Exam 7: Big Data Concepts and Tools
Exam 1: An Overview of Business Intelligence,analytics,and Data Science70 Questions
Exam 2: Descriptive Analytics I: Nature of Data,statistical Modeling,68 Questions
Exam 3: Descriptive Analytics II: Business Intelligence and Data Warehousing70 Questions
Exam 4: Predictive Analytics I: Data Mining Process, methods, and Algorithms69 Questions
Exam 5: Predictive Analytics II: Text, web, and Social Media Analytics70 Questions
Exam 6: Prescriptive Analytics: Optimization and Simulation68 Questions
Exam 7: Big Data Concepts and Tools69 Questions
Exam 8: Future Trends,privacy and Managerial Considerations in Analytics68 Questions
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The ________ Node in a Hadoop cluster provides client information on where in the cluster particular data is stored and if any nodes fail.
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(Short Answer)
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Correct Answer:
Name
If you have many flexible programming languages running in parallel,Hadoop is preferable to a data warehouse.
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(True/False)
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Correct Answer:
True
Under which of the following requirements would it be more appropriate to use Hadoop over a data warehouse?
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(Multiple Choice)
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Correct Answer:
C
A newly popular unit of data in the Big Data era is the petabyte (PB),which is
(Multiple Choice)
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All of the following statements about MapReduce are true EXCEPT
(Multiple Choice)
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The ________ of Big Data is its potential to contain more useful patterns and interesting anomalies than "small" data.
(Short Answer)
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In-motion ________ is often overlooked today in the world of BI and Big Data.
(Short Answer)
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A job ________ is a node in a Hadoop cluster that initiates and coordinates MapReduce jobs,or the processing of the data.
(Short Answer)
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It is important for Big Data and self-service business intelligence to go hand in hand to get maximum value from analytics.
(True/False)
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________ speeds time to insights and enables better data governance by performing data integration and analytic functions inside the database.
(Short Answer)
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In the Salesforce case study,streaming data is used to identify services that customers use most.
(True/False)
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What are the differences between stream analytics and perpetual analytics? When would you use one or the other?
(Essay)
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In a Hadoop "stack," what node periodically replicates and stores data from the Name Node should it fail?
(Multiple Choice)
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Companies with the largest revenues from Big Data tend to be
(Multiple Choice)
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Traditional data warehouses have not been able to keep up with
(Multiple Choice)
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In the opening vignette,the Access Telecom (AT),built a system to better visualize customers who were unhappy before they canceled their service.
(True/False)
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Allowing Big Data to be processed in memory and distributed across a dedicated set of nodes can solve complex problems in near-real time with highly accurate insights.What is this process called?
(Multiple Choice)
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When considering Big Data projects and architecture,list and describe five challenges designers should be mindful of in order to make the journey to analytics competency less stressful.
(Essay)
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