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WGU D322 Introduction to IT Exam|298 Questions & Answers
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WGU D322 Introduction to IT Exam|298Questions and Answers
Information Technology - -technology used in creating and making
information accessible.
-IT Professional Roles - -Administration / Support
-System Administrator - -Maintains system (hardware, software, and
programming)
-Network Administrator - -In charge of the computer network
-Database Administrator - -Focuses on the design, development, and
support of DBMS
-Security Administrator - -Installs/administers firewall security to protect
systems and stop intrusions.
-Web Administrator - -Installs/troubleshoots web severs.
-Support IT Professionals - -Help desk and training.
-Information - -Processed data.
-DIKW Hierarchy - -Data Information Knowledge Wisdom
-Data in DIKW - -The input
(not usable until it converted into a relevant form)
-Information in DIKW - -inferred from data
data transformed into a useful form by applying 1+ processes
-Knowledge in DIKW - -(Refined) Information placed into a context.
recalling relevant information
-Wisdom in DIKW - -Provides a social setting to knowledge
an understanding of the "why"
knowledge and experience.
-Information Systems - -A collection of data and information that supports
decision making in an organization.
Existed for a lot longer than computers.
Enables data processing and storage them delivering information
, -Characteristics of Quality Data - -Relevance - relates directly to decision
being made
Timely - efficient and provided in a timely manner
Thorough - the data must be complete
Accurate - data = captured only once (where possible). Captured as close as
possible to the point of activity
Reliable - stable and consistent over time
-IPOS - -The Input-Procession-Output-Storage Cycle
-Input - -Raw data is entered by the user.
-Processing - -Raw data is structured for usefulness.
-Output - -Information is output so user can see results.
-Storage - -Processed info stored for permanent record.
-Computer System - -A collection of components working together to meet
the users needs;
hardware, software, networks, users.
-Hardware is the
And contains the ____ and ________ - -Physical components (tangible)
system unit and peripheral devices
-Software contain the 1) 2)that perform this function 3)to accomplish - -
Computer programs
That tell the computer how to
process information then execute commands
-Network is a ____ of _______ and _______
These things communicate with each other by ______ _______ - -A collection
of computers and resources that communicate with each other by various
media
-User - -Those who use a computer.
-Software Categories - -Systems Software
Applications Software
, -Evolution of Users 1,2,3 - -First users: engineers who built and
programmed computers
Next: employees who had received specialized training
Today: anyone can be a user.
-Protocol is the - -Rules for computers to communicate by
-2 most common protocols - -TCIP
IP
-TCP/IP is required by all ______that _________ - -Transmission Control
Protocol/Internet Protocol
required of all computers that communicate over the Internet.
-Protocol Stack - -A collection of protocols
EX: TCP/IP
-Components of a Computer 1) 2)__&___ 3) - -CPU, Memory and Storage,
Peripheral Devices
-CPU
Executes programs _______
____________ components of computer
AKA the "______" - -Executes programs' instructions
commands various components in the computer
The "chip"
-Memory Stores... ________ and their _______ - -programs and their data.
-I/O Subsystem contain ___________ where _____ ________ _________devices are
used - -All peripheral devices
where long term storage devices are used.
-Bus contain _______ _____ that enable communication among the _________
________ - -electrical channels that enable communication among the
electronic components
Permits information to move between each component
-The System Unit is the _________ component of _____ ______ ________
systems - -Critical component of all computer based systems
-The system unit consists of 1) 2)and come in ______ - -hardware the
computer needs to run; comes in a variety of shapes and sizes./a tower or
chassis/all internal computer
-Internal Components of the System Unit
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