Dell D-DS-FN-23 Exam Questions Instant Access

Question 1

What data asset is an example of quasi-structured data?

AExcel file

BClickstream data

CRelational database table

DComma-separated value file

Answer : A

Question 2

Which analytic technique would be appropriate to estimate home sale price in U.S. dollars as a function of square footage, number of bedrooms, and lot size?

ATime series analysis

BLinear regression

CNaive Bayesian classification

DK-means clustering

Answer : B

Question 3

A logistic regression model is built to determine the probability of a credit card borrower defaulting on a credit loan. A threshold value of 0.3 is selected. Which statement can be used to predict a borrower will default?

AIf probability > 0.1, then predict the borrower will default

BIf probability < 0.1, then predict the borrower will default

CIf probability > 0.3, then predict the borrower will default

DIf probability < 0.3, then predict the borrower will default

Answer : C

Question 4

In addition to quantitative and technical skills, what is a key aspect of the profile of a data scientist?

AProject management and administrative skills

BProficient in Microsoft Project and Excel

CSkeptical and critical thinking

DAccounting and regulatory skills

Answer : C

Question 5

MapReduce is designed to process data in which way?

AA few large files split into blocks processed in parallel across multiple machines

BMany small files processed serially on one machine

CA few large files split into blocks processed serially on one machine

DMany small files processed in parallel across multiple machines

Answer : A

Question 6

In which programming language is Hadoop written?

AC++

BScala

CJava

DPython

Answer : C

Question 7

What does a branch represent in a decision tree?

AOutcome of a test on a variable

BOutcome of all prior decisions

CRoot of the tree

DClass label for the decision tree

Answer : A

Dell Certified Data Science Foundations D-DS-FN-23 Exam Questions