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Exam 14: Big Data Analytics and NoSQL

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Question 21

True/False

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A column-family database is a NoSQL database model that organizes data in key-value pairs with keys mapped to a set of columns in the value component.

A) True
B) False

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Question 22

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___ is a tool for converting data back and forth between a relational database and the HDFS.

A) Flume
B) Pig
C) Sqoop
D) Impala

E) B) and C)
F) None of the above

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Question 23

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A query in a graph database is called a(n)_____.

When using MapReduce,best practices suggest that the number of mappers on a given node should be:

Flume is a tool for converting data back and forth between a relational database and the HDFS.

is a continuous spectrum of knowledge acquisition that goes from discovery to explanation to prediction..

Document databases group documents into logical groups called:

The end user decides what techniques to apply to the data when using the _____ mode of data mining

Most organizations that use Hadoop also use a set of other related products that interact and complement each other to produce an entire ______ of applications and tools.

Most NoSQL products run only in a Linux or Unix environment.

Within Hadoop, can transfer data in both directions - into and out of HDFS.

A method of text analysis that attempts to determine if a statement conveys a positive,negative,or neutral attitude is referred to as ___ analysis.

When using a HDFS,a heartbeat is sent every _____ to notify the name node that the data mode is still available.

Explanatory analytics uses predictive analytics as a stepping stone to create explanatory models.

Hive is a good choice for jobs that require a small subset of data to be returned very quickly.

Relational databases rely on unstructured data.

Discuss the need for a Hadoop ecosystem and identify the key components.

A reduce function takes a collection of key-value pairs with the same key value and summarizes them into a single result.

Characteristics that are important in working with data in the relational database model also apply to Big Data.

In the context of Big Data,_____ relates to differences in meaning.