager.
B. Embed the API keys in the application. Build the container image on-premises. Upload the container image to Amazon Elastic Container Registry (Amazon ECR).
C. Add a new AWS CloudFormation parameter to the CloudFormation template. Pass the API keys to the application by using the container definition environment variables.
D. Store the API keys in AWS CloudFormation templates by using base64 encoding. Pass the API keys to the application through container definition environment variables.
E. Store the API keys as a SecureString parameter in AWS Systems Manager Parameter Store.
Grant the application access to retrieve the value from Parameter Store.

Answer: A,E

NEW QUESTION # 695
An ecommerce application is running behind an Application Load Balancer. A developer observes some unexpected load on the application during non-peak hours. The developer wants to analyze patterns for the client IP addresses that use the application.
Which HTTP header should the developer use for this analysis?

A. The X-Forwarded-Host header
B. The X-Forwarded-Proto header
C. The X-Forwarded-For header
D. The X-Forwarded-Port header

Answer: C

Explanation:
The X-Forwarded-For HTTP header contains the IP address of the original client that made the request. The developer can use this header to analyze patterns for the IP addresses of clients using the application.

NEW QUESTION # 696
An engineer created an A/B test of a new feature on an Amazon CloudWatch Evidently project.
The engineer configured two variations of the feature (Variation A and Variation B) for the test.
The engineer wants to work exclusively with Variation A.
The engineer needs to make updates so that Variation A is the only variation that appears when the engineer hits the application's endpoint.
Which solution will meet this requirement?

A. Add an experiment to the project. Set the identifier of the experiment to Variation B. Set the variation to 0%.
B. Add an override to the feature. Set the identifier of the override to the engineer's user ID. Set the variation to Variation A.
C. Add an override to the feature. Set the identifier of the override to Variation A. Set the variation to 100%.
D. Add an experiment to the project. Set the identifier of the experiment to the AWS account's account ISet the variation to Variation A.

Answer: B

Explanation:
Overrides let you pre-define the variation for selected users. to always receive the editable variation.
https://aws.amazon.com/blogs/aws/cloudwatch-evidently/

NEW QUESTION # 697
A developer is using an AWS Lambda function to generate avatars for profile pictures that are uploaded to an Amazon S3 bucket. The Lambda function is automatically invoked for profile pictures that are saved under the /original/ S3 prefix. The developer notices that some pictures cause the Lambda function to time out. The developer wants to implement a fallback mechanism by using another Lambda function that resizes the profile picture.
Which solution will meet these requirements with the LEAST development effort?

A. Set the image resize Lambda function as a destination of the avatar generator Lambda function for the events that fail processing.
B. Create an Amazon Simple Queue Service (Amazon SQS) queue. Set the SQS queue as a destination with an on failure condition for the avatar generator Lambda function. Configure the image resize Lambda function to poll from the SQS queue.
C. Create an AWS Step Functions state machine that invokes the avatar generator Lambda function and uses the image resize Lambda function as a fallback. Create an Amazon EventBridge rule that matches events from the S3 bucket to invoke the state machine.
D. Create an Amazon Simple Notification Service (Amazon SNS) topic. Set the SNS topic as a destination with an on failure condition for the avatar generator Lambda function. Subscribe the image resize Lambda function to the SNS topic.

Answer: C

NEW QUESTION # 698
A developer is building a web and mobile application for two types of users: regular users and guest users.
Regular users are required to log in, but guest users do not log in. Users should see only their data, regardless of whether they authenticate. Users need AWS credentials before they can access AWS resources.

A. Generate temporary keys that are stored in AWS KMS. Use the temporary keys to access the required resources.
B. Generate temporary credentials. Store the temporary credentials in AWS Secrets Manager. Use the temporary credentials to access the required resources.
C. Use an Amazon Cognito identity pool to generate temporary AWS credentials that are linked to an unauthenticated role that has access to the required resources.
D. Set up an IAM user that has permissions to the required resources. Hardcode the IAM credentials in the web and mobile application.

Answer: C

Explanation:
Comprehensive and Detailed Step-by-Step Explanation:
* Option A: Amazon Cognito Identity Pool with Unauthenticated Role
* Cognito identity pools can generate temporary AWS credentials for both authenticated and unauthenticated users.
* For guest users, Cognito assigns an unauthenticated role with limited permissions, ensuring secure access to only their resources.
* This is the most secure and efficient solution for managing AWS credentials dynamically without hardcoding or storing them.
* Why Other Options Are Incorrect:
* Option B: Hardcoding IAM credentials in the application is insecure and violates best practices.
* Option C and D: Temporary keys stored in KMS or Secrets Manager require additional implementation overhead and do not inherently manage user-specific access.
References:
Amazon Cognito Identity Pools

NEW QUESTION # 699
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