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VCE
Which characteristic applies mainly to Data Science as opposed to Business Intelligence?
A. Advanced analytical methods
B. Robust reporting
C. Focus on structured data
D. Data dashboards
You submit a MapReduce job to a Hadoop cluster and notice that although the job was successfully submitted, it is not completing. What should you do?
A. Ensure that the TaskTracker is running.
B. Ensure that the JobTracker is running
C. Ensure that the NameNode is running
D. Ensure that a DataNode is running
What describes the use of UNION clause in a SQL statement?
A. Operates on queries and potentially increases the number of rows
B. Operates on queries and potentially decreases the number of rows
C. Operates on tables and potentially decreases the number of columns
D. Operates on both tables and queries and potentially increases both the number of rows and columns