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DASCA Senior Data Scientist Sample Questions:

1. The grid computing environment uses a middleware to:

A) None of the above
B) Both A and B
C) Divide computing resources
D) Combine computing resources

2. Bernoulli random variable is a type of:

A) Sometimes Discrete or sometimes Continuous random variable
B) Both A and B
C) Discrete random variable
D) Continuous random variable

3. Which of the following is TRUE for "By" analysis?

A) "By" analysis is used to create a collaborative technique to drive alignment between the business users and the data scientists to identify and brainstorm variables and metrics that might be better predictors of business performance.
B) "By" analysis is a technique by which business subject matter experts (SMEs) and the Data Science team could collaborate to uncover new variables and metrics that might be better predictors of business performance.
C) Both B and C
D) The "By" analysis technique reinforces the process of "thinking like a data scientist."
E) All of the above

4. Which of the following is NOT an example of the applications of neural networks?

A) Stock market prediction
B) Character recognition
C) None of the above
D) Image compression
E) Traveling salesman's problem

5. Which of the following statements is correct?

A) Apache claimed that Spark is able to run parallel jobs 1000 times faster in memory and 100 times faster on disk in comparison to the traditional Hadoop MapReduce
B) Apache claimed that Spark is able to run parallel jobs 100 times faster in memory and 10 times faster on disk in comparison to the traditional Hadoop MapReduce
C) Apache claimed that Spark is able to run parallel jobs 50 times faster in memory and 5 times faster on disk in comparison to the traditional Hadoop MapReduce
D) Apache claimed that Spark is able to run parallel jobs 10 times faster in memory and 100 times faster on disk in comparison to the traditional Hadoop MapReduce

Solutions: