Free Amazon DVA-C02 Exam Questions

Become Amazon Certified with updated DVA-C02 exam questions and correct answers

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Total 968 Questions | Updated On: Nov 04, 2025

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Question 1

An application writes items to an Amazon DynamoDB table. As the application scales to thousands of instances, calls to the DynamoDB API generate occasional ThrottlingException errors. The application is coded in a language that is incompatible with the AWS SDK.

What can be done to prevent the errors from occurring?

A : exponential backoff to the application logic

B : nd the items to DynamoDB through Amazon Kinesis Data Firehose

C : API calls through Amazon API Gateway

D : Amazon SQS as an API message bus

Answer: A

Question 2

A company requires that all applications running on Amazon EC2 use IAM roles to gain access to AWS services. A developer is modifying an application that currently relies on IAM user access keys stored in environment variables to access Amazon DynamoDB tables using boto, the AWS SDK for Python.

The developer associated a role with the same permissions as the IAM user to the EC2 instance, then deleted the IAM user. When the application was restarted, the AWS AccessDeniedException messages started appearing in the application logs. The developer was able to use their personal account on the server to run DynamoDB API commands using the AWS CLI.

What is the MOST likely cause of the exception?

A : IAM policies might take a few minutes to propagate to resources.

B : Disabled environment variable credentials are still being used by the application.

C : The AWS SDK does not support credentials obtained using an instance role.

D : The instance’s security group does not allow access to http://169.254.169.254.

Answer: B

Question 3

While defining a business workflow as state machine on AWS Step Functions, a developer has configured several states.

Which of the following would you identify as the state that represents a single unit of work performed by a state machine?

A : "FailState": { "Type": "Fail", "Cause": "Invalid response.", "Error": "ErrorA"}

B : "HelloWorld": { "Type": "Task", "Resource": "arn:aws:lambda:us-east-1:123456789012:function:HelloFunction", "Next": "AfterHelloWorldState", "Comment": "Run the HelloWorld Lambda function"}

C : "wait_until" : { "Type": "Wait", "Timestamp": "2016-03-14T01:59:00Z", "Next": "NextState"}

D : "No-op": { "Type": "Task", "Result": { "x-datum": 0.381018, "y-datum": 622.2269926397355 }, "ResultPath": "$.coords", "Next": "End"}

Answer: B

Question 4

An organization has an Amazon S3 bucket containing premier content that they intend to make available to only paid subscribers of their website. The objects in the S3 bucket are private to prevent inadvertent exposure of the premier content to non-paying website visitors.

How can the organization provide only paid subscribers the ability to download the premier content in the S3 bucket?

A : able server-side encryption on the S3 bucket for data protection against the non-paying website visitors

B : ply a bucket policy that grants anonymous users to download the content from the S3 bucket

C : nerate a pre-signed object URL for the premier content file when a paid subscriber requests a download

D : a bucket policy that requires Multi-Factor Authentication for requests to access the S3 bucket objects

Answer: C

Question 5

An ecommerce startup is preparing for an annual sales event. As the traffic to the company's application increases, the development team wants to be notified when the Amazon EC2 instance's CPU utilization exceeds 80%. Which solution will meet this requirement?

A : Create a custom Amazon CloudWatch alarm that sends a notification to an Amazon SNS topic when the CPU utilization exceeds 80%.

B : Create a custom AWS CloudTrail alarm that sends a notification to an Amazon SNS topic when the CPU utilization exceeds 80%.

C : Create a cron job on the EC2 instance that invokes the --describe-instance-information command on the host instance every 15 minutes and sends the results to an Amazon SNS topic.

D : Create an AWS Lambda function that queries the AWS CloudTrail logs for the CPUUtilization metric every 15 minutes and sends a notification to an Amazon SNS topic when the CPU utilization exceeds 80%.

Answer: A

Page: 1 / 194

Total 968 Questions | Updated On: Nov 04, 2025

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