Dell EMC E20-065 Exam Practice Test Instant Access

Question 1

In which step in the visualization lifecycle would you determine how the raw data is stored?

AVisualization Planning

BData Preparation

CVisualization Building

DDiscovery

Answer : B

Question 2

Which library is NOT part of the Apache Spark distribution?

AMLib

BNLTK

CGraphX

DSpark SQL

Answer : B

Question 3

Consider dataset that resides in HDFS. Which tool natively provides the capability to run a Random Forests model against this data?

AMahout

BPig

CHive

DHBase

Answer : A

Question 4

A marketing team creates a graph using a square for each data point, where the length of each side is set to the data value. The data values are 10 and 20.

What is the lie factor of the graph?

Answer : B

Question 5

What do lemmatization and stemming have in common?

AUse WordNet

BRemove common words in a natural language

CReduce the high dimensionality in text

DUse a set of heuristics

Answer : C

Question 6

What best describes the meaning behind the phrase "Six Degrees of Separation'"?

AAbility to use about six hops to reach any other node in an extremely large social network

BErdos number of all scholars having written papers with Paul Erdos

CMaximum number of edges between nodes in a graph with a diameter of six

DTypical distance between nodes that are connected by triadic closure

Answer : A

Question 7

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?

APrecision0.95; Recall: 0704; F1-score: 0.809

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

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

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

Answer : C

Dell EMC E20-065 Data Scientist Advanced Analytics Specialist Exam Practice Test