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DSCI 5350 EXAM 1 2025 WITH ANSWERS THAT ARE 100% CORRECT
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DSCI 5350 Exam 1 Review – 2025 Edition If you're preparing for DSCI 5350, this Exam 1 guide with 100% correct answers is a must-have. It’s concise, comprehensive, and covers all key topics thoroughly, making it an invaluable resource for mastering the material. Whether you're reviewing decisio...

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  • November 19, 2024
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  • 2024/2025
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DSCI 5350 EXAM 1 2025 WITH ANSWERS THAT ARE
100% CORRECT


The 3Vs in the definition of Big Data stand for:


A: Volume, Value, Veracity
B: Volume, Variety, Value
C: Volume, Variety, Velocity - Precise Answer ✔✔C: Volume,
Variety, Velocity


The four stages in Big Data adoption identified by the 2012
IBM/University of Oxford report DO NOT include:


A: Educate
B: Expect
C: Engage
D: Execute - Precise Answer ✔✔B: Expect


The main sponsor(s) in the "Execute" stage of big data adoption
is/are:


A: The customers

,B: The analysts and mid-level managers
C: The Chief Information Officer (CIO)
D: The Chief Executive Officer (CEO) - Precise Answer ✔✔D:
The Chief Executive Officer (CEO)


The main obstacle in the "Execute" stage of big data adoption is:


A: Lack of technical skills
B: Lack of management focus
C: Inability to understand how to use big data
D: Inability to understand the market - Precise Answer ✔✔A:
Lack of technical skills


Which one of the following analytics practices corresponds to
the NEW approach in big data analytics?


A: Analyze small, clean subsets of data
B: Analyze all data, even if they are not clean
C: Start with a hypothesis and test on selected data
D: Analyze data after they have been organized in a data
warehouse - Precise Answer ✔✔B: Analyze all data, even if
they are not clean

,Which function should be used to calculate the total of all values
in a column?


A: Count
B: Sum
C: Total - Precise Answer ✔✔B: Sum


Based on the following table description, use SQL to list the
complete STUDENT table.
STUDENT[StudentID, FirstName, LastName, Street, City,
State, Zip]


A: SELECT all from STUDENT;
B: LIST all from STUDENT;
C: SELECT * from STUDENT; - Precise Answer ✔✔C:
SELECT * from STUDENT;


Traditional ("existing") Data Analytics architecture is designed
based on the assumption that we already know the questions we
are trying to answer


TRUE

, FALSE - Precise Answer ✔✔TRUE


Which one of the following is NOT a characteristic of Hadoop?


A: Distributed
B: Scalable
C: Fault-tolerant
D: Proprietary - Precise Answer ✔✔D: Proprietary


In the Hadoop ecosystem, which application is designed for
collecting data from network sources?
A: Flume
B: Sqoop
C: HBase
D: Zookeeper - Precise Answer ✔✔A: Flume


What is the MapReduce strategy for executing complex analytic
tasks?


A: Relies on sophisticated hardware that accelerates
computation speed

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