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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 Price:	150 USD
Passing Score:	720 (scaled score of 100–1,000)
Certificate Validity Period:	3 years
Exam Format:	Multiple response, Multiple choice
Real Exam Qty:	65 (50 scored, 15 unscored)
Available Languages:	Korean, Spanish (Latin America), Japanese, Simplified Chinese, English, Portuguese (Brazil)
Related Certifications:	AWS Certified Cloud Practitioner AWS Certified DevOps Engineer - Professional
Exam Duration:	130 minutes
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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Amazon DVA-C02 exam consists of multiple-choice and multiple-response questions. Candidates will be tested on their knowledge of AWS services such as AWS Lambda, Amazon S3, Amazon DynamoDB, Amazon SQS, Amazon SNS, and AWS Elastic Beanstalk. They will also be tested on their understanding of AWS security, deployment, and monitoring best practices.

The Amazon DVA-C02 exam consists of 65 multiple-choice and multiple-response questions, which must be completed within 130 minutes. To pass the exam, candidates must score a minimum of 720 out of a possible 1000 points. DVA-C02 exam fee is $150 USD, and it can be taken online or at a testing center.

Passing the DVA-C02 Exam requires a score of at least 720 out of 1000. Candidates who pass the exam receive the AWS Certified Developer – Associate certification, which is valid for two years. AWS Certified Developer - Associate certification demonstrates that the candidate has the skills and knowledge to design, develop, and deploy cloud-based applications on AWS. It also shows that the candidate is committed to staying up-to-date with the latest AWS technologies and best practices, making them a valuable asset to any organization that uses AWS services.

Amazon AWS Certified Developer - Associate Sample Questions (Q292-Q297):

NEW QUESTION # 292
A company maintains a REST service using Amazon API Gateway and the API Gateway native API key validation. The company recently launched a new registration page, which allows users to sign up for the service. The registration page creates a new API key using CreateApiKey and sends the new key to the user. When the user attempts to call the API using this key. the user receives a 403 Forbidden error. Existing users are unaffected and can still call the API.
What code updates will grant these new users access to the API?

A. The createDeploymer.t method must be called so the API can be redeployed to include the newly created API key.
B. The createUsagePlanKey method must be called to associate the newly created API key with the correct usage plan.
C. The importApiKeys method must be called to import all newly created API keys into the current stage of the API.
D. The updateAuthorizer method must be called to update the API's authorizer to include the newly created API key

Answer: B

NEW QUESTION # 293
A company has developed an application that uses AWS Lambda functions to process messages from an Amazon SQS queue. One of the Lambda functions makes a call to an external API that is expected to encounter temporary service unavailability.
A developer needs to configure the function to retry failed messages from an Amazon SQS dead-letter queue.
The developer notices that the Lambda function is re-processing some messages in the queue more than once.
Which solution will resolve this issue?

A. Set a message retention period for each message. Configure the Lambda function to add a MessageId to each message.
B. Set the delivery delay parameter at the queue level. Configure the Lambda function to delete processed messages from the queue.
C. Set the visibility timeout parameter at the queue level. Configure the Lambda function to delete processed messages from the queue.
D. Set a receive message wait time for each message. Configure the Lambda function to add a MessageId to each message.

Answer: C

Explanation:
* Why Option B is Correct:Setting the visibility timeout ensures that once a message is being processed, it is temporarily hidden from other consumers. The Lambda function must delete processed messages to avoid re-processing when the visibility timeout expires.
* Why Other Options are Incorrect:
* Option A: Message retention affects how long messages stay in the queue, not how they are processed.
* Option C: Receive message wait time optimizes long polling but does not prevent re-processing.
* Option D: Delivery delay introduces latency for new messages and does not address message re- processing.
* AWS Documentation References:
* Using SQS Visibility Timeout

NEW QUESTION # 294
A company is building a web application on AWS. When a customer sends a request, the application will generate reports and then make the reports available to the customer within one hour. Reports should be accessible to the customer for 8 hours. Some reports are larger than 1 MB. Each report is unique to the customer. The application should delete all reports that are older than 2 days.
Which solution will meet these requirements with the LEAST operational overhead?

