Free Amazon DVA-C02 Exam Questions

Question 1

A social media company is designing a platform that allows users to upload data, which is stored in AmazonS3. Users can upload data encrypted with a public key. The company wants to ensure that only the companycan decrypt the uploaded content using an asymmetric encryption key. The data must always be encrypted intransit and at rest.Options:

A : Use server-side encryption with Amazon S3 managed keys (SSE-S3) to encrypt the data.

B : Use server-side encryption with customer-provided encryption keys (SSE-C) to encrypt the data.

C : Use client-side encryption with a data key to encrypt the data.

D : Use client-side encryption with a customer-managed encryption key to encrypt the data.

Answer: D

Question 2

An application that is deployed to Amazon EC2 is using Amazon DynamoDB. The app cation calls theDynamoDB REST API Periodically the application receives a ProvisionedThroughputExceededExceptionerror when the application writes to a DynamoDB table.Which solutions will mitigate this error MOST cost-effectively^ (Select TWO)

A : Modify the application code to perform exponential back off when the error is received.

B : Modify the application to use the AWS SDKs for DynamoDB.

C : Increase the read and write throughput of the DynamoDB table.

D : Create a DynamoDB Accelerator (DAX) cluster for the DynamoDB table.

E : Create a second DynamoDB table Distribute the reads and writes between the two tables.

Answer: A,B

Question 3

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

Question 4

A developer is creating a serverless application that uses an AWS Lambda function The developer will useAWS CloudFormation to deploy the application The application will write logs to Amazon CloudWatch LogsThe developer has created a log group in a CloudFormation template for the application to use The developerneeds to modify the CloudFormation template to make the name of the log group available to the applicationat runtimeWhich solution will meet this requirement?

A : Use the AWS:lnclude transform in CloudFormation to provide the log group ' s name to the application

B : Pass the log group ' s name to the application in the user data section of the CloudFormation template.

C : Use the CloudFormation template ' s Mappings section to specify the log group ' s name for theapplication.

D : Pass the log group ' s Amazon Resource Name (ARN) as an environment variable to the Lambdafunction

Answer: D

Question 5

A developer is designing an event-driven architecture. An AWS Lambda function that processes data needs topush processed data to a subset of four consumer Lambda functions. The data must be routed based on thevalue of one field in the data.Which solution will meet these requirements with the LEAST operational overhead?

A : Create an Amazon Simple Queue Service {Amazon SQS) queue and even! source mapping for eachconsumer Lambda function. Add message routing logic to the data-processing Lambda function.

B : Create an Amazon Simple Notification Service (Amazon SNS) topic. Subscribe the four consumerLambda functions to the topic. Add message filtering logic to each consumer Lambda function.Subscribe the data-processing Lambda function to the SNS topic.

C : Create a separate Amazon Simple Notification Service (Amazon SNS) topic and subscription for eachconsumer Lambda function. Add message routing logic to the data-processing Lambda function topublish to the appropriate topic.

D : Create a single Amazon Simple Notification Service {Amazon SNS) topic. Subscribe the fourconsumer Lambda functions to the topic. Add SNS subscription filter policies to each subscription.Configure the data-processing Lambda function to publish to the topic.

Answer: B