31)In a Hadoop"stack, what node periodically replicates and stores data from the Name Node should it fail? A) backup no B)secondary node C)substitute node D)slave node Answer: B Diff: 2 Page Ref: 386 32)All of the following statements about Map Reduce are true EXCEPT A)MapReduce is a general-purpose execution engine B)Map Reduce handles the complexities of network communication C) MapReduce handles parallel programming D)MapReduce runs without fault tolerance Answer: D Diff: 2 Page Ref: 389 33)In a network analysis, what connects nodes? A)edges B)metrics C) paths D)visualizations Answer: A Diff: 2 Page Ref: 403 34)In the Analyzing Disease Patterns from an Electronic Medical Records Data Warehouse case study, what was the analytic goal? a)determine if diseases are accurately diagnosed B)determine probabilities of d iseases that are comorbid C)determine differences in rates of d isease in urban and rural populations D)determine differences in rates of disease in males v. females Answer: C Diff: 2 Page Ref: 402 35)Traditional data warehouses have not been able to keep up with A)the evolution of the SQL language B) the variety and complexity of data. C)expert systems that run on them D)OLAP Al nswer Diff: 2 Page Ref: 393 Copyright C 2018 Pearson Education, Inc5 Copyright © 2018 Pearson Education, Inc. 31) 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 Answer: B Diff: 2 Page Ref: 386 32) All of the following statements about MapReduce are true EXCEPT A) MapReduce is a general-purpose execution engine. B) MapReduce handles the complexities of network communication. C) MapReduce handles parallel programming. D) MapReduce runs without fault tolerance. Answer: D Diff: 2 Page Ref: 389 33) In a network analysis, what connects nodes? A) edges B) metrics C) paths D) visualizations Answer: A Diff: 2 Page Ref: 403 34) In the Analyzing Disease Patterns from an Electronic Medical Records Data Warehouse case study, what was the analytic goal? A) determine if diseases are accurately diagnosed B) determine probabilities of diseases that are comorbid C) determine differences in rates of disease in urban and rural populations D) determine differences in rates of disease in males v. females Answer: C Diff: 2 Page Ref: 402 35) Traditional data warehouses have not been able to keep up with A) the evolution of the SQL language. B) the variety and complexity of data. C) expert systems that run on them. D) OLAP. Answer: B Diff: 2 Page Ref: 393