A Retail Chain Has Been Ingesting Purchasing Records from Its

question 103

Multiple Choice

A retail chain has been ingesting purchasing records from its network of 20,000 stores to Amazon S3 using Amazon Kinesis Data Firehose. To support training an improved machine learning model, training records will require new but simple transformations, and some attributes will be combined. The model needs to be retrained daily. Given the large number of stores and the legacy data ingestion, which change will require the LEAST amount of development effort?

• A) Require that the stores to switch to capturing their data locally on AWS Storage Gateway for loading into Amazon S3, then use AWS Glue to do the transformation.
• B) Deploy an Amazon EMR cluster running Apache Spark with the transformation logic, and have the cluster run each day on the accumulating records in Amazon S3, outputting new/transformed records to Amazon S3.
• C) Spin up a fleet of Amazon EC2 instances with the transformation logic, have them transform the data records accumulating on Amazon S3, and output the transformed records to Amazon S3.
• D) Insert an Amazon Kinesis Data Analytics stream downstream of the Kinesis Data Firehose stream that transforms raw record attributes into simple transformed values using SQL.

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Definitions:

Interest Expense

The cost incurred by an entity for borrowed funds, calculated as the principal times the interest rate over a period.

Residual Value

The estimated value that an asset will have at the end of its useful life, often used in calculating depreciation.

Capital Lease

A type of long-term lease agreement in which the lessee essentially buys an asset and pays for it over the lease term, with the asset's ownership potentially transferring to the lessee at the lease's end.

Bargain Purchase Option

A provision in a leasing contract permitting the lessee to buy the leased item for a price well below the anticipated market value once the lease period concludes.