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The DVA-C02 Certification Exam consists of 65 multiple-choice and multiple-response questions that are to be completed in 130 minutes. DVA-C02 exam covers a range of topics, including AWS core services, database technologies, security and compliance, and deployment and monitoring. Candidates who pass the DVA-C02 exam demonstrate their ability to develop, deploy, and maintain applications using AWS services in a cost-effective, scalable, and reliable manner. AWS Certified Developer - Associate certification is suitable for developers, DevOps engineers, and solutions architects who want to advance their careers in cloud computing and demonstrate their expertise in AWS.

The AWS Certified Developer - Associate certification exam covers a wide range of topics, including AWS core services, security, databases, and deployment and management. Candidates are required to have a strong understanding of programming languages such as Python, Java, and Ruby, as well as experience with AWS services such as EC2, S3, and Lambda.

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Amazon AWS Certified Developer - Associate Sample Questions (Q261-Q266):

NEW QUESTION # 261
A company's developer has deployed an application in AWS by using AWS CloudFormation. The CloudFormation stack includes parameters in AWS Systems Manager Parameter Store that the application uses as configuration settings. The application can modify the parameter values.
When the developer updated the stack to create additional resources with tags, the developer noted that the parameter values were reset and that the values ignored the latest changes made by the application. The developer needs to change the way the company deploys the CloudFormation stack. The developer also needs to avoid resetting the parameter values outside the stack.
Which solution will meet these requirements with the LEAST development effort?

A. Modify the CloudFormation stack policy to deny updates on Parameter Store parameters.
B. Modify the CloudFormation stack to set the deletion policy to Retain for the Parameter Store parameters.
C. Create an Amazon DynamoDB table as a resource in the CloudFormation stack to hold configuration data for the application. Migrate the parameters that the application is modifying from Parameter Store to the DynamoDB table.
D. Create an Amazon RDS DB instance as a resource in the CloudFormation stack. Create a table in the database for parameter configuration. Migrate the parameters that the application is modifying from Parameter Store to the configuration table.

Answer: B

NEW QUESTION # 262
A developer supports an application that accesses data in an Amazon DynamoDB table. One of the item attributes is expirationDate in the timestamp format. The application uses this attribute to find items, archive them, and remove them from the table based on the timestamp value The application will be decommissioned soon, and the developer must find another way to implement this functionality. The developer needs a solution that will require the least amount of code to write.
Which solution will meet these requirements?

A. Enable TTL on the expirationDate attribute in the table. Create a DynamoDB stream. Create an AWS Lambda function to process the deleted items. Create a DynamoDB trigger for the Lambda function.
B. Create two AWS Lambda functions, one to delete the items and one to process the items. Create an Amazon EventBndge scheduled rule to invoke the Lambda Functions Use the Deleteltem API operation to delete the items based on the expirationDate attribute. Use the GetRecords API operation to get the items from the DynamoDB table and process them.
C. Enable TTL on the expirationDate attribute in the table Specify an Amazon Simple Queue Service (Amazon SQS> dead-letter queue as the target to delete the items Create an AWS Lambda function to process the items
D. Create two AWS Lambda functions one to delete the items and one to process the items Create a DynamoDB stream Use the Deleteltem API operation to delete the items based on the expirationDate attribute Use the GetRecords API operation to get the items from the DynamoDB stream and process them

Answer: A

Explanation:
* TTL for Automatic Deletion: DynamoDB's Time-to-Live effortlessly deletes expired items without manual intervention.
* DynamoDB Stream: Captures changes to the table, including deletions of expired items, triggering downstream actions.
* Lambda for Processing: A Lambda function connected to the stream provides custom logic for handling the deleted items.
* Code Efficiency: This solution leverages native DynamoDB features and stream-based processing, minimizing the need for custom code.
References:
* DynamoDB TTL Documentation: https://docs.aws.amazon.com/amazondynamodb/latest
/developerguide/TTL.html
* DynamoDB Streams Documentation: https://docs.aws.amazon.com/amazondynamodb/latest
/developerguide/Streams.html

NEW QUESTION # 263
A developer creates an AWS Lambda function that is written in Jav
a. During testing, the Lambda function does not work how the developer expected. The developer wants to use tracing capabilities to troubleshoot the problem.
Which AWS service should the developer use to accomplish this goal?

