ISDS EXAM 2 UPDATED ACTUAL QUESTIONS AND
CORRECT ANSWERS
Question:
What is Business Intelligence (BI)?
Answer:
BI is a range of applications, practices, and
technologies for the extraction, transformation,
integration, organization, analysis, visualization, and
interpretation of data to support improved decision
making.
Question:
Why is BI important in business?
Answer:
It helps organizations learn from past mistakes and
build on past successes to plan future initiatives.
Question:
What is Big Data?
Answer:
Big Data refers to data collections that are so
enormous and complex that traditional data
management software, hardware, and analysis
processes cannot handle them.
Question:
What are the 5 characteristics of Big
Data?
Answer:
Volume, Velocity, Value, Variety, and Veracity.
Question:
What does Volume refer to in Big
Data?
Answer:
It addresses the quantity of data generated and
stored.
Question:
What does Velocity refer to in Big
Data?
Answer:
It refers to the rate at which new data is being
generated.
, Question:
What does Value refer to in Big Data?
Answer:
It refers to the worth of the data in decision making.
Question:
What does Variety refer to in Big Data?
Answer:
It indicates that data comes in various formats,
including structured and unstructured data.
Question:
What does Veracity refer to in Big
Data?
Answer:
It measures the quality of the data.
Question:
What are sources of Big Data?
Answer:
Business Applications, Social Media, Sensors,
Controllers, media sources, machine logs, public
sources, and archives of historical records.
Question:
What are the challenges of Big Data?
Answer:
Identifying which data to store, where to store it,
finding relevant data, deriving value from data, and
protecting data from unauthorized access.
Question:
What is ETL used for?
Answer:
ETL (Extract, Transform, Load) is used to extract data
from the source, transform it into a usable format, and
load it into the appropriate repository for analysis.
Question:
What is a Data Warehouse?
Answer:
A large database that holds business information from
many sources in the enterprise.
Question:
What is a Data Mart?
Answer:
CORRECT ANSWERS
Question:
What is Business Intelligence (BI)?
Answer:
BI is a range of applications, practices, and
technologies for the extraction, transformation,
integration, organization, analysis, visualization, and
interpretation of data to support improved decision
making.
Question:
Why is BI important in business?
Answer:
It helps organizations learn from past mistakes and
build on past successes to plan future initiatives.
Question:
What is Big Data?
Answer:
Big Data refers to data collections that are so
enormous and complex that traditional data
management software, hardware, and analysis
processes cannot handle them.
Question:
What are the 5 characteristics of Big
Data?
Answer:
Volume, Velocity, Value, Variety, and Veracity.
Question:
What does Volume refer to in Big
Data?
Answer:
It addresses the quantity of data generated and
stored.
Question:
What does Velocity refer to in Big
Data?
Answer:
It refers to the rate at which new data is being
generated.
, Question:
What does Value refer to in Big Data?
Answer:
It refers to the worth of the data in decision making.
Question:
What does Variety refer to in Big Data?
Answer:
It indicates that data comes in various formats,
including structured and unstructured data.
Question:
What does Veracity refer to in Big
Data?
Answer:
It measures the quality of the data.
Question:
What are sources of Big Data?
Answer:
Business Applications, Social Media, Sensors,
Controllers, media sources, machine logs, public
sources, and archives of historical records.
Question:
What are the challenges of Big Data?
Answer:
Identifying which data to store, where to store it,
finding relevant data, deriving value from data, and
protecting data from unauthorized access.
Question:
What is ETL used for?
Answer:
ETL (Extract, Transform, Load) is used to extract data
from the source, transform it into a usable format, and
load it into the appropriate repository for analysis.
Question:
What is a Data Warehouse?
Answer:
A large database that holds business information from
many sources in the enterprise.
Question:
What is a Data Mart?
Answer:
