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Exam 6: Big Data and Analytics

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Question 1

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In a Hadoop "stack," what node periodically replicates and stores data from the Name Node should it fail?

A) backup node
B) secondary node
C) substitute node
D) slave node

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Question 2

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In the eBay use case study,load ________ helped the company meet its Big Data needs with the extremely fast data handling and application availability requirements.

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Question 3

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Hadoop and MapReduce require each other to work.

Most Big Data is generated automatically by ________.

It is important for Big Data and self-service business intelligence go hand in hand to get maximum value from analytics.

In the Luxottica case study,what technique did the company use to gain visibility into its customers?

Define MapReduce.

Describe data stream mining and how it is used.

In the investment bank case study,the major benefit brought about by the supplanting of multiple databases by the new trade operational store was providing real-time access to trading data.

If you have many flexible programming languages running in parallel,Hadoop is preferable to a data warehouse.

Big Data simplifies data governance issues,especially for global firms.

What is Big Data's relationship to the cloud?

In the energy industry,________ grids are one of the most impactful applications of stream analytics.

List and describe four of the most critical success factors for Big Data analytics.

In the Luxottica case study,outsourcing enhanced the ability of the company to gain insights into their data.

In open-source databases,the most important performance enhancement to date is the cost-based ________.

For low latency,interactive reports,a data warehouse is preferable to Hadoop.

Data flows can be highly inconsistent,with periodic peaks,making data loads hard to manage.What is this feature of Big Data called?

MapReduce can be easily understood by skilled programmers due to its procedural nature.

The ________ Node in a Hadoop cluster provides client information on where in the cluster particular data is stored and if any nodes fail.