EMC EMC Certifications E20-065 Questions & Answers

• Question 61:

  Which is NOT a tenet of the Apache Pig Philosophy?

  A. It must be easily commanded

  B. Any type of data can be processed

  C. Hadoop is required

  D. Data should be processed quickly

  Correct Answer: D

• Question 62:

  What is a property of a good color model for ordinal data?

  A. Uses a rainbow-like color map for distinction of categories

  B. Uses a rainbow-like color map for ease of display and printing

  C. Uses perceptually ordinal colors with just-noticeable increments

  D. Uses perceptually ordinal colors with linear, perceptual increments

  Correct Answer: D

• Question 63:

  Which HDFS feature protects against user errors causing accidental loss of data?

  A. Encryption

  B. Replication

  C. Namenode federation

  D. Snapshots

  Correct Answer: B

• Question 64:

  What process must address acoustic ambiguity in NLP?

  A. Part-of-speech tagging

  B. Word sense disambiguation

  C. Speech recognition

  D. Discourse

  Correct Answer: C

• Question 65:

  A data engineer is asked to process several large datasets using MapReduce. Upon initial inspection the engineer realizes that there are complex interdependencies between the datasets.

  Why is this a problem?

  A. MapReduce works best on unstructured data

  B. There is no problem; MapReduce accommodates all the data

  C. MapReduce can only parse one file at a time.

  D. MapReduce is not ideal when the processing of one dataset depends on another.

  Correct Answer: D

• Question 66:

  Given an input vector of features, a Random Forests model performs a classification task and ends in a tie. How does the model handle this outcome?

  A. The model will be rebuilt

  B. A winner is chosen at random

  C. The tree that caused the tie is discarded

  D. One more tree is added to the forest

  Correct Answer: B