WGU D075 OA EXAM 2025 EXAMINATION
TEST 2026 QUESTIONS WITH SOLUTIONS
GRADED A+
⩥ 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
⩥ Examples of GPS & satellite radio. Answer: Satellite
⩥ Topology. Answer: The mapping of a physical network and logical
interconnections between nodes(computers).
⩥ Nodes. Answer: Devices connected as part of a computer network
(cpu, printer, router)
⩥ Bus topology. Answer: node is connected to a common liner backbone
that had two end points
⩥ Star topology. Answer: Radiate around a central node, most common.
If central fails then all will fail
⩥ Ring Topology. Answer: Connected to another node with first and last
computer, data is transmitted in a circular manner
⩥ Virus. Answer: spread themselves attaching to files and infection
webistes, and emails,, disable systems
TEST 2026 QUESTIONS WITH SOLUTIONS
GRADED A+
⩥ 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
⩥ Examples of GPS & satellite radio. Answer: Satellite
⩥ Topology. Answer: The mapping of a physical network and logical
interconnections between nodes(computers).
⩥ Nodes. Answer: Devices connected as part of a computer network
(cpu, printer, router)
⩥ Bus topology. Answer: node is connected to a common liner backbone
that had two end points
⩥ Star topology. Answer: Radiate around a central node, most common.
If central fails then all will fail
⩥ Ring Topology. Answer: Connected to another node with first and last
computer, data is transmitted in a circular manner
⩥ Virus. Answer: spread themselves attaching to files and infection
webistes, and emails,, disable systems
