Free Amazon DVA-C02 Exam Questions

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

Page: 1 / 110

Total 550 Questions | Updated On: Apr 21, 2026

Add To Cart

Question 1

A developer is deploying an AWS Lambda function The developer wants the ability to return to olderversions of the function quickly and seamlessly.How can the developer achieve this goal with the LEAST operational overhead?

A : Use AWS OpsWorks to perform blue/green deployments.

B : Use a function alias with different versions.

C : Maintain deployment packages for older versions in Amazon S3.

D : Use AWS CodePipeline for deployments and rollbacks.

Answer: B

Question 2

An application writes transactions to an Amazon DynamoDB table by using the PutItem operation. Eachtransaction has a unique transactionId. Sometimes duplicate transactions are received. The developer wants toensure that a duplicate PutItem does not overwrite an existing item. Duplicate transactions are rare.What is the MOST cost-effective solution?

A : Call GetItem before calling PutItem.

B : Enable TTL on the table.

C : Use a conditional put with attribute_exists(transactionId).

D : Use a conditional put with attribute_not_exists(transactionId).

Answer: D

Question 3

A developer is troubleshooting a three-tier application, which is deployed on Amazon EC2 instances. There isa connectivity problem between the application servers and the database servers.Which AWS services or tools should be used to identify the faulty component? (Select TWO.)

A : AWS CloudTrail

B : AWS Trusted Advisor

C : Amazon VPC Flow Logs

D : Network access control lists

E : AWS Config rules

Answer: C,D

Question 4

A company is creating an application that processes csv files from Amazon S3 A developer has created an S3bucket The developer has also created an AWS Lambda function to process the csv files from the S3 bucketWhich combination of steps will invoke the Lambda function when a csv file is uploaded to Amazon S3?(Select TWO.)

A : Create an Amazon EventBridge rule Configure the rule with a pattern to match the S3 object createdevent

B : Schedule an Amazon EventBridge rule to run a new Lambda function to scan the S3 bucket.

C : Add a trigger to the existing Lambda function. Set the trigger type to EventBridge Select the AmazonEventBridge rule.

D : Create a new Lambda function to scan the S3 bucket for recently added S3 objects

E : Add S3 Lifecycle rules to invoke the existing Lambda function

Answer: A,E

Question 5

A developer is building a new application on AWS. The application uses an AWS Lambda function thatretrieves information from an Amazon DynamoDB table. The developer hardcoded the DynamoDB tablename into the Lambda function code. The table name might change over time. The developer does not want tomodify the Lambda code if the table name changes.Which solution will meet these requirements MOST efficiently?

A : Create a Lambda environment variable to store the table name. Use the standard method for theprogramming language to retrieve the variable.

B : Store the table name in a file. Store the file in the /tmp folder. Use the SDK for the programminglanguage to retrieve the table name.

C : Create a file to store the table name. Zip the file and upload the file to the Lambda layer. Use the SDKfor the programming language to retrieve the table name.

D : Create a global variable that is outside the handler in the Lambda function to store the table name.

Answer: C

Page: 1 / 110

Total 550 Questions | Updated On: Apr 21, 2026

Add To Cart