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WGU C182 Introduction to IT Exam/230 Questions with Accurate Solutions
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WGU C182 Introduction to IT Exam/230Questions with Accurate Solutions
Information Technology - -The technology used in creating, maintaining, and
making information accessible.
-IT Professional Roles - -Administration and Support
-System Administrator - -Maintains all aspects of the system including
hardware, software, and programming.
-Network Administrator - -In charge of all aspects of the computer network
-Database Administrator - -Focuses on the design, development, and
support of database management systems (DBMSs).
-Security Administrator - -Installs, configures, and administers firewall
security to protect systems and proactively work to stop intrusions.
-Web Administrator - -Installs, configures, maintains, secures, and
troubleshoots web severs.
-Support IT Professionals - -Help desk and training.
-Information - -Processed data.
-DIKW Hierarchy - -Defines the transition of data to information to
knowledge to wisdom. (Data Information Knowledge Wisdom)
-Data in DIKW - -The input directly received by the user (or computer). It is
generally not usable until it has been converted into a relevant form.
-Information in DIKW - -Having been inferred from data; one or more
processes have been applied to the data to transform it into a more useful
form.
-Knowledge in DIKW - -Information that has been put to use; information
placed into a context. Refined information such that the user of the
knowledge is able to call forth only relevant portions of information when
needed.
-Wisdom in DIKW - -Provides a social setting to knowledge; an
understanding of the "why". Can only come by having both knowledge and
experience.
, -Information Systems - -A collection of data and information used to support
the management of an organization. Also refers to the technical components
and human resources that enable the assembly, storage, and processing of
data and the delivery of information. This has existed for a lot longer than
computers.
-Characteristics of Quality Data - -Relevance - the data being used must
apply directly to the decision being made
Timely - data must be efficient and must be provided in a timely manner
Thorough - the data must be complete
Accurate - data should be captured only once, where possible and should be
captured as close to the point of activity as possible.
Reliable - data should reflect stable and consistent data collection processes
across collections points and over time
-IPOS - -The Input-Procession-Output-Storage Cycle
-Input - -Raw data is entered by the user.
-Processing - -Raw data is organized or structured for usefulness.
-Output - -Information is output so user can see results.
-Storage - -Processed information is stored for permanent record.
-Computer System - -A collection of components that work together to meet
the needs of the user; typically categorized as either hardware, software,
networks, or users.
-Hardware - -Physical components of a computer system which include the
system unit and its components and peripheral devices; tangible aspects of
the computer.
-Software - -Computer programs that tell the computer what to do--how to
execute commands and process information
-Network - -A collection of computers and resources connected by various
media so that they can communicate with each other.
-User - -Those who use a computer.
, -Software Categories - -Systems Software and Applications Software
-Evolution of Users - -First users were the engineers who built and
programmed computers, then employees who had received specialized
training were users, and now today, anyone and everyone can be a user.
-Protocol - -Rules provided by which networks communicate with each
other.
-TCP/IP - -Transmission Control Protocol/Internet Protocol. Most commonly
used protocol; is required of all computers that communicate over the
Internet.
-Protocol Stack - -A collection of protocols. TCP/IP is an example.
-Components of a Computer - -CPU, Memory and Storage, Peripheral
Devices
-CPU - -Executes programs' instructions and commands various
components in the computer. Referred to as the "chip".
-Memory - -Stores the programs being executed and the data they are
using.
-I/O Subsystem - -All peripheral devices where long term storage devices
are used.
-Bus - -Permits information to move between each component; electrical
channels that enable communication among the electronic components
-System Unit - -Critical component of all computer based systems; consists
of most of the hardware the computer needs in order to run; comes in a
variety of shapes and sizes.
-Internal Components of the System Unit - -Case, Internal Bays, Buses,
Ports, Hard Drive, Motherboard, CPU, CPU Cooler, Memory Module (RAM),
Power Supply Unit (PSU), Expansion Slots/Cards
-Parts of the CPU - -Control Unit (CU) - retrieves the instructions and the raw
data that is input and coordinates or controls the sending of those
instructions and data to the ALU
Arithmetic Logic Unit (ALU) - does the actual processing of the data;
completing mathematical calculations and logical operations to process the
data and converting the input of the keyboard text entry to output displayed
on the screen
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