Practice Free D-DS-FN-23 Exam Online Questions
Refer to the Exhibit.
In the Exhibit. For effective visualization, what is the chart’s primary flaw?
- A . The use of 3 dimensions.
- B . The slanting of axis labels.
- C . The location of the legend.
- D . The order of the columns.
How does an HBase data structure differ from an ANSI standard relational database management system (RDBMS)?
- A . HBase is challenged by sparse data;
ANSI standard RDBMS handles missing values well by using null fields - B . HBase supports a single table with no implicit join ability to other tables;
ANSI standard RDBMS supports multiple tables with join ability - C . HBase has strongly defined data columns;
ANSI standard RDBMS is more flexible with column definitions - D . HBase provides a wider variety of predefined data types for data;
ANSI standard RDBMS provides less variety
Which Hadoop service is responsible for requesting resources for, and monitoring the completion of, MapReduce processes?
- A . Application Manager
- B . NameNode
- C . Application Master
- D . DataNode
You have been assigned to do a study of the daily revenue effect of a pricing model of online transactions. When have you completed the analytics lifecycle?
- A . You have written documentation, and the code has been handed off to the Data Base Administrator and business operations.
- B . You have a completely developed model, and the results have shown statistically acceptable results.
- C . You have presented the results of the model to both the internal analytics team and the business owner of the project.
- D . You have a completely developed model based on both a sample of the data and the entire set of data available.
You have been assigned to do a study of the daily revenue effect of a pricing model of online transactions. When have you completed the analytics lifecycle?
- A . You have written documentation, and the code has been handed off to the Data Base Administrator and business operations.
- B . You have a completely developed model, and the results have shown statistically acceptable results.
- C . You have presented the results of the model to both the internal analytics team and the business owner of the project.
- D . You have a completely developed model based on both a sample of the data and the entire set of data available.
Refer to the graphic.
How would you run the MADlib kmeans function?
- A . INSERT INTO madlib.kmeans(‘km_sample’, ‘coords’, … );
- B . ./madlib kmeans run Cparallel Csource “km_sample.coords” …
- C . UPDATE madlib.kmeans SET centroids = madlib.kmeans(‘km_sample’, ‘coords’, … );
- D . SELECT * FROM madlib.kmeans(‘km_sample’, ‘coords’, … );
Which two tools support query languages that can be used with Hadoop?
- A . Pig and Howl
- B . Hbase and Howl
- C . Hive and Hbase
- D . Hive and Pig
In which phase of the data analytics lifecycle do Data Scientists spend the most time in a project?
- A . Discovery
- B . Data Preparation
- C . Model Building
- D . Communicate Results
Consider the following text:
"Aren’t you glad that there are all these toys. Are you taking any for the children?"
What is the term frequency for the word are in the text with both case folding and a tokenizer applied to punctuation?
- A . 0
- B . 1
- C . 2
- D . 3
Which functionality do regular expressions provide?
- A . text pattern matching
- B . underflow prevention
- C . increased numerical precision
- D . decreased processing complexity