A. Generate the reports and then store the reports in an Amazon S3 bucket that uses server-side encryption.
Attach the reports to an Amazon Simple Notification Service (Amazon SNS) message. Subscribe the customer to email notifications from Amazon SNS.
B. Generate the reports and then store the reports as Amazon DynamoDB items that have a specified TTL.
Generate a URL that retrieves the reports from DynamoDB. Provide the URL to customers through the web application.
C. Generate the reports and then store the reports in an Amazon RDS database with a date stamp. Generate an URL that retrieves the reports from the RDS database. Provide the URL to customers through the web application. Schedule an hourly AWS Lambda function to delete database records that have expired date stamps.
D. Generate the reports and then store the reports in an Amazon S3 bucket that uses server-side encryption.
Generate a presigned URL that contains an expiration date Provide the URL to customers through the web application. Add S3 Lifecycle configuration rules to the S3 bucket to delete old reports.

Answer: D

Explanation:
This solution will meet the requirements with the least operational overhead because it uses Amazon S3 as a scalable, secure, and durable storage service for the reports. The presigned URL will allow customers to access their reports for a limited time (8 hours) without requiring additional authentication. The S3 Lifecycle configuration rules will automatically delete the reports that are older than 2 days, reducing storage costs and complying with the data retention policy. Option A is not optimal because it will incur additional costs and complexity to store the reports as DynamoDB items, which have a size limit of 400 KB. Option B is not optimal because it will not provide customers with access to their reports within one hour, as Amazon SNS email delivery is not guaranteed. Option D is not optimal because it will require more operational overhead to manage an RDS database and a Lambda function for storing and deleting the reports.
References: Amazon S3 Presigned URLs, Amazon S3 Lifecycle

NEW QUESTION # 295
A company's website runs on an Amazon EC2 instance and uses Auto Scaling to scale the environment during peak times. Website users across the world ate experiencing high latency flue lo sialic content on theEC2 instance. even during non-peak hours.
When companion of steps mill resolves the latency issue? (Select TWO)

A. Host the application code on AWS lambda
B. Create an Amazon Cloudfront distribution to cache the static content
C. Scale vertically by resizing the EC2 instances
D. Double the Auto Scaling group's maximum number of servers
E. Store the application's sialic content in Amazon S3

Answer: B,E

Explanation:
Explanation
The combination of steps that will resolve the latency issue is to create an Amazon CloudFront distribution to cache the static content and store the application's static content in Amazon S3. This way, the company can use CloudFront to deliver the static content from edge locations that are closer to the website users, reducing latency and improving performance. The company can also use S3 to store the static content reliably and cost-effectively, and integrate it with CloudFront easily. The other options either do not address the latency issue, or are not necessary or feasible for the given scenario.

NEW QUESTION # 296
A developer is building an application that will use an Amazon API Gateway API with an AWS Lambda backend. The team that will develop the frontend requires immediate access to the API endpoints to build the UI. To prepare the backend application for integration, the developer needs to set up endpoints. The endpoints need to return predefined HTTP status codes and JSON responses for the frontend team. The developer creates a method for an API resource.
Which solution will meet these requirements?

A. Set the integration type to AWS_PROXY. Provision Lambda functions to return hardcoded JSON data.
B. Set the integration type to MOCK. Configure the method's integration request and integration response to associate a JSON responses with specific HTTP status codes.
C. Set the integration type to MOCK. Use a method request to define HTTP status codes. Use an integration request to define JSON responses.
D. Set the integration type to HTTP_PROXY. Configure API Gateway to pass all requests to an external placeholder API. which the team will build.

Answer: B

Explanation:
Setting the integration type to MOCK allows you to create mock responses without having a backend implementation.
With this approach, you can easily provide predefined JSON responses for specific HTTP status codes, allowing the frontend team to work on UI development with realistic data.
Configuring the method's integration request and integration response in API Gateway allows you to define the expected request and response formats, including associating JSON responses with specific HTTP status codes.

NEW QUESTION # 297
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