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E20-065 | What are two visualization tools used…

Question: 11

What are two visualization tools used for trivariate data?

A. Scatter plot matrix
B. Hexbin plot and heatmap
C. Scatter plot matrix and density plot
D. Scatter plot matrix and heatmap

Answer: B

E20-065 | Why would a company decide to use HBase…

Question: 10

Why would a company decide to use HBase to replace an existing relational database?

A. It is required for performing ad-hoc queries.
B. Varying formats of input data requires columns to be added in real time.
C. The company’s employees are already fluent in SQL.
D. Existing SQL code will run unchanged on HBase.

Answer: A

E20-065 | How does Latent Dinchlet Allocation …

Question: 9

How does Latent Dinchlet Allocation (LDA) interpret a document?

A. As a single-predefined topic
B. As a mixture of pre-defined topics
C. As having a mixture of sentiments
D. As having a single pre-defined sentiment

Answer: B

E20-065 | What is an ideal use case for HDFS…

Question: 7

What is an ideal use case for HDFS?

A. Storing files that are updated frequently
B. Storing files that are written once and read many times
C. Storing results between Map steps and Reduce steps
D. Storing application files in memory

Answer: B

E20-065 | What is a property of a good color model…

Question: 6

What is a property of a good color model for ordinal data?

A. Uses a rainbow-like color map for distinction of categories
B. Uses a rainbow-like color map for ease of display and printing
C. Uses perceptually ordinal colors with just-noticeable increments
D. Uses perceptually ordinal colors with linear, perceptual increments

Answer: D

E20-065 | The naive Bayer classifier is trained over 1600 movie…

Question: 5

The naive Bayer classifier is trained over 1600 movie reviews and then tested over 400 reviews.
Here is the resulting confusion matrix:
190 (TP) 10(FN)
80 (FP) 120(TN)
What are the precision, recall, and the F1-score values?

A. Precision0.95; Recall: 0704; F1-score: 0.809
B. Precision 0.613, Recall: 0.95, F1-score: 0.745
C. Precision 0.704, Recall: 0.95; F1-score: 0.809
D. Precision 0.95; Recall: 0.613; F1-score: 0.745

Answer: C

E20-065 | What is a characteristic of spark…

Question: 2

What is a characteristic of spark?

A. Unable to run map -> reduce execution plans
B. Supports applications written in Python, Java, and Scala
C. Less efficient processing small files than Hadoop MapReduce
D. Supports workflows that can return to previous work steps

Answer: B

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