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Amazon AWS Certified Developer - Associate DVA-C02 Exam

Attempt the Amazon Associate practice test and solve real exam-like DVA-C02 questions to prepare efficiently and increase your chances of success. Our Amazon DVA-C02 practice questions match the actual AWS Certified Developer - Associate exam format, helping you enhance confidence and improve performance. With our DVA-C02 practice exam software, you can analyze your performance, identify weak areas, and work on them effectively to boost your final Amazon Associate exam score.

Vendor:	Amazon
Exam Name:	AWS Certified Developer - Associate
Registration Code:	DVA-C02
Related Certification:	Amazon Associate, Amazon AWS Certified Developer Associate Certifications
Exam Audience:	AWS Developers,

Total Questions

600

Last Updated

29-08-2026

Exam Duration

130 MINUTES

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Question: 1

A developer is building an application that gives users the ability to view bank account from multiple sources in a single dashboard. The developer has automated the process to retrieve API credentials for these sources. The process invokes an AWS Lambda function that is associated with an AWS CloudFormation cotton resource.

The developer wants a solution that will store the API credentials with minimal operational overhead.

When solution will meet these requirements?

AAdd an AWS Secrets Manager GenerateSecretString resource to the CloudFormation template. Set the value to reference new credentials to the Cloudformation resource.

BUse the AWS SDK ssm PutParameter operation in the Lambda function from the existing, custom resource to store the credentials as a parameter. Set the parameter value to reference the new credentials. Set ma parameter type to SecureString.

CAdd an AWS Systems Manager Parameter Store resource to the CloudFormation template. Set the CloudFormation resource value to reference the new credentials Set the resource NoEcho attribute to true.

DUse the AWS SDK ssm PutParameter operation in the Lambda function from the existing custom resources to store the credentials as a parameter. Set the parameter value to reference the new credentials. Set the parameter NoEcho attribute to true.

Answer: B

Explanation:

The solution that will meet the requirements is to use the AWS SDK ssm PutParameter operation in the Lambda function from the existing custom resource to store the credentials as a parameter. Set the parameter value to reference the new credentials. Set the parameter type to SecureString. This way, the developer can store the API credentials with minimal operational overhead, as AWS Systems Manager Parameter Store provides secure and scalable storage for configuration data. The SecureString parameter type encrypts the parameter value with AWS Key Management Service (AWS KMS). The other options either involve adding additional resources to the CloudFormation template, which increases complexity and cost, or do not encrypt the parameter value, which reduces security.

Question: 2

An application writes transactions to an Amazon DynamoDB table by using the PutItem operation. Each transaction has a unique transactionId. Sometimes duplicate transactions are received. The developer wants to ensure that a duplicate PutItem does not overwrite an existing item. Duplicate transactions are rare.

What is the MOST cost-effective solution?

ACall GetItem before calling PutItem.

BEnable TTL on the table.

CUse a conditional put with attribute_exists(transactionId).

DUse a conditional put with attribute_not_exists(transactionId).

Answer: D

Explanation:

Amazon DynamoDB supports conditional writes, which allow developers to enforce data integrity rules directly at the database layer. AWS documentation states that conditional expressions are the recommended way to prevent accidental overwrites and ensure idempotent writes.

Using a PutItem operation with the condition expression

attribute_not_exists(transactionId) ensures that the write succeeds only if the item does not already exist. If a duplicate transaction is received, DynamoDB rejects the request without modifying the existing record.

This approach is highly cost-effective because it avoids additional read operations. Option A doubles request cost by performing a read before every write. TTL (Option B) is unrelated to overwrite prevention. Option C does the opposite of the requirement by ensuring the attribute exists.

AWS explicitly recommends conditional writes for handling duplicates and enforcing uniqueness with minimal cost and latency.

Therefore, implementing a conditional put with attribute_not_exists(transactionId) is the correct solution.

Question: 3

A developer is working on a serverless application that needs to process any changes to an Amazon DynamoDB table with an AWS Lambda function.

How should the developer configure the Lambda function to detect changes to the DynamoDB table?

ACreate an Amazon Kinesis data stream, and attach it to the DynamoDB table. Create a trigger to connect the data stream to the Lambda function.

BCreate an Amazon EventBridge rule to invoke the Lambda function on a regular schedule. Conned to the DynamoDB table from the Lambda function to detect changes.

CEnable DynamoDB Streams on the table. Create a trigger to connect the DynamoDB stream to the Lambda function.

DCreate an Amazon Kinesis Data Firehose delivery stream, and attach it to the DynamoDB table. Configure the delivery stream destination as the Lambda function.

Answer: C

Explanation:

Amazon DynamoDB is a fully managed NoSQL database service that provides fast and consistent performance with seamless scalability. DynamoDB Streams is a feature that captures data modification events in DynamoDB tables. The developer can enable DynamoDB Streams on the table and create a trigger to connect the DynamoDB stream to the Lambda function. This solution will enable the Lambda function to detect changes to the DynamoDB table in near real time.

[Amazon DynamoDB]

[DynamoDB Streams - Amazon DynamoDB]

[Using AWS Lambda with Amazon DynamoDB - AWS Lambda]

Question: 4

A company is building a serverless application that uses AWS Lambda functions. The company needs to create a set of test events to test Lambda functions in a development environment. The test events will be created once and then will be used by all the developers in an 1AM developer group. The test events must be editable by any of the 1AM users in the 1AM developer group.

Which solution will meet these requirements?

ACreate and store the test events in Amazon S3 as JSON objects. Allow S3 bucket access to all 1AM users.

BCreate the test events. Configure the event sharing settings to make the test events shareable.

CCreate and store the test events in Amazon DynamoDB. Allow access to DynamoDB by using 1AM roles.

DCreate the test events. Configure the event sharing settings to make the test events private.

Answer: B

Question: 5

A company is offering APIs as a service over the internet to provide unauthenticated read access to statistical information that is updated daily. The company uses Amazon API Gateway and AWS Lambda to develop the APIs. The service has become popular, and the company wants to enhance the responsiveness of the APIs.

Which action can help the company achieve this goal?

AEnable API caching in API Gateway.

BConfigure API Gateway to use an interface VPC endpoint.

CEnable cross-origin resource sharing (CORS) for the APIs.

DConfigure usage plans and API keys in API Gateway.

Answer: A

Explanation:

Amazon API Gateway is a service that enables developers to create, publish, maintain, monitor, and secure APIs at any scale. The developer can enable API caching in API Gateway to cache responses from the backend integration point for a specified time-to-live (TTL) period. This can improve the responsiveness of the APIs by reducing the number of calls made to the backend service.

[What Is Amazon API Gateway? - Amazon API Gateway]

[Enable API Caching to Enhance Responsiveness - Amazon API Gateway]

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