Free Amazon DVA-C02 Exam Questions

Question 1

A developer is creating an application that uses an AWS Lambda function to transform and load data from an Amazon S3 bucket. When the developer tests the application, the developer finds that some invocations of the Lambda function are slower than others. The developer needs to update the Lambda function to have predictable invocation durations that run with low latency. Any initialization activities, such as loading libraries and instantiating clients, must run during allocation time rather than during actual function invocations. Which combination of steps will meet these requirements? (Select TWO.)

A : Create a schedule group in Amazon EventBridge Scheduler to invoke the Lambda function.

B : Configure provisioned concurrency for the Lambda function to have the necessary number of execution environments.

C : Use the SLATEST version of the Lambda function.

D : Configure reserved concurrency for the Lambda function to have the necessary number of execution environments.

E : Deploy changes, and publish a new version of the Lambda function.

Answer: B,D

Question 2

The manager of a development team is setting up a shared S3 bucket for team members. The manager would like to use a single policy to allow each user to have access to their objects in the S3 bucket. Which feature can be used to generalize the policy?

A : riable

B : ndition

C : ource

D : incipal

Answer: A

Question 3

A developer is updating an Amazon API Gateway REST API to have a mock endpoint. The developer wants to update the integration request mapping template so the endpoint will respond to mock integration requests with specific HTTP status codes based on various conditions.

A : { if( $input.params(‘integration’) == "mock" ) "statusCode": 404 else "statusCode": 500 end }

B : { if( $input.params('scope') == "internal" ) "statusCode": 200 else "statusCode": 500 end }

C : { if( $input.path("integration") ) "statusCode": 200 else "statusCode":404 end }

D : { if( $context.integration.status ) "statusCode": 200 else "statusCode": 500 end }

Answer: D

Question 4

A developer has a legacy application that is hosted on-premises. Other applications hosted on AWS depend on the on-premises application for proper functioning. In case of any application errors, the developer wants to be able to use Amazon CloudWatch to monitor and troubleshoot all applications from one place. How can the developer accomplish this?

A : Install an AWS SDK on the on-premises server to automatically send logs to CloudWatch.

B : Download the CloudWatch agent to the on-premises server. Configure the agent to use IAM user credentials with permissions for CloudWatch.

C : Upload log files from the on-premises server to Amazon S3 and have CloudWatch read the files.

D : Upload log files from the on-premises server to an Amazon EC2 instance and have the instance forward the logs to CloudWatch.

Answer: B

Question 5

A company needs to package and deploy an application that uses AWS Lambda to compress and decompress video clips. The application uses a video codec library that is larger than 250 MB. The application uses the library to compress the videos before storage and to decompress the videos upon retrieval.

A : Create one Lambda function. Upload one zip file that contains code to handle video compression and decompression to the function. Include the codec library in the zip file

B : Create two Lambda functions. Upload one zip file that contains code to handle video compression to one function. Upload a second zip file that contains code for video decompression to the second function. Include the codec library in both zip files.

C : Create two Lambda functions. Upload one zip file that contains code to handle video compression to one function. Upload a second zip file that contains code for video decompression to the second function. Create one Lambda layer for the codec library. Add the layer to both functions.

D : Create two Lambda functions. Build one container image that contains code to handle video compression and a second image that contains video decompression code. Add the codec library to both images. Upload the images to Amazon ECR. Use the containers to create the Lambda functions.

Answer: D