WGU D075 OA 100 2026 CORE IT PRINCIPLES
AND SOFTWARE BUSINESS APPLICATIONS
STUDY MATERIALS
◉ Information Technology.
Answer: Backbone of business.
◉ Central Processing Unit (CPU).
Answer: Brain of the computer that performs instructions defined
by software
◉ Random Access Memory (RAM).
Answer: Short term working memory supports the CPU aka primary
storage
◉ Motherboard.
Answer: A circuit board that contains all of the computer system's
main components.
◉ Network Interface Card (NIC).
Answer: A card that enables one computer to send and receive data
to and from another computer.
,◉ USB.
Answer: A type of connection used to attach devices such as flash
drives, scanners, cameras, and printers to a computer. Attaches
peripheral devices to a CPU
◉ disk drive.
Answer: A device that reads data from and writes data onto a disk.
The disk can be a hard disk - removable or fixed; a floppy disk. It is
an example of an input and output device.
◉ peripheral device.
Answer: A device that is attached to the computer and aids in input
and/or output.
◉ Midrange Computers.
Answer: Sometimes called minicomputers, midrange computers are
less powerful and smaller in physical size than mainframe
computers, but do many of the same things, simply on a smaller
scale.
◉ Microcomputer.
Answer: Smaller mainframe. Most used in business. A single-user
computer that comes in many forms, such as a desktop model, a
,portable laptop/notebook, or a handheld computer; also called a
personal computer.
◉ computer software.
Answer: list of instructions for computer to follow that is stored in
the computer's memory. It tells the computer how to work and
perform computer tasks
◉ Application Software.
Answer: computer software created to allow the user to perform a
specific job or task
◉ system software.
Answer: Consists of the programs that control or maintain the
operations of the computer and its devices.
◉ Utility Software.
Answer: Performs a particular function in the background, such as
virus protection & printer drivers
◉ Software.
Answer: Program that enables the computer to work
, ◉ Operating system.
Answer: enables and becomes the platform for the app to work
◉ object linking and embedding (OLE).
Answer: Method of sharing and saving data. Software developed by
MS that allows embedding and linking to documents.
◉ Network.
Answer: Backbone of It infrastructure, two or more devices that
connect
◉ How does a network connect?.
Answer: Client laptop/server (Central CPU).
◉ Device connected to a network.
Answer: Node
◉ Nodes.
Answer: Communicate through wires (Ethernet, cable, fiber optics)
◉ Examples of radio waves.
Answer: Wifi, celltower
AND SOFTWARE BUSINESS APPLICATIONS
STUDY MATERIALS
◉ Information Technology.
Answer: Backbone of business.
◉ Central Processing Unit (CPU).
Answer: Brain of the computer that performs instructions defined
by software
◉ Random Access Memory (RAM).
Answer: Short term working memory supports the CPU aka primary
storage
◉ Motherboard.
Answer: A circuit board that contains all of the computer system's
main components.
◉ Network Interface Card (NIC).
Answer: A card that enables one computer to send and receive data
to and from another computer.
,◉ USB.
Answer: A type of connection used to attach devices such as flash
drives, scanners, cameras, and printers to a computer. Attaches
peripheral devices to a CPU
◉ disk drive.
Answer: A device that reads data from and writes data onto a disk.
The disk can be a hard disk - removable or fixed; a floppy disk. It is
an example of an input and output device.
◉ peripheral device.
Answer: A device that is attached to the computer and aids in input
and/or output.
◉ Midrange Computers.
Answer: Sometimes called minicomputers, midrange computers are
less powerful and smaller in physical size than mainframe
computers, but do many of the same things, simply on a smaller
scale.
◉ Microcomputer.
Answer: Smaller mainframe. Most used in business. A single-user
computer that comes in many forms, such as a desktop model, a
,portable laptop/notebook, or a handheld computer; also called a
personal computer.
◉ computer software.
Answer: list of instructions for computer to follow that is stored in
the computer's memory. It tells the computer how to work and
perform computer tasks
◉ Application Software.
Answer: computer software created to allow the user to perform a
specific job or task
◉ system software.
Answer: Consists of the programs that control or maintain the
operations of the computer and its devices.
◉ Utility Software.
Answer: Performs a particular function in the background, such as
virus protection & printer drivers
◉ Software.
Answer: Program that enables the computer to work
, ◉ Operating system.
Answer: enables and becomes the platform for the app to work
◉ object linking and embedding (OLE).
Answer: Method of sharing and saving data. Software developed by
MS that allows embedding and linking to documents.
◉ Network.
Answer: Backbone of It infrastructure, two or more devices that
connect
◉ How does a network connect?.
Answer: Client laptop/server (Central CPU).
◉ Device connected to a network.
Answer: Node
◉ Nodes.
Answer: Communicate through wires (Ethernet, cable, fiber optics)
◉ Examples of radio waves.
Answer: Wifi, celltower
