EMC 자격증 E20-007 시험문제와 답

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EMC인증 E20-007덤프로EMC시험을 패스,하지 못하셨다구요? 최선을 다했는데도 실패하였다는 말은 영원히 하지마세요. EMC인증 E20-007시험을 패스하는 방법은 많고도 많습니다. ITExamDump의EMC인증 E20-007덤프로 시험에 다시 도전해보세요. ITExamDump의EMC인증 E20-007덤프는 착한 가격에 100%에 달하는 적중율과 패스율을 보장해드립니다. 시험에서 불합격성적표를 받으시면 덤프구매시 지불한 덤프비용을 환불처리해드립니다. ITExamDump의EMC인증 E20-007덤프로 시험패스를 꿈꿔보세요.

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시험 번호/코드: E20-007

시험 이름: EMC (Data Science and Big Data Analytics)

만약 아직도EMC E20-007인증시험 위하여 많은 시간과 정력을 소모하며 열심히 공부하고 있습니까? 아직도 어덯게하면EMC E20-007인증시험을 빠르게 취득할 수 있는 방법을 못찿고 계십니까? 지금ITExamDump에서EMC E20-007인증시험을 안전하게 넘을 수 있도록 대책을 내드리겠습니다. 아주 신기한 효과가 있을 것입니다.

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E20-007 덤프무료샘플다운로드하기: http://www.itexamdump.com/E20-007.html

NO.1 Which data asset is an example of quasi-structured data.?
A. Webserver log
B. XML data file
C. Database table
D. News article
Answer: A

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NO.2 What would be considered "Big Data"?
A. An OLAP Cube containing customer demographic information about 100,000,000 customers
B. Daily Log files from a web server that receives 100,000 hits per minute
C. Aggregated statistical data stored in a relational database table
D. Spreadsheets containing monthly sales data for a Global 100 corporation
Answer: B

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NO.3 In which lifecycle stage are test and training data sets created?
A. Model building
B. Model planning
C. Discovery
D. Data preparation
Answer: A

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NO.4 Under which circumstance do you need to implement N-fold cross-validation after creating a
regression model?
A. There is not enough data to create a test set.
B. The data is unformatted.
C. There are missing values in the data.
D. There are categorical variables in the model.
Answer: A

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NO.5 Your colleague, who is new to Hadoop, approaches you with a question. They want to know how best
to access their data. This colleague has a strong background in data flow languages and programming.
Which query interface would you recommend?
A. Pig
B. Hive
C. Howl
D. HBase
Answer: A

EMC   E20-007   E20-007기출문제   E20-007

NO.6 When creating a presentation for a technical audience, what is the main objective?
A. Show that you met the project goals
B. Show how you met the project goals
C. Show if the model will meet the SLA
D. Show the technique to be used in the production environment
Answer: B

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NO.7 A data scientist plans to classify the sentiment polarity of 10, 000 product reviews collected from the
Internet. What is the most appropriate model to use? Suppose labeled training data is available.
A. Na ve Bayesian classifier
B. Linear regression
C. Logistic regression
D. K-means clustering
Answer: A

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NO.8 You are using MADlib for Linear Regression analysis. Which value does the statement return?
SELECT (linregr(depvar, indepvar)).r2 FROM zeta1;
A. Goodness of fit
B. Coefficients
C. Standard error
D. P-value
Answer: A

EMC dump   E20-007   E20-007자료   E20-007인증

NO.9 In R, functions like plot() and hist() are known as what?
A. generic functions
B. virtual methods
C. virtual functions
D. generic methods
Answer: B

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NO.10 You are using the Apriori algorithm to determine the likelihood that a person who owns a home has a
good credit score. You have determined that the confidence for the rules used in the algorithm is > 75%.
You calculate lift = 1.011 for the rule, "People with good credit are homeowners". What can you determine
from the lift calculation?
A. Support for the association is low
B. Leverage of the rules is low
C. The rule is coincidental
D. The rule is true
Answer: C

