Question 1
Which word or phrase completes the statement? Business Intelligence is to monitoring trends as Data Science is to ________ trends.
- A. Predicting
- B. Discarding
- C. Driving
- D. Optimizing
Show Answer
Correct Answer:
- C. Driving
- D. Optimizing
Free E20-007 Sample Questions — Data Science and Big Data Analytics
Data Science and Big Data Analytics (E20-007) is a expert-level Dell certification exam. The blueprint splits the exam across 5 domains, starting with Data Science Fundamentals, Big Data Analytics, Data Processing. On exam day you face around 39 questions in 90 minutes, in formats such as multiple choice. The 10 questions below are free samples written to match that style: answer each one first, then reveal the correct answer and note which topics you miss. The E20-007 is rated medium in difficulty, and most candidates prepare with at least 24 months of hands-on experience. Because every answer is revealed in place, you can work through the whole set without leaving this page. Work through all 10 samples before deciding whether to buy the full 39+ question PDF.
- 10 free questions
- pass mark 800/1000
- 90 min
- $300 official fee
- blueprint v2023
- Every free question shows the correct answer
- Questions follow the official 5-domain blueprint
- No account or email required
- 39+ questions in the full PDF
Looking for more? Click here to get the full PDF with 39+ practice questions for $5 for offline study and deeper preparation.
Question 2
Data visualization is used in the final presentation of an analytics project. For what else is this technique commonly used?
- A. Data exploration
- B. Descriptive statistics
- C. ETLT
- D. Model selection
Show Answer
Correct Answer:
A. Data exploration
Question 3
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
Show Answer
Correct Answer:
- C. Howl
- D. HBase
Question 4
Which type of numeric value does a logistic regression model estimate?
- A. Probability
- B. p-value
- C. Any integer
- D. Any real number
Show Answer
Correct Answer:
D. Any real number
Question 5
The web analytics team uses Hadoop to process access logs. They now want to correlate this data with structured user data residing in their massively parallel database. Which tool should they use to export the structured data from Hadoop?
- A. Sqoop
- B. Pig
- C. Chukwa
- D. Scribe
Show Answer
Correct Answer:
D. Scribe
Question 6
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
Show Answer
Correct Answer:
B. Leverage of the rules is low
Question 7
You are testing two new weight-gain formulas for puppies. The test gives the results: Control group: 1% weight gain - Formula A. 3% weight gain - Formula B. 4% weight gain - A one-way ANOVA returns a p-value = 0.027 What can you conclude?
- A. Either Formula A or Formula B is effective at promoting weight gain
- B. Formula B is more effective at promoting weight gain than Formula A
- C. Formula A and Formula B are both effective at promoting weight gain
- D. Formula A and Formula B are about equally effective at promoting weight gain
Show Answer
Correct Answer:
A. Either Formula A or Formula B is effective at promoting weight gain
Question 8
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. Naïve Bayesian classifier
- B. Linear regression
- C. Logistic regression
- D. K-means clustering
Show Answer
Correct Answer:
D. K-means clustering
Question 9
Review the following code: SELECT pn, vn, sum(prc*qty) FROM sale - GROUP BY CUBE(pn, vn) ORDER BY 1, 2, 3; Which combination of subtotals do you expect to be returned by the query?
- A. (pn, vn)
- B. ( (pn, vn), (pn) )
- C. ( (pn, vn) , (pn), (vn) )
- D. ( (pn, vn) , (pn), (vn) , ( ) )
Show Answer
Correct Answer:
D. ( (pn, vn) , (pn), (vn) , ( ) )
Question 10
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
Show Answer
Correct Answer:
A. where all subtotals and grand totals are to be included in the output
E20-007 sample questions FAQ
Are these E20-007 sample questions from the real exam?
No. They are original practice questions written to match the format and topic mix of the Data Science and Big Data Analytics exam, which contains around 39 questions. Treat them as representative practice, not leaked exam content.
How many free E20-007 sample questions do I get?
This page includes 10 questions, each with its correct answer you can reveal in place. The full study PDF expands that to 39+ questions.
Do the sample questions include the correct answers?
Yes. Open the answer panel under each question to see which option is correct. Answer first, then reveal, so the set works as a self-check rather than a reading exercise.
Is 10 sample questions enough to pass the E20-007?
Not on its own. Use the samples to find weak topics, revise them against the official domains, then work through the full 39+ question set under timed conditions before booking the exam.
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