A. AWS CloudTrail
B. AWS Trusted Advisor
C. Amazon CloudWatch
D. AWS X-Ray

Answer: D

NEW QUESTION # 264
A company is building a serverless application. The application uses an API key to authenticate with a third-party application. The company wants to store the external API key as a part of an AWS Lambda configuration. The company needs to have full control over the AWS Key Management Service (AWS KMS) keys that will encrypt the API key and should be visible only to authorized entities.
Which solution will meet these requirements?

A. Store the API key as an Amazon DynamoDB table record. Use an AWS managed key to encrypt the API key.
B. Store the API key in AWS Systems Manager Parameter Store as a string parameter. Use the default AWS KMS key that AWS provides to encrypt the API key.
C. Store the API key in AWS Lambda environment variables. Create an AWS KMS customer managed key to encrypt the API key.
D. Store the API key in the code repository. Use an AWS managed key to encrypt the code repository.

Answer: C

Explanation:
https://docs.aws.amazon.com/lambda/latest/dg/configuration-envvars.html#configuration- envvars-encryption:~:text=If%20you%20prefer,on%20the%20function

NEW QUESTION # 265
A developer is creating an application that must be able to generate API responses without backend integrations. Multiple internal teams need to work with the API while the application is still in development.
Which solution will meet these requirements with theLEAST operational overhead?

A. Create an Amazon API Gateway HTTP API. Provision a VPC link, and set up a private integration on the API to connect to a VPC.
B. Create an Amazon API Gateway REST API. Enable mock integration on the method of the API resource.
C. Create an Amazon API Gateway HTTP API. Enable mock integration on the method of the API resource.
D. Create an Amazon API Gateway REST API. Set up a proxy resource that has the HTTP proxy integration type.

Answer: B

Explanation:
Comprehensive Detailed and Lengthy Step-by-Step Explanation with All AWS Developer References:
1. Understanding the Use Case:
The API needs to:
* Generate responses without backend integrations:This indicates the use of mock responses for testing.
* Be used by multiple internal teams during development.
* Minimize operational overhead.
2. Key Features of Amazon API Gateway:
* REST APIs:Fully managed API Gateway option that supports advanced capabilities like mock integrations, request/response transformation, and more.
* HTTP APIs:Lightweight option for building APIs quickly. It supports fewer features but has lower operational complexity and cost.
* Mock Integration:Allows API Gateway to return pre-defined responses without requiring backend integration.
3. Explanation of the Options:
* Option A:"Create an Amazon API Gateway REST API. Set up a proxy resource that has the HTTP proxy integration type."A proxy integration requires a backend service for handling requests. This does not meet the requirement of "no backend integrations."
* Option B:"Create an Amazon API Gateway HTTP API. Provision a VPC link, and set up a private integration on the API to connect to a VPC."This requires setting up a VPC and provisioning resources, which increases operational overhead and is unnecessary for this use case.
* Option C:"Create an Amazon API Gateway HTTP API. Enable mock integration on the method of the APIresource."While HTTP APIs can enable mock integrations, they have limited support for advanced features compared to REST APIs, such as detailed request/response customization. REST APIs are better suited for development environments requiring mock responses.
* Option D:"Create an Amazon API Gateway REST API. Enable mock integration on the method of the API resource."This is the correct answer. REST APIs with mock integration allow defining pre- configured responses directly within API Gateway, making them ideal for scenarios where backend services are unavailable. It provides flexibility for testing while minimizing operational overhead.
4. Implementation Steps:
To enable mock integration with REST API:
* Create a REST API in API Gateway:
* Open theAPI Gateway Console.
* ChooseCreate API>REST API.
* Define the API Resource and Methods:
* Add a resource and method (e.g., GET or POST).
* Set Up Mock Integration:
* Select the method, and in theIntegration Type, chooseMock Integration.
* Configure the Mock Response:
* Define a200 OK responsewith the desired response body and headers.
* Deploy the API:
* Deploy the API to a stage (e.g., dev) to make it accessible.
5. Why REST API Over HTTP API?
* REST APIs support detailed request/response transformations and robust mock integration features, which are ideal for development and testing scenarios.
* While HTTP APIs offer lower cost and simplicity, they lack some advanced features required for fine- tuned mock integrations.

NEW QUESTION # 266
......

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