EMC dump   E20-007   E20-007   E20-007시험문제   E20-007

NO.11 Consider a database with 4 transactions:
Transaction 1: {cheese, bread, milk}
Transaction 2: {soda, bread, milk}
Transaction 3: {cheese, bread}
Transaction 4: {cheese, soda, juice}
The minimum support is 25%. Which rule has a confidence equal to 50%?
A. {bread,milk} => {cheese}
B. {bread} => {milk}
C. {juice} => {soda}
D. {bread} => {cheese}
Answer: D

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NO.12 Consider a database with 4 transactions:
Transaction 1: {cheese, bread, milk}
Transaction 2: {soda, bread, milk}
Transaction 3: {cheese, bread}
Transaction 4: {cheese, soda, juice}
You decide to run the association rules algorithm where minimum support is 50%. Which rule has a
confidence at least 50%?
A. {cheese} => {bread}
B. {juice} => {cheese}
C. {milk} => {soda}
D. {soda} => {milk}
Answer: A

EMC   E20-007   E20-007   E20-007시험문제   E20-007   E20-007

NO.13 Your company has 3 different sales teams. Each team's sales manager has developed incentive offers
to increase the size of each sales transaction. Any sales manager whose incentive program can be
shown to increase the size of the average sales transaction will receive a bonus.
Data are available for the number and average sale amount for transactions offering one of the incentives
as well as transactions offering no incentive.
The VP of Sales has asked you to determine analytically if any of the incentive programs has resulted in a
demonstrable increase in the average sale amount. Which analytical technique would be appropriate in
this situation?
A. One-way ANOVA
B. Multi-way ANOVA
C. Student's t-test
D. Wilcoxson Rank Sum Test
Answer: A

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NO.14 What does the R code
z <- f[1:10, ]
do?
A. Assigns the first 10 rows of f to the vector z
B. Assigns the 1st 10 columns of the 1st row of f to z
C. Assigns a sequence of values from 1 to 10 to z
D. Assigns the 1st 10 columns to z
Answer: A

EMC   E20-007시험문제   E20-007   E20-007자료   E20-007

NO.15 Which word or phrase completes the statement? Data-ink ratio is to data visualization as __________ .
A. Confusion matrix is to classifier
B. Data scientist is to big data
C. Seasonality is to ARIMA
D. K-means is to Naive Bayes
Answer: A

EMC dump   E20-007   E20-007   E20-007   E20-007인증

NO.16 Which type of numeric value does a logistic regression model estimate?
A. Probability
B. A p-value
C. Any integer
D. Any real number
Answer: A

EMC   E20-007   E20-007자격증   E20-007

NO.17 What is an appropriate data visualization to use in a presentation for an analyst audience?
A. Pie chart
B. Area chart
C. Stacked bar chart
D. ROC curve
Answer: D

EMC   E20-007덤프   E20-007   E20-007

NO.18 When would you use GROUP BY ROLLUP clause in your OLAP query?
A. where all subtotals and grand totals are to be included in the output
B. where only the subtotals are to be included in the output
C. where only the grand totals are to be included in the output
D. where only specific subtotals and grand totals for a combination of variables are to be included in the
output
Answer: A

EMC기출문제   E20-007   E20-007   E20-007

NO.19 In data visualization, what is used to focus the audience on a key part of a chart?
A. Emphasis colors
B. Detailed text
C. Pastel colors
D. A data table
Answer: A

EMC   E20-007   E20-007   E20-007인증

NO.20 The web analytics team uses Hadoop to process access logs. They now want to correlate this data
with structured user data residing in a production single-instance JDBC database. They collaborate with
the production team to import the data into Hadoop. Which tool should they use?
A. Sqoop
B. Pig
C. Chukwa
D. Scribe
Answer: A

EMC   E20-007   E20-007시험문제   E20-007

IT인증시험을 쉽게 취득하는 지름길은ITExamDump에 있습니다. ITExamDump의EMC인증 E20-007덤프로 시험준비를 시작하면 성공에 가까워집니다. EMC인증 E20-007덤프는 최신 시험문제 출제방향에 대비하여 제작된 예상문제와 기출문제의 모음자료입니다. EMC인증 E20-007덤프는 시험을 통과한 IT업계종사자분들이 검증해주신 세련된 공부자료입니다. ITExamDump의EMC인증 E20-007덤프를 공부하여 자격증을 땁시다.