The Developer for a Retail Company Must Integrate a Fraud

question 356

Multiple Choice

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?

• A) 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.
• B) 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.
• C) 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.
• D) 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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Definitions:

Contract Rate

The agreed-upon rate specified in a contract for the provision of goods or services, often discussed in the context of interest rates or wages.

Market Rate

The prevailing interest rate available in the marketplace for securities or loans.

Journal Entry

A record in the accounting ledger that represents a transaction, including both the debit and credit side to maintain the accounting equation.

Bonds Payable

Bonds payable refers to the amount of money a company owes to bondholders and is recorded as a long-term liability on the company's balance sheet.