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DASCA Senior Data Scientist Sample Questions:

1. Which of the following statements is correct?

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

2. Bernoulli random variable is a type of:

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

3. ElementTree sub-library gives us direct access to:

A) Delete tree of the XML
B) Parse tree of the XML
C) None of the above
D) Copy tree of the XML
E) Insert tree of the XML

4. The main purpose of a Statement Of Work (SOW) is to get:

A) What expectations are realistic
B) Everybody on the same page about what work should be done
C) What the priorities are
D) None of the above
E) All of the above

5. The grid computing environment uses a middleware to:

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

Solutions: