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DASCA Senior Data Scientist Sample Questions:

1. Which of the following is correct for Markov chain?

A) Both B and C
B) A Markov chain is a sequence of random variables X1, X2
C) A Markov chain is the state of a system at sequential points in time
D) Both A and B
E) A Markov chain is a sequence of fixed variables X1, X2

2. Which of the following is correct about customer lifetime value (CLTV)?
i. Most organizations determine the current customer lifetime value (CLTV) based on historic sales over past
12 to 18 months
ii. The goal of the CLTV score is to help marketing and store personnel to determine the "value" of a customer

A) Only i
B) Both i and ii
C) Only ii

3. Which of the following is NOT a correct situation to use Agile?

A) When clients/stakeholders need to be able to change the scope
B) When the final product isn't clearly defined
C) None of the above
D) When changes need to be implemented during the entire process

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

A) Test-driven development and model-driven development
B) Agile
C) Waterfall
D) Promise-based algorithms

5. HDFS supports which quotas?

A) None of the above
B) Name quotas
C) Both A and B
D) Space quotas

Solutions: