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Amazon DVA-C01 Practice Test - Questions Answers, Page 19

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Question 181

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The Developer for a retail company must integrate a fraud detection solution into the order processing solution. The fraud detection solution takes between ten and thirty minutes to verify an order.

Question 182

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A Developer is creating a mobile application with a limited budget. The solution requires a scalable service that will enable customers to sign up and authenticate into the mobile application while

Question 183

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An application is real-time processing millions of events that are received through an API. What service could be used to allow multiple consumers to process the data concurrently and MOST cost-eff

Question 184

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A Developer needs to use AWS X-Ray to monitor an application that is deployed on EC2 instances. What steps have to be executed to perform the monitoring?

Question 185

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A Developer will be using the AWS CLI on a local development server to manage AWS services. What can be done to ensure that the CLI uses the Developer’s IAM permissions when making commands?

Question 186

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After installing the AWS CLI, a Developer tries to run the command aws configure but receives the following error: Error: aws: command not found What is the most likely cause of this error?

Question 187

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An on-premises legacy application is caching data files locally and writing shared images to local disks. What is necessary to allow for horizontal scaling when migrating the application to AWS?

Question 188

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A Developer must trigger an AWS Lambda function based on the item lifecycle activity in an Amazon DynamoDB table. How can the Developer create the solution?

Question 189

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A gaming company is developing a mobile game application for iOS® and Android® platforms. This mobile game securely stores user data locally on the device. The company wants to allow users to use mu

Question 190

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An on-premises application is implemented using a Linux, Apache, MySQL and PHP (LAMP) stack. The Developer wants to run this application in AWS. Which of the following sets of AWS services can be

Question 181

The Developer for a retail company must integrate a fraud detection solution into the order processing solution. The fraud detection solution takes between ten and thirty minutes to verify an order. At peak, the web site can receive one hundred orders per minute.

What is the most scalable method to add the fraud detection solution to the order processing pipeline?

Add all new orders to an Amazon SQS queue. Configure a fleet of 10 EC2 instances spanning multiple AZs with the fraud detection solution installed on them to pull orders from this queue. Update the order with a pass or fails status.

Add all new orders to an SQS queue. Configure an Auto Scaling group that uses the queue depth metric as its unit of scale to launch a dynamically-sized fleet of EC2 instances spanning multiple AZs with the fraud detection solution installed on them to pull orders from this queue. Update the order with a pass or fails status.

Add all new orders to an Amazon Kinesis Stream. Subscribe a Lambda function to automatically read batches of records from the Kinesis Stream. The Lambda function includes the fraud detection software and will update the order with a pass or fail status.

Write all new orders to Amazon DynamoDB. Configure DynamoDB Streams to include all new orders. Subscribe a Lambda function to automatically read batches of records from the Kinesis Stream. The Lambda function includes the fraud detection software and will update the order with a pass or fail status.

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Question 182

A Developer is creating a mobile application with a limited budget. The solution requires a scalable service that will enable customers to sign up and authenticate into the mobile application while using the organization’s current SAML 2.0 identity provider.

Which AWS service should be used to meet these requirements?

AWS Lambda

Amazon Cognito

AWS IAM

Amazon EC2

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Question 183

An application is real-time processing millions of events that are received through an API.

What service could be used to allow multiple consumers to process the data concurrently and MOST cost-effectively?

Amazon SNS with fanout to an SQS queue for each application

Amazon SNS with fanout to an SQS FIFO (first-in, firtst-out) queue for each application

Amazon Kinesis Firehouse

Amazon Kinesis Streams

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Question 184

A Developer needs to use AWS X-Ray to monitor an application that is deployed on EC2 instances.

What steps have to be executed to perform the monitoring?

Deploy the X-Ray SDK with the application and use X-Ray annotation.

Install the X-Ray daemon and instrument the application code.

Install the X-Ray daemon and configure it to forward data to Amazon CloudWatch Events.

Deploy the X-Ray SDK with the application and instrument the application code.

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Question 185

A Developer will be using the AWS CLI on a local development server to manage AWS services.

What can be done to ensure that the CLI uses the Developer’s IAM permissions when making commands?

Specify the Developer’s IAM access key ID and secret access key as parameters for each CLI command.

Run the aws configure CLI command, and provide the Developer’s IAM access key ID and secret access key.

Specify the Developer’s IAM user name and password as parameters for each CLI command.

Use the Developer’s IAM role when making the CLI command.

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Question 186

After installing the AWS CLI, a Developer tries to run the command aws configure but receives the following error:

Error: aws: command not found

What is the most likely cause of this error?

The aws executable is not in the PATH environment variable.

Access to the aws executable has been denied to the installer.

Incorrect AWS credentials were provided.

The aws script does not have an executable file mode.

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Question 187

An on-premises legacy application is caching data files locally and writing shared images to local disks. What is necessary to allow for horizontal scaling when migrating the application to AWS?

Modify the application to have both shared images and caching data written to Amazon EBS.

Modify the application to read and write cache data on Amazon S3, and also store shared images on S3.

Modify the application to use Amazon S3 for serving shared images; cache data can then be written to local disks.

Modify the application to read and write cache data on Amazon S3, while continuing to write shared images to local disks.

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Question 188

A Developer must trigger an AWS Lambda function based on the item lifecycle activity in an Amazon DynamoDB table. How can the Developer create the solution?

Enable a DynamoDB stream that publishes an Amazon SNS message. Trigger the Lambda function synchronously from the SNS message.

Enable a DynamoDB stream that publishes an SNS message. Trigger the Lambda function asynchronously from the SNS message.

Enable a DynamoDB stream, and trigger the Lambda function synchronously from the stream.

Enable a DynamoDB stream, and trigger the Lambda function asynchronously from the stream.

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