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Amazon DVA-C02

AWS Certified Developer - Associate

Verified practice questions with detailed answers, clear explanations, and community discussion.

  • 557

    questions

  • 7 days ago

    last updated

  • 4.8/5

    overall rating

Question 1 of 557

A company is implementing an application on Amazon EC2 instances. The application needs to process incoming transactions. When the application detects a transaction that is not valid, the application must send a chat message to the company's support team. To send the message, the application needs to retrieve the access token to authenticate by using the chat API.

A developer needs to implement a solution to store the access token. The access token must be encrypted at rest and in transit. The access token must also be accessible from other AWS accounts.

Which solution will meet these requirements with the LEAST management overhead?

Answer choices
Show answer

Correct answer: C

The access token must be stored securely, both at rest and in transit, and it must be accessible from other AWS accounts with minimal management overhead. AWS Secrets Manager is designed specifically for managing secrets like access tokens and provides built-in encryption using AWS KMS. It also supports resource-based policies that allow access from other accounts, which aligns perfectly with the requirement. Additionally, Secrets Manager automates many aspects of secret management, including rotation, which reduces management overhead compared to other services. This makes AWS Secrets Manager the most appropriate choice.

Community votes

81 votes

CSuggested

88%

A

9%

D

4%

Question 2 of 557

A company is running Amazon EC2 instances in multiple AWS accounts. A developer needs to implement an application that collects all the lifecycle events of the EC2 instances. The application needs to store the lifecycle events in a single Amazon Simple Queue Service (Amazon SQS) queue in the company's main AWS account for further processing.

Which solution will meet these requirements?

Answer choices
Show answer

Correct answer: D

The best solution is to configure the permissions on the main account's event bus to receive events from all accounts. An Amazon EventBridge rule should be created in each account to send all the EC2 instance lifecycle events to the main account's event bus. Then, within the main account's event bus, an EventBridge rule should be set up to match all EC2 instance lifecycle events and target the SQS queue. This approach leverages EventBridge’s cross-account event sharing capabilities, ensures centralization of event management, and does not introduce unnecessary complexity or inefficiency.

Community votes

42 votes

DSuggested

81%

B

14%

A

2%

C

2%

Question 3 of 557

An application is using Amazon Cognito user pools and identity pools for secure access. A developer wants to integrate the user-specific file upload and download features in the application with Amazon S3. The developer must ensure that the files are saved and retrieved in a secure manner and that users can access only their own files. The file sizes range from 3 KB to 300 MB.

Which option will meet these requirements with the HIGHEST level of security?

Answer choices
Show answer

Correct answer: D

To ensure that only authenticated users can access their own files using Amazon Cognito user pools and identity pools, and to maintain the highest level of security, utilizing IAM policies within the Amazon Cognito identity prefix is the optimal approach. By implementing this IAM policy, each user is restricted to accessing only their personalized folders in Amazon S3, ensuring file security and user-specific access control. This method leverages AWS's built-in security mechanisms, which are robust and reliable, to enforce strict access rules, thereby mitigating potential risks associated with custom-built solutions or additional overhead in managing external tables.

Community votes

27 votes

DSuggested

93%

B

4%

C

4%

Question 4 of 557

A company is building a scalable data management solution by using AWS services to improve the speed and agility of development. The solution will ingest large volumes of data from various sources and will process this data through multiple business rules and transformations.

The solution requires business rules to run in sequence and to handle reprocessing of data if errors occur when the business rules run. The company needs the solution to be scalable and to require the least possible maintenance.

Which AWS service should the company use to manage and automate the orchestration of the data flows to meet these requirements?

Answer choices
Show answer

Correct answer: B

AWS Step Functions is the appropriate service for managing and automating the orchestration of data flows. It allows the execution of business rules in sequence and includes features for error handling and reprocessing of data. This service is designed to build scalable workflows with minimal maintenance, which aligns perfectly with the requirements.

Community votes

37 votes

BSuggested

89%

D

5%

C

5%

Question 5 of 557

A developer has created an AWS Lambda function that is written in Python. The Lambda function reads data from objects in Amazon S3 and writes data to an Amazon DynamoDB table. The function is successfully invoked from an S3 event notification when an object is created. However, the function fails when it attempts to write to the DynamoDB table.

What is the MOST likely cause of this issue?

Answer choices
Show answer

Correct answer: C

The most likely cause of the issue is that the Lambda function does not have IAM permissions to write to DynamoDB. When AWS Lambda functions interact with other AWS services, appropriate IAM permissions are required. If the Lambda function is able to read from S3 but fails when writing to DynamoDB, it indicates that the function's IAM role may lack the necessary permissions for DynamoDB write operations.

Community votes

35 votes

CSuggested

100%

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As this was my first certification exam, I was understandably nervous about what to expect. These study materials made the preparation process much easier, and many of the questions closely reflected those on the actual exam.
Charles Sirois
Canada
May 5, 2026
Wasted about a month going through the free dump sites scattered all over reddit, half the answers were wrong and the other half were for a version of the exam that doesn't even exist anymore. Eventually gave in and paid the small fee here, and the difference was night and day.
Lance Chambers
United States
Apr 11, 2026
Honestly, I had already gone through the official documentation quite thoroughly, but still didn't feel fully confident going in. This helped things finally click for me. I realized I knew the material, but just hadn't connected all the pieces yet.
Alisha Kelly
Italy
Apr 9, 2026
Used this along with Microsoft Learn and the combo worked really well. The practice questions made the stuff I'd read actually stick. Passed first attempt, no complaints from me.
Casper Claassen
Netherlands
Jun 2, 2025
The content is accurate and clearly presented, and it's more affordable than competitors. The team has been incredibly responsive whenever I've had an issue, and they've been open to small changes that improve the platform.
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Apr 13, 2026
I don't usually leave reviews, but this one felt worth sharing. The questions were quite close to what actually appeared on the exam, more than I expected. I spent about a week going through the material before my test, and it helped me feel more prepared.
Morgan Farmer
United Kingdom
May 4, 2026
Passed ITIL 4 Foundation with 87%. Material was enough by itself.
Remi Nuyts
United States
Apr 9, 2026
I had a smooth experience from start to finish. Access was available right away, no technical issues, which made it easy to get started. The content felt relevant and aligned well with what I was looking for.
Archie Hopkins
United States
Apr 11, 2026
Does what it says it does. Content felt solid, nothing confusing to navigate and I didn't run into any weird issues. I been putting off scheduling the exam for a while and going through this gave me enough confidence to finally book it and pass.
Nancy Mcbride
United States
May 8, 2026
A very quick response was received via email when a link issue occurred. The study materials provided were high quality and extremely helpful. I was able to complete the test successfully. Many thanks for the excellent support.
Neil Savage
United States

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