Dell EMC E20-065 Exam Practice Test Instant Access

Question 1

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 2

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 3

What process must address acoustic ambiguity in NLP?

APart-of-speech tagging

BWord sense disambiguation

CSpeech recognition

DDiscourse

Answer : C

Question 4

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 5

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?

AThe model will be rebuilt

BA winner is chosen at random

CThe tree that caused the tie is discarded

DOne more tree is added to the forest

Answer : B

Question 6

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 7

What elements are needed to determine the time complexity of finding all the cliques of size k in social network analysis?

AEigenvector centrality and betwenness

BClique size and total number of nodes in the network

CNumber of edges in the network and centrality measure of the cliques

DClique size and betweenness centrality

Answer : B

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