Free DASCA SDS Practice Test & Real Exam Questions

Exam Code/Number: SDS
Exam Name/Title: Senior Data Scientist
Certification Provider: DASCA
Corresponding Certification: DASCA Data Scientist

Exam Questions: 87
Updated On: Aug 15, 2026

Question #10

Which of the following can be classified as factor analysis in machine learning?

A. Both A and B

B. Confirmatory factor analysis

C. None of the above

D. Exploratory factor analysis

Discussion 0

Correct Answer: A Vote an answer

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Question #11

What is Scrum?

A. Agile is a subset of Scrum

B. Scrum is a subset of Agile

C. Scrum and Agile are the same

D. None of the above

Discussion 0

Correct Answer: B Vote an answer

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Question #12

Which of the following is TRUE for Business Metamorphosis?

A. Business Metamorphosis exercise can uncover Big Data requirements around decisions, analytics and data sources that can be leveraged to transform or metamorphose your organization's business model

B. The Business Metamorphosis phase helps drive an organization's core business model through the analytic insights gathered as the organization traverses the Big Data Business Model Maturity Index

C. The Business Metamorphosis phase is where organizations integrate the insights that they captured about their customers' usage patterns, product performance behaviors, and overall market trends to transform their business models

D. All of the above

E. Both A and C

Discussion 0

Correct Answer: D Vote an answer

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Question #13

The DevOps movement is an outgrowth of which of the following software development methodologies?

A. Waterfall

B. Promise-based algorithms

C. Test-driven development and model-driven development

D. Agile

Discussion 0

Correct Answer: D Vote an answer

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Question #14

What is Scrumban?

A. It is Scrum

B. It combines the principles of Scrum and Kanban into a pull-based system

C. It combines the principles of Scrum and Kanban into a push-based system

D. It is Kanban

Discussion 0

Correct Answer: B Vote an answer

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Question #15

Tar is an example of:

A. ARV file format

B. Archive file format

C. CSV file format

D. None of the above

E. Text file format

Discussion 0

Correct Answer: B Vote an answer

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Question #16

Image files can be broken down into two broad categories:
i. Rasterized
ii. Vectorized
iii. Sectorized

A. ii, iii

B. i, iii

C. i, ii

D. None of the above

Discussion 0

Correct Answer: C Vote an answer

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Question #17

Which of the following is an example of NLP?

A. Finding which text documents are about similar topics

B. Using Twitter to assess public sentiment

C. All of the above

D. Both A and C

E. Flagging e-mails as spam

Discussion 0

Correct Answer: C Vote an answer

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Question #18

What is TRUE for "rehashing"?

A. Both A and B

B. Allocate a new, larger hash table in memory

C. All of the above

D. It requires a new hash function, which maps values into a larger range of integers

E. Key/value pairs from the original table can be inserted into the new, larger one

Discussion 0

Correct Answer: C Vote an answer

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