By Amazon DVA-C02 AWS Certified Developer – Associate Exam Guide
Certkingdom provides the best Amazon DVA-C02 AWS Certified Developer Associate exam dumps with real questions, verified answers, and guaranteed success.
The Amazon DVA-C02 AWS Certified Developer – Associate Exam validates your ability to develop, deploy, and debug cloud-based applications using Amazon Web Services (AWS).
This certification is ideal for developers with hands-on experience in AWS services, APIs, SDKs, and CI/CD pipelines.
Key Topics Covered in DVA-C02 Exam
1. Development with AWS Services
AWS SDKs and APIs
Writing code for serverless applications
Using AWS Lambda
Integration with Amazon API Gateway
2. Security Best Practices
IAM roles and policies
Encryption using AWS KMS
Secure coding practices
3. Deployment
CI/CD pipelines using AWS CodePipeline
Infrastructure as Code (IaC) using CloudFormation
Application deployment strategies
4. Troubleshooting & Optimization
Debugging cloud apps
Monitoring using Amazon CloudWatch
Performance optimization
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Preparation Resources & Solutions
Recommended Study Approach
Learn AWS core services (Lambda, S3, DynamoDB)
Practice real-world scenarios
Use mock exams and dumps
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QUESTION 1
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?
A. Use an AWS Systems Manager Parameter Store SecureString parameter that uses an AWS Key
Management Service (AWS KMS) AWS managed key to store the access token. Add a resource-based
policy to the parameter to allow access from other accounts. Update the IAM role of the EC2
instances with permissions to access Parameter Store. Retrieve the token from Parameter Store with
the decrypt flag enabled. Use the decrypted access token to send the message to the chat.
B. Encrypt the access token by using an AWS Key Management Service (AWS KMS) customer
managed key. Store the access token in an Amazon DynamoDB table. Update the IAM role of the EC2
instances with permissions to access DynamoDB and AWS KMS. Retrieve the token from DynamoDB.
Decrypt the token by using AWS KMS on the EC2 instances. Use the decrypted access token to send
the message to the chat.
C. Use AWS Secrets Manager with an AWS Key Management Service (AWS KMS) customer managed
key to store the access token. Add a resource-based policy to the secret to allow access from other
accounts. Update the IAM role of the EC2 instances with permissions to access Secrets Manager.
Retrieve the token from Secrets Manager. Use the decrypted access token to send the message to the chat.
D. Encrypt the access token by using an AWS Key Management Service (AWS KMS) AWS managed
key. Store the access token in an Amazon S3 bucket. Add a bucket policy to the S3 bucket to allow
access from other accounts. Update the IAM role of the EC2 instances with permissions to access
Amazon S3 and AWS KMS. Retrieve the token from the S3 bucket. Decrypt the token by using AWS
KMS on the EC2 instances. Use the decrypted access token to send the massage to the chat.
Answer: C
QUESTION 2
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?
A. Configure Amazon EC2 to deliver the EC2 instance lifecycle events from all accounts to the Amazon
EventBridge event bus of the main account. Add an EventBridge rule to the event bus of the main
account that matches all EC2 instance lifecycle events. Add the SQS queue as a target of the rule.
B. Use the resource policies of the SQS queue in the main account to give each account permissions
to write to that SQS queue. Add to the Amazon EventBridge event bus of each account an
EventBridge rule that matches all EC2 instance lifecycle events. Add the SQS queue in the main
account as a target of the rule.
C. Write an AWS Lambda function that scans through all EC2 instances in the company accounts to
detect EC2 instance lifecycle changes. Configure the Lambda function to write a notification message
to the SQS queue in the main account if the function detects an EC2 instance lifecycle change. Add an
Amazon EventBridge scheduled rule that invokes the Lambda function every minute.
D. Configure the permissions on the main account event bus to receive events from all accounts.
Create an Amazon EventBridge rule in each account to send all the EC2 instance lifecycle events to
the main account event bus. Add an EventBridge rule to the main account event bus that matches all
EC2 instance lifecycle events. Set the SQS queue as a target for the rule.
Answer: D
Explanation:
Amazon EC2 instances can send the state-change notification events to Amazon EventBridge.
QUESTION 3
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?
A. Use S3 Event Notifications to validate the file upload and download requests and update the user interface (UI).
B. Save the details of the uploaded files in a separate Amazon DynamoDB table. Filter the list of files
in the user interface (UI) by comparing the current user ID with the user ID associated with the file in the table.
C. Use Amazon API Gateway and an AWS Lambda function to upload and download files. Validate
each request in the Lambda function before performing the requested operation.
D. Use an IAM policy within the Amazon Cognito identity prefix to restrict users to use their own folders in Amazon S3.
Answer: D
QUESTION 4
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?
A. AWS Batch
B. AWS Step Functions
C. AWS Glue
D. AWS Lambda
Answer: B
Explanation:
QUESTION 5
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?
A. The Lambda function’s concurrency limit has been exceeded.
B. DynamoDB table requires a global secondary index (GSI) to support writes.
C. The Lambda function does not have IAM permissions to write to DynamoDB.
D. The DynamoDB table is not running in the same Availability Zone as the Lambda function.
Answer: C
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Top 10 FAQs
1. What is the DVA-C02 exam?
It is an AWS certification for developers focusing on cloud-based applications.
2. How hard is the exam?
Moderate difficulty with hands-on experience required.
3. How many questions are in the exam?
Around 65 questions.
4. What is the passing score?
Approximately 720 out of 1000.
5. How long is the exam?
130 minutes.
6. Are dumps useful?
Yes, if they are updated and verified like Certkingdom.
7. Can beginners pass this exam?
Yes, with proper study and practice.
8. What programming language is needed?
Any (Python, JavaScript, Java preferred).
9. How long should I prepare?
2–6 weeks depending on experience.
10. Is this certification worth it?
Yes, it boosts career opportunities in cloud development.
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