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 E20-065 Dumps with Practice Exam Questions Answers

Questions: 66 questions

Last Update: Apr 14, 2024

EMC Certification Exam E20-065 has been designed to measure your skills in handling the technical tasks mentioned in the certification syllabus

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E20-065 Questions and Answers

Question # 1

What is a characteristic of spark?


Unable to run map -> reduce execution plans


Supports applications written in Python, Java, and Scala


Less efficient processing small files than Hadoop MapReduce


Supports workflows that can return to previous work steps

Question # 2

Which library is NOT part of the Apache Spark distribution?








Spark SQL

Question # 3

What do lemmatization and stemming have in common?


Use WordNet


Remove common words in a natural language


Reduce the high dimensionality in text


Use a set of heuristics

Question # 4

What is a typical use of a UDF in Pig?


Creating functionality outside of what is provided by the built-in functions


Providing Functional access to user-defined data in HDFS


Providing advanced analytics to Hadoop


Providing an interface from Pig to Microsoft Excel for easier data manipulation

Question # 5

The naive Bayer classifier is trained over 1600 movie reviews and then tested over 400 reviews.

Here is the resulting confusion matrix:

190 (TP) 10(FN)

80 (FP) 120(TN)

What are the precision, recall, and the F1-score values?


Precision0.95; Recall: 0704; F1-score: 0.809


Precision 0.613, Recall: 0.95, F1-score: 0.745


Precision 0.704, Recall: 0.95; F1-score: 0.809


Precision 0.95; Recall: 0.613; F1-score: 0.745