Amazon DVA-C02 Question Answers

Question # 31

A company runs a batch processing application by using AWS Lambda functions and Amazon API Gateway APIs with deployment stages for development, user acceptance testing and production A development team needs to configure the APIs in the deployment stages to connect to third-party service endpoints. Which solution will meet this requirement? 

A. Store the third-party service endpoints in Lambda layers that correspond to the stage
B. Store the third-party service endpoints in API Gateway stage variables that correspondto the stage
C. Encode the third-party service endpoints as query parameters in the API Gatewayrequest URL.
D. Store the third-party service endpoint for each environment in AWS AppConfig

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Question # 32

A developer is creating an AWS Lambda function in VPC mode An Amazon S3 event will invoke the Lambda function when an object is uploaded into an S3 bucket The Lambda function will process the object and produce some analytic results that will be recorded into a file Each processed object will also generate a log entry that will be recorded into a file. Other Lambda functions. AWS services, and on-premises resources must have access to the result files and log file. Each log entry must also be appended to the same shared log file. The developer needs a solution that can share files and append results into an existing file. Which solution should the developer use to meet these requirements? 

A. Create an Amazon Elastic File System (Amazon EFS) file system. Mount the EFS filesystem in Lambda. Store the result files and log file in the mount point. Append the logentries to the log file.
B. Create an Amazon Elastic Block Store (Amazon EBS) Multi-Attach enabled volumeAttach the EBS volume to all Lambda functions. Update the Lambda function code to download the log file, append the log entries, and upload the modified log file to AmazonEBS
C. Create a reference to the /tmp local directory. Store the result files and log file by usingthe directory reference. Append the log entry to the log file.
D. Create a reference to the /opt storage directory Store the result files and log file by usingthe directory reference Append the log entry to the log file

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Question # 33

A company has built an AWS Lambda function to convert large image files into output files that can be used in a third-party viewer application The company recently added a new module to the function to improve the output of the generated files However, the new module has increased the bundle size and has increased the time that is needed to deploy changes to the function code. How can a developer increase the speed of the Lambda function deployment? 

A. Use AWS CodeDeploy to deploy the function code
B. Use Lambda layers to package and load dependencies.
C. Increase the memory size of the function.
D. Use Amazon S3 to host the function dependencies

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Question # 34

A developer is creating an Amazon DynamoDB table by using the AWS CLI The DynamoDB table must use server-side encryption with an AWS owned encryption key How should the developer create the DynamoDB table to meet these requirements? 

A. Create an AWS Key Management Service (AWS KMS) customer managed key. Providethe key's Amazon Resource Name (ARN) in the KMSMasterKeyld parameter duringcreation of the DynamoDB table
B. Create an AWS Key Management Service (AWS KMS) AWS managed key Provide thekey's Amazon Resource Name (ARN) in the KMSMasterKeyld parameter during creation ofthe DynamoDB table
C. Create an AWS owned key Provide the key's Amazon Resource Name (ARN) in theKMSMasterKeyld parameter during creation of the DynamoDB table.
D. Create the DynamoDB table with the default encryption options

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Question # 35

A developer is working on an ecommerce website The developer wants to review server logs without logging in to each of the application servers individually. The website runs on multiple Amazon EC2 instances, is written in Python, and needs to be highly available How can the developer update the application to meet these requirements with MINIMUM changes? 

A. Rewrite the application to be cloud native and to run on AWS Lambda, where the logscan be reviewed in Amazon CloudWatch
B. Set up centralized logging by using Amazon OpenSearch Service, Logstash, andOpenSearch Dashboards
C. Scale down the application to one larger EC2 instance where only one instance isrecording logs
D. Install the unified Amazon CloudWatch agent on the EC2 instances Configure the agentto push the application logs to CloudWatch

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Question # 36

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

A. Use the AWS:lnclude transform in CloudFormation to provide the log group's name tothe application
B. Pass the log group's name to the application in the user data section of theCloudFormation template.
C. Use the CloudFormation template's Mappings section to specify the log group's namefor the application.
D. Pass the log group's Amazon Resource Name (ARN) as an environment variable to theLambda function

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Question # 37

A company is planning to use AWS CodeDeploy to deploy an application to Amazon Elastic Container Service (Amazon ECS) During the deployment of a new version of the application, the company initially must expose only 10% of live traffic to the new version of the deployed application. Then, after 15 minutes elapse, the company must route all the remaining live traffic to the new version of the deployed application. Which CodeDeploy predefined configuration will meet these requirements? 

A. CodeDeployDefault ECSCanary10Percent15Minutes
B. CodeDeployDefault LambdaCanary10Percent5Minutes
C. CodeDeployDefault LambdaCanary10Percent15Minutes
D. CodeDeployDefault ECSLinear10PercentEvery1 Minutes

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Question # 38

A developer is creating an AWS Lambda function. The Lambda function needs an external library to connect to a third-party solution The external library is a collection of files with a total size of 100 MB The developer needs to make the external library available to the Lambda execution environment and reduce the Lambda package space Which solution will meet these requirements with the LEAST operational overhead? 

A. Create a Lambda layer to store the external library Configure the Lambda function touse the layer
B. Create an Amazon S3 bucket Upload the external library into the S3 bucket. Mount theS3 bucket folder in the Lambda function Import the library by using the proper folder in themount point.
C. Load the external library to the Lambda function's /tmp directory during deployment ofthe Lambda package. Import the library from the /tmp directory.
D. Create an Amazon Elastic File System (Amazon EFS) volume. Upload the externallibrary to the EFS volume Mount the EFS volume in the Lambda function. Import the libraryby using the proper folder in the mount point.

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Question # 39

A developer is investigating an issue in part of a company's application. In the application messages are sent to an Amazon Simple Queue Service (Amazon SQS) queue The AWS Lambda function polls messages from the SQS queue and sends email messages by using Amazon Simple Email Service (Amazon SES) Users have been receiving duplicate email messages during periods of high traffic. Which reasons could explain the duplicate email messages? (Select TWO.) 

A. Standard SQS queues support at-least-once message delivery
B. Standard SQS queues support exactly-once processing, so the duplicate emailmessages are because of user error.
C. Amazon SES has the DomainKeys Identified Mail (DKIM) authentication incorrectlyconfigured
D. The SQS queue's visibility timeout is lower than or the same as the Lambda function'stimeout.
E. The Amazon SES bounce rate metric is too high.

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Question # 40

A company developed an API application on AWS by using Amazon CloudFront. Amazon API Gateway, and AWS Lambda. The API has a minimum of four requests every second A developer notices that many API users run the same query by using the POST method. The developer wants to cache the POST request to optimize the API resources. Which solution will meet these requirements'? 

A. Configure the CloudFront cache Update the application to return cached content basedupon the default request headers.
B. Override the cache method in me selected stage of API Gateway Select the POSTmethod.
C. Save the latest request response in Lambda /tmp directory Update the Lambda functionto check the /tmp directory
D. Save the latest request m AWS Systems Manager Parameter Store Modify the Lambdafunction to take the latest request response from Parameter Store

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