Introduction to IoT - Chapter 3 Chapter 3 Quiz

A business is analyzing sales information as the sales data is being generated from the point-of-sale (POS) machines. What type of data is captured and processed as the events happen?

transactional data

True of False? Structured data is easier to analyze and store than unstructured data.

true Unstructured data, in contrast to structured data, is generated in a freeform style and is more difficult to store and analyze.

Unstructured data is generated in 'freeform' style such as

tweets or audio files.

Which attribute of big data involves an exponential data growth rate?

velocity The characteristic of velocity refers to the amount of data that is growing exponentially fast.

What type of data is being collected when an organization is using spreadsheets and forms for data input?

structured data Structured data is created by applications that use 'fixed' format input such as spreadsheets.

An organization is concerned with the amount of sensor data that is being generated locally, analyzed in the cloud, and returned for processing at the local site. Which solution will keep the data closer to the source for preprocessing?

fog computing

What characterizes data management problems associated with big data storage?

generating and collecting data from multiple sources

Making data accessible to only authorized users addresses which data storage problem associated with big data?

security Stored data must be kept secure and only accessible by authorized users or it potentially loses its value.

What are three features of Hadoop? (Choose three.)

-automatic replication of data across clusters -uses HDFS as a fault tolerant file system -easily scalable cluster sizes

What is cloud computing?

a system of data centers or connected servers that provide anywhere/anytime access to data and applications

Which challenge of big data storage is characterized by the need to make data accessible from anywhere at anytime?

access

Which type of data can be used by a business to support managerial analysis tasks and organizational decision making?

analyzed data

What is the process of discovering patterns and relationships in large data sets in order to convert raw data into meaningful information?

data mining

True or False? Distributed data processing involves large databases being centrally processed by powerful mainframe computers and stored in giant disk arrays.

false Distributed data processing involves breaking large data volumes into smaller pieces that are distributed to many computers for processing.

True or False? Web scraping tools are used to extract and manipulate structured data.

false Structured data may be manipulated using comma-separated values (CSV), whereas web scraping tools are used to extract unstructured data.

True or False? Data is defined as big data if it is more than 1 petabyte.

false There is no minimum required for data to be considered big data