DSCI 5350 Exam 1 Questions With Explanations Of Answers Guaranteed Pass.
9 views 0 purchase
Module
DSCI
Institution
DSCI
The 3Vs in the definition of Big Data stand for:
A: Volume, Value, Veracity
B: Volume, Variety, Value
C: Volume, Variety, Velocity - correct answer C: Volume, Variety, Velocity
The four stages in Big Data adoption identified by the 2012 IBM/University of...
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 - correct 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) - correct 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 - correct 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 - correct 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 - correct 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; - correct 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 - correct answer TRUE
, Which one of the following is NOT a characteristic of Hadoop?
A: Distributed
B: Scalable
C: Fault-tolerant
D: Proprietary - correct 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 - correct answer A: Flume
What is the MapReduce strategy for executing complex analytic tasks?
A: Relies on sophisticated hardware that accelerates computation speed
B: Breaks them down into smaller, simpler tasks that can be executed in parallel
C: Loads the entire task onto one large machine that can fit all the data - correct answer
B: Breaks them down into smaller, simpler tasks that can be executed in parallel
In the HDFS architecture diagram below, entity W is a:
A. Node
B. Block
C. Name node - correct answer C. Name node
Apache Zookeeper is a:
A: Data manipulation language
B: Set of Web applications that interface with Hadoop
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller RealGrades. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for £12.00. You're not tied to anything after your purchase.
