DASCA SDS real exam prep : Senior Data Scientist

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DASCA SDS Exam Syllabus Topics:

DASCA Senior Data Scientist Sample Questions:

1. What is TRUE for "rehashing"?

A) Key/value pairs from the original table can be inserted into the new, larger one
B) All of the above
C) Allocate a new, larger hash table in memory
D) It requires a new hash function, which maps values into a larger range of integers
E) Both A and B

2. Which of the following errors refers to the wrong negation of a true null hypothesis?

A) Type II Error
B) Hypothesis Error
C) Type I Error
D) None of the above
E) Logical Error

3. Which of the following is the most important part of Hadoop?

A) Both B and C
B) MapReduce Framework
C) Hadoop Distributed File System (HDFS)
D) Spark Framework
E) Both A and B

4. Spark is written in:

A) Python
B) C++
C) Java
D) C
E) Scala

5. Designing an algorithm to play chess is usually an example of which type of machine learning?

A) Pattern density
B) Reinforcement learning
C) Supervised learning
D) Clustering

Solutions: