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DASCA Senior Data Scientist Sample Questions:

1. Machine learning can be used in:

A) Fraud detection
B) All of the above
C) Real-time ads on web pages and mobile devices
D) Pattern and image recognition
E) Web search results

2. Which of the following is NOT used to implement Agile?

A) Scrum
B) Kanban
C) Extreme Programming (XP)
D) Six Sigma

3. JSON takes hierarchical data structures and serializes them into:

A) Both A and B
B) Plain string format
C) Plain text format
D) None of the above
E) Any desired format

4. 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 50 times faster in memory and 5 times faster on disk in comparison to the traditional Hadoop MapReduce
C) 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
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

5. HDFS supports which quotas?

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

Solutions: