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E20-026 Real Exam Questions

Enterprise Storage Networking Specialist Exam

163 questions available · Page 1 of 17

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Question 1 Single choice

You are studying the behavior of a population, and you are provided with multidimensional data at the individual level. You have identified four specific individuals who are valuable to your study, and would like to find all users who are most similar to each individual.

Which algorithm is the most appropriate for this study?

  1. A

    K-means clustering

  2. B

    Linear regression

  3. C

    Association rules

  4. D

    Decision trees

Show answer and explanation

Correct answer: A

Question 2 Single choice

Which word or phrase completes the statement? Structured data is to OLAP data as quasi-structured data is to____

  1. A

    Clickstream data

  2. B

    XML data

  3. C

    Text documents

  4. D

    Image files

Show answer and explanation

Correct answer: A

Question 3 Single choice

A disk drive manufacturer has a defect rate of less than 1.0% with 98% confidence. A quality assurance team samples 1000 disk drives and finds 14 defective units.

Which action should the team recommend?

  1. A

    The manufacturing process should be inspected for problems.

  2. B

    A larger sample size should be taken to determine if the plant is functioning properly

  3. C

    A smaller sample size should be taken to determine if the plant is functioning properly

  4. D

    The manufacturing process is functioning properly and no further action is required.

Show answer and explanation

Correct answer: A

Question 4 Single choice

In a Student's t-test, what is the meaning of the p-value?

  1. A

    it is the area under the appropriate tails of the Student's distribution

  2. B

    it is the "power" of the Student's t-test

  3. C

    it is the mean of the distribution for the null hypothesis

  4. D

    it is the mean of the distribution for the alternate hypothesis

Show answer and explanation

Correct answer: A

Question 5 Single choice

A disk drive manufacturer has a defect rate of less than 1.5% with 98% confidence. A quality assurance team samples 1000 disk drives and finds 14 defective units.

Which action should the team recommend?

  1. A

    The manufacturing process is functioning properly and no further action is required

  2. B

    A larger sample size should be taken to determine if the plant is operating correctly

  3. C

    A smaller sample size should be taken to determine if the plant is operating correctly

  4. D

    There is a flaw in the quality assurance process and the sample should be repeated

Show answer and explanation

Correct answer: A

Question 6 Single choice

Refer to the exhibit.
You have created a density plot of purchase amounts from a retail website as shown.

What should you do next?

  1. A

    Recreate the plot using the barplot() function

  2. B

    Use the rug() function to add elements to the plot

  3. C

    Recreate the density plot using a log normal distribution of the purchase amount data

  4. D

    Reduce the sample size of the purchase amount data used to create the plot

Show answer and explanation

Correct answer: C

Question 7 Single choice

Refer to the Exhibit.
In the Exhibit.
For effective visualization, what is the chart's primary flaw?

  1. A

    The use of 3 dimensions.

  2. B

    The slanting of axis labels.

  3. C

    The location of the legend.

  4. D

    The order of the columns.

Show answer and explanation

Correct answer: A

Question 8 Single choice

Which key role for a successful analytic project can consult and advise the project team on the value of end results and how these will be used on a day-to-day basis?

  1. A

    Business User

  2. B

    Project Manager

  3. C

    Data Scientist

  4. D

    Business Intelligence Analyst

Show answer and explanation

Correct answer: A

Question 9 Single choice

When would you prefer a Naive Bayes model to a logistic regression model for classification?

  1. A

    When you are using several categorical input variables with over 1000 possible values each.

  2. B

    When you need to estimate the probability of an outcome,not just which class it is in.

  3. C

    When all the input variables are numerical.

  4. D

    When some of the input variables might be correlated.

Show answer and explanation

Correct answer: A

Question 10 Single choice

Which data type value is used for the observed response variable in a logistic regression model?

  1. A

    Any positive real number

  2. B

    Any integer

  3. C

    A binary value

  4. D

    Any real number

Show answer and explanation

Correct answer: C