Online Quiz 4
Using data to understand customers/clients and business operations to sustain and foster growth and profitability is Select one: a. now completely automated with no human intervention required. b. an increasingly challenging task for today's enterprises. c. essentially the same now as it has always been. d. easier with the advent of BI and Big Data.
b. an increasingly challenging task for today's enterprises.
Which Big Data approach promotes efficiency, lower cost, and better performance by processing jobs in a shared, centrally managed pool of IT resources? Select one: a. in-database analytics b. grid computing c. in-memory analytics d. appliances
b. grid computing
What is the Hadoop Distributed File System (HDFS) designed to handle? Select one: a. structured and semistructured non-relational data b. unstructured and semistructured non-relational data c. unstructured and semistructured relational data d. structured and semistructured relational data
b. unstructured and semistructured non-relational data
What is Big Data's relationship to the cloud? Select one: a. Only MapReduce works in the cloud; Hadoop does not. b. IBM's homegrown Hadoop platform is the only option. c. Amazon and Google have working Hadoop cloud offerings. d. Hadoop cannot be deployed effectively in the cloud just yet.
c. Amazon and Google have working Hadoop cloud offerings.
Data flows can be highly inconsistent, with periodic peaks, making data loads hard to manage. What is this feature of Big Data called? Select one: a. periodicity b. volatility c. inconsistency d. variability
d. variability
Big Data uses commodity hardware, which is expensive, specialized hardware that is custom built for a client or application. Select one: True False
False
Hadoop and MapReduce require each other to work. Select one: True False
False
In most cases, Hadoop is used to replace data warehouses. Select one: True False
False
Big Data is being driven by the exponential growth, availability, and use of information. Select one: True False
True
Despite their potential, many current NoSQL tools lack mature management and monitoring tools. Select one: True False
True
Hadoop was designed to handle petabytes and exabytes of data distributed over multiple nodes in parallel. Select one: True False
True
MapReduce can be easily understood by skilled programmers due to its procedural nature. Select one: True False
True
The term "Big Data" is relative as it depends on the size of the using organization. Select one: True False
True
In the Analyzing Disease Patterns from an Electronic Medical Records Data Warehouse case study, what was the analytic goal? Select one: a. determine differences in rates of disease in urban and rural populations b. determine if diseases are accurately diagnosed c. determine differences in rates of disease in males v. females d. determine probabilities of diseases that are comorbid
a. determine differences in rates of disease in urban and rural populations
Companies with the largest revenues from Big Data tend to be Select one: a. the largest computer and IT services firms. b. small computer and IT services firms. c. pure open source Big Data firms. d. non-U.S. Big Data firms.
a. the largest computer and IT services firms.
A newly popular unit of data in the Big Data era is the petabyte (PB), which is Select one: a. 1012 bytes. b. 1015 bytes. c. 1018 bytes. d. 109 bytes.
b. 1015 bytes.
All of the following statements about MapReduce are true EXCEPT Select one: a. MapReduce handles parallel programming. b. MapReduce runs without fault tolerance. c. MapReduce is a general-purpose execution engine. d. MapReduce handles the complexities of network communication.
b. MapReduce runs without fault tolerance.
Which of the following sources is likely to produce Big Data the fastest? Select one: a. online customers b. RFID tags c. cashiers d. order entry clerks
b. RFID tags
In the financial services industry, Big Data can be used to improve Select one: a. customer service. b. both A & B. c. decision making. d. regulatory oversight.
b. both A & B.
In a Hadoop "stack," what node periodically replicates and stores data from the Name Node should it fail? Select one: a. substitute node b. backup node c. secondary node d. slave node
c. secondary node
Traditional data warehouses have not been able to keep up with Select one: a. expert systems that run on them. b. OLAP. c. the variety and complexity of data. d. the evolution of the SQL language.
c. the variety and complexity of data.
How does Hadoop work? Select one: a. It integrates Big Data into a whole so large data elements can be processed as a whole on multiple computers. b. It breaks up Big Data into multiple parts so each part can be processed and analyzed at the same time on one computer. c. It integrates Big Data into a whole so large data elements can be processed as a whole on one computer. d. It breaks up Big Data into multiple parts so each part can be processed and analyzed at the same time on multiple computers.
d. It breaks up Big Data into multiple parts so each part can be processed and analyzed at the same time on multiple computers.
Allowing Big Data to be processed in memory and distributed across a dedicated set of nodes can solve complex problems in near-real time with highly accurate insights. What is this process called? Select one: a. in-database analytics b. appliances c. grid computing d. in-memory analytics
d. in-memory analytics
In the Alternative Data for Market Analysis or Forecasts case study, satellite data was NOT used for Select one: a. tracking agricultural estimates. b. monitoring activity at factories. c. evaluating retail traffic. d. monitoring individual customer patterns.
d. monitoring individual customer patterns.
Under which of the following requirements would it be more appropriate to use Hadoop over a data warehouse? Select one: a. ANSI 2003 SQL compliance is required b. online archives alternative to tape c. analysis of provisional data d. unrestricted, ungoverned sandbox explorations
d. unrestricted, ungoverned sandbox explorations
