Dell EMC E20-065 Exam Practice Test Instant Access

Question 1

Which library is NOT part of the Apache Spark distribution?

AMLib

BNLTK

CGraphX

DSpark SQL

Answer : B

Question 2

You are analyzing written transcripts of focus groups conducted on product X. You approach is to use TF-IDF for your analysis.

What combination of TF-IDF scores should you examine to ensure you only report on the most important terms?

AHigh TF score and high DF score

BHigh TF score and high IDF score

CHigh TF score and low IDF score

DLow TF score and low DF score

Answer : C

Question 3

Why would a company decide to use HBase to replace an existing relational database?

AIt is required for performing ad-hoc queries.

BVarying formats of input data requires columns to be added in real time.

CThe company's employees are already fluent in SQL.

DExisting SQL code will run unchanged on HBase.

Answer : A

Question 4

What is an intended application of the MapReduce framework?

AProcessing can be broken into smaller pieces

BProcessing a large number of small files

CProcessing in real time is required

DProcessing a small subset of data

Answer : A

Question 5

You conduct a TFIDF analysis on 3 documents containing raw text and derive TFIDF ("data", document y) = 1.908. You know that the term "data'' only appears in document 2.

What is the TF of ''data" in document 2?

A2 based on the following reasoning:
TFIDF = TF1DF = 1 908
You then know that IDF will equal LOG (32)=0.954
Therefore, TFIDF=TF*0.954 = 1.908
TF will then round to 2

B4 based on the following reasoning:
TFIDF = TF1DF = 1.908
You then know that IDF will equal LOG (3/1 )=0.477
Therefore, TFIDF=TF'0 477 = 1.908
TF will then round to 4

C6 based on the following reasoning:
TFIDF = TF1DF = 1.908
You then know that IDF will equal 3/1=3
Therefore, TFIDF=TF/3 = 1.908
TF will then round to 6

D11 based on the following reasoning:
TFIDF = TF1DF = 1908
You then know that IDF will equal LOG(3/2)=0.176
Therefore, TFIDF=TF'0.176 = 1.908
TF will then round to 11

Answer : B

Question 6

Which graph structure would best model the relationship between job seekers and employers?

ABipartite

BWeighted

CDirected acyclic

DRanked

Answer : A

Question 7

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

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