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DASCA Senior Data Scientist Sample Questions:

1. Which of these are open-source column-oriented databases?

A) Cassandra
B) Both A and B
C) All of the above
D) Accumulo
E) HBase

2. Spark should be used when:

A) Data is massive
B) Data is not massive
C) Both A and B
D) None of the above

3. What is Scrum?

A) Agile is a subset of Scrum
B) None of the above
C) Scrum and Agile are the same
D) Scrum is a subset of Agile

4. Which of the following is NOT Structured data?

A) CSV files
B) XML
C) Data tables
D) None of the above
E) Relational databases

5. Example of amortized performance is:

A) MapReduce dictionaries
B) Hadoop dictionaries
C) Python dictionaries
D) HDFS dictionaries
E) All of the above

Solutions: