An IoT Company Wants to Release a New Device That

question 68

Multiple Choice

An IoT company wants to release a new device that will collect data to track sleep overnight on an intelligent mattress. Sensors will send data that will be uploaded to an Amazon S3 bucket. About 2 MB of data is generated each night for each bed. Data must be processed and summarized for each user, and the results need to be available as soon as possible. Part of the process consists of time windowing and other functions. Based on tests with a Python script, every run will require about 1 GB of memory and will complete within a couple of minutes. Which solution will run the script in the MOST cost-effective way?

• A) AWS Lambda with a Python script
• B) AWS Glue with a Scala job
• C) Amazon EMR with an Apache Spark script
• D) AWS Glue with a PySpark job

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Definitions:

Tied Values

Instances where two or more data points or observations have the exact same value in a dataset.

Averaging Procedure

A method of summarizing data by calculating the mean or average of a set of values.

Wilcoxon Rank Sum Test

This statistical test, which doesn't assume a specific distribution, is used to assess if two distinct samples have different population mean rankings.

Mann-Whitney Test

A non-parametric test used to evaluate whether two independent samples are drawn from the same distribution or differ significantly.