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DASCA Senior Data Scientist Sample Questions:

1. Which of the following is a Python library for fitting Bayesian networks to real data?

A) SCIMC
B) MCMC
C) PyMC
D) SciLib
E) MyLib

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

A) i, iii
B) i, ii
C) ii, iii
D) None of the above

3. Which of the following statements is correct?

A) 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
B) 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
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 100 times faster in memory and 10 times faster on disk in comparison to the traditional Hadoop MapReduce

4. Bernoulli random variable is a type of:

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

5. Data wrangling is the process of getting the data from:

A) Its modified meaning format into something suitable for more conventional analytics
B) Both A and B
C) Its raw format into something suitable for more conventional analytics
D) None of the above

Solutions: