WGU C182 QUESTIONS WITH ACCURATE ANSWERS
What are the parts of the DIKW? - Accurate answers Data, information, knowledge, wisdom.
Data (DIKW) - Accurate answers Input directly received by human or computer (e.g. taste or smell
for human and input for a computer).
Information (DIKW) - Accurate answers Data transformed in to something useful (e.g. list of
numbers processed through statistical analysis).
Knowledge (DIKW) - Accurate answers Result of experience gained from using information (e.g.
selecting proper algebraic laws to solve a problem).
Wisdom (DIKW) - Accurate answers An understanding of why something is or was. Can only come
by having knowledge and experience.
Information System - Accurate answers Collection of data and information used to support
management of an organization.
Characteristics of quality data - Accurate answers Relevant, timely, thorough, accurate, and
reliable.
Relevant (Characteristics of quality data) - Accurate answers Data being used must apply directly to
the decision being made (e.g. if information is needed about a customer's purchase history, in order to
better serve the customer's needs, it is relevant to collect data on prior business transactions with the
specific customer).
Timely (Characteristics of quality data) - Accurate answers Data must be efficient and must be
provided in a timely manner so that companies can utilize it in their business (e.g. If a company set their
budget for the new fiscal year, they would need access to financial data from most recent years).
Thorough (Characteristics of quality data) - Accurate answers Data must not have any error or
lapses (e.g. Client gives apt number in address so shipping company knows exactly where to go)
Accurate (Characteristics of quality data) - Accurate answers Data must be captured as close to the
point of activity as possible (e.g. Making sure customer addresses are correct before sending out
coupons)
Reliable (Characteristics of quality data) - Accurate answers Data should reflect stable and
consistent data collection processes across collection points and over time, whether using manual or
computer-based systems, or a combination (e.g. All employees track sales with sales tax).
Which of the following pairs of numbering systems use the least number of digits in machine code?
A. binary and hexidecimal
B. decimal and binary
C. octal and binary
, D. decimal and hexidecimal
E. octal and hexidecimal - Accurate answers E. octal and hexidecimal
Scripting languages used more for automation than software development - Accurate answers
JavaScript, ASP, JSP, PHP, Perl, Tcl, and Python.
N-Tier and its parts - Accurate answers Often used to indicate that the number of tiers a system
will be broken down into will vary between different software development projects. Includes
presentation tier, logic tier, and data tier.
Presentation tier (N-Tier) - Accurate answers Where user interface for the system is developed
(e.g. Employee printing out quarterly report of sales figures).
Logic tier (N-Tier) - Accurate answers Where system performs its logic processing. Moves and
processes data between presentation tier and data tier (e.g. Employee determines annual rate of
increase in sales over last year).
Data tier (N-Tier) - Accurate answers Where data are stored, retrieved, and updated from database
tables (e.g. Employee inputs new customer list of January).
MVC model and its parts - Accurate answers Development technique used in the implementation
of user interfaces (e.g. Marketing manager wants to see how many units of a product is on-hand to
justify a new marketing campaign you would request this information via the controller. The user
wouldn't form the actual query, but would input the type of data requested, perhaps selecting from a
drop down menu the item number and type of report requested. The controller would send this data to
the model. The model would then develop a query based on the information sent to it from the
controller and the result of the query would be presented in the selected view (report) back to the user).
Includes the model, the controller, and the view.
Model (MVC) - Accurate answers Where changes and updates are made to the data based on new
data. It is in the model layer that the business logic is designed.
Controller (MVC) - Accurate answers Part of an application that interacts with the user (via the
view) and passes along the user requests to the model. It is in the controller layer that the input logic is
designed.
View (MVC) - Accurate answers Part of the application that represents the user interface. It is in
the view layer of the application that the user interface logic is designed.
Kernel - Accurate answers The core components of the operating system are referred to as the
kernel.
Loaded when the computer is first booted.
Handles process management, resource management, and memory management.
Sits on top of the hardware and is the interface between hardware and software.
Device drivers - Accurate answers Provide specific interfaces between the OS running a computer
and hardware.
What are the parts of the DIKW? - Accurate answers Data, information, knowledge, wisdom.
Data (DIKW) - Accurate answers Input directly received by human or computer (e.g. taste or smell
for human and input for a computer).
Information (DIKW) - Accurate answers Data transformed in to something useful (e.g. list of
numbers processed through statistical analysis).
Knowledge (DIKW) - Accurate answers Result of experience gained from using information (e.g.
selecting proper algebraic laws to solve a problem).
Wisdom (DIKW) - Accurate answers An understanding of why something is or was. Can only come
by having knowledge and experience.
Information System - Accurate answers Collection of data and information used to support
management of an organization.
Characteristics of quality data - Accurate answers Relevant, timely, thorough, accurate, and
reliable.
Relevant (Characteristics of quality data) - Accurate answers Data being used must apply directly to
the decision being made (e.g. if information is needed about a customer's purchase history, in order to
better serve the customer's needs, it is relevant to collect data on prior business transactions with the
specific customer).
Timely (Characteristics of quality data) - Accurate answers Data must be efficient and must be
provided in a timely manner so that companies can utilize it in their business (e.g. If a company set their
budget for the new fiscal year, they would need access to financial data from most recent years).
Thorough (Characteristics of quality data) - Accurate answers Data must not have any error or
lapses (e.g. Client gives apt number in address so shipping company knows exactly where to go)
Accurate (Characteristics of quality data) - Accurate answers Data must be captured as close to the
point of activity as possible (e.g. Making sure customer addresses are correct before sending out
coupons)
Reliable (Characteristics of quality data) - Accurate answers Data should reflect stable and
consistent data collection processes across collection points and over time, whether using manual or
computer-based systems, or a combination (e.g. All employees track sales with sales tax).
Which of the following pairs of numbering systems use the least number of digits in machine code?
A. binary and hexidecimal
B. decimal and binary
C. octal and binary
, D. decimal and hexidecimal
E. octal and hexidecimal - Accurate answers E. octal and hexidecimal
Scripting languages used more for automation than software development - Accurate answers
JavaScript, ASP, JSP, PHP, Perl, Tcl, and Python.
N-Tier and its parts - Accurate answers Often used to indicate that the number of tiers a system
will be broken down into will vary between different software development projects. Includes
presentation tier, logic tier, and data tier.
Presentation tier (N-Tier) - Accurate answers Where user interface for the system is developed
(e.g. Employee printing out quarterly report of sales figures).
Logic tier (N-Tier) - Accurate answers Where system performs its logic processing. Moves and
processes data between presentation tier and data tier (e.g. Employee determines annual rate of
increase in sales over last year).
Data tier (N-Tier) - Accurate answers Where data are stored, retrieved, and updated from database
tables (e.g. Employee inputs new customer list of January).
MVC model and its parts - Accurate answers Development technique used in the implementation
of user interfaces (e.g. Marketing manager wants to see how many units of a product is on-hand to
justify a new marketing campaign you would request this information via the controller. The user
wouldn't form the actual query, but would input the type of data requested, perhaps selecting from a
drop down menu the item number and type of report requested. The controller would send this data to
the model. The model would then develop a query based on the information sent to it from the
controller and the result of the query would be presented in the selected view (report) back to the user).
Includes the model, the controller, and the view.
Model (MVC) - Accurate answers Where changes and updates are made to the data based on new
data. It is in the model layer that the business logic is designed.
Controller (MVC) - Accurate answers Part of an application that interacts with the user (via the
view) and passes along the user requests to the model. It is in the controller layer that the input logic is
designed.
View (MVC) - Accurate answers Part of the application that represents the user interface. It is in
the view layer of the application that the user interface logic is designed.
Kernel - Accurate answers The core components of the operating system are referred to as the
kernel.
Loaded when the computer is first booted.
Handles process management, resource management, and memory management.
Sits on top of the hardware and is the interface between hardware and software.
Device drivers - Accurate answers Provide specific interfaces between the OS running a computer
and hardware.
