WGU D316 IT FOUNDATIONS EXAM 3
PRACTICE TEST 2026 QUESTIONS WITH
CORRECT ANSWERS
◉ peripheral devices. Answer: the components of a pc designed to
perform the function of input, output, or for external storage.
input: keyboard, mouse, mic.
output: monitor, speakers, printer.
◉ port. Answer: the connection point on an I/O panel that allows
peripheral devices to be connected to the pc.
m; these are designed for different device types so there are a
variety of types as well.
◉ I/O (input/output) panel. Answer: the cutouts housing the ports
that allow for the connection of peripheral devices.
m; front panel ports: audio, USB. motherboard panel ports;
everything necessary. adapter card ports; whatever necessary for its
function.
,◉ I/O shield. Answer: a piece of plastic on the I/O rear panel.
grounds I/O ports to the case. blocks electromagnetic interference.
acts as a dust barrier.
◉ power supply unit (PSU). Answer: powers PC components with
direct current (DC) low voltage power; must meet the combined
power requirements of the components.
m; access is on the tower's rear panel. has a fan exhaust.
◉ electrostatic discharge (ESD). Answer: a static charge on
someone's finger or on a tool conducted into a computer chip that
can cause a temporary or permanent fault in the chip.
m; connected through to the PSU to the building's ground system
diverts this charge away from the chip.
◉ electromagnetic interference (EMI). Answer: energy from
magnetic and electrical sources that components are exposed to that
can cause temporary or permanent faults.
m; a pc's case absorbs this energy.
,◉ bit (b), or binary digit. Answer: has the value of one or zero and is
referred to with a "b".
◉ byte (B). Answer: a multiple of eight bits and is referred to with a
"B".
m; storage is often measured in THIS.
◉ universal serial bus (USB). Answer: the standard means of
connecting most types of peripheral devices to a computer.
◉ half-duplex. Answer: each device can send or receive, but not at
the same time.
◉ full-duplex. Answer: each device can send and receive
simultaneously.
◉ connector. Answer: the part of a peripheral cable that can be
inserted into a port with the same shape or form factor.
◉ form factor. Answer: meaning the shape of any particular device
or a part of a device.
, ex; the connectors on a cable. the shape of a port. the size and shape
of a motherboard.
◉ high-definition multimedia interface (HDMI). Answer: both digital
audio and video interface. developed for use on both consumer
electronics and computer equipment.
◉ displayport. Answer: daisy-chaining. similar features to HDMI: 4K,
audio, content protection.
m; royalty-free standard by the video electronics standards
association (VESA).
◉ thunderbolt. Answer: daisy-chaining. can be used as a display
interface and as a general peripheral interface.
m; distinguished with an icon. current version 3 uses the same port,
connector, and cabling as USB-C.
◉ lightning. Answer: a proprietary port and connector for apple's
iphones/ipads that are only found on their mobile devices.
m; requires a suitable adapter to connect to other devices.
PRACTICE TEST 2026 QUESTIONS WITH
CORRECT ANSWERS
◉ peripheral devices. Answer: the components of a pc designed to
perform the function of input, output, or for external storage.
input: keyboard, mouse, mic.
output: monitor, speakers, printer.
◉ port. Answer: the connection point on an I/O panel that allows
peripheral devices to be connected to the pc.
m; these are designed for different device types so there are a
variety of types as well.
◉ I/O (input/output) panel. Answer: the cutouts housing the ports
that allow for the connection of peripheral devices.
m; front panel ports: audio, USB. motherboard panel ports;
everything necessary. adapter card ports; whatever necessary for its
function.
,◉ I/O shield. Answer: a piece of plastic on the I/O rear panel.
grounds I/O ports to the case. blocks electromagnetic interference.
acts as a dust barrier.
◉ power supply unit (PSU). Answer: powers PC components with
direct current (DC) low voltage power; must meet the combined
power requirements of the components.
m; access is on the tower's rear panel. has a fan exhaust.
◉ electrostatic discharge (ESD). Answer: a static charge on
someone's finger or on a tool conducted into a computer chip that
can cause a temporary or permanent fault in the chip.
m; connected through to the PSU to the building's ground system
diverts this charge away from the chip.
◉ electromagnetic interference (EMI). Answer: energy from
magnetic and electrical sources that components are exposed to that
can cause temporary or permanent faults.
m; a pc's case absorbs this energy.
,◉ bit (b), or binary digit. Answer: has the value of one or zero and is
referred to with a "b".
◉ byte (B). Answer: a multiple of eight bits and is referred to with a
"B".
m; storage is often measured in THIS.
◉ universal serial bus (USB). Answer: the standard means of
connecting most types of peripheral devices to a computer.
◉ half-duplex. Answer: each device can send or receive, but not at
the same time.
◉ full-duplex. Answer: each device can send and receive
simultaneously.
◉ connector. Answer: the part of a peripheral cable that can be
inserted into a port with the same shape or form factor.
◉ form factor. Answer: meaning the shape of any particular device
or a part of a device.
, ex; the connectors on a cable. the shape of a port. the size and shape
of a motherboard.
◉ high-definition multimedia interface (HDMI). Answer: both digital
audio and video interface. developed for use on both consumer
electronics and computer equipment.
◉ displayport. Answer: daisy-chaining. similar features to HDMI: 4K,
audio, content protection.
m; royalty-free standard by the video electronics standards
association (VESA).
◉ thunderbolt. Answer: daisy-chaining. can be used as a display
interface and as a general peripheral interface.
m; distinguished with an icon. current version 3 uses the same port,
connector, and cabling as USB-C.
◉ lightning. Answer: a proprietary port and connector for apple's
iphones/ipads that are only found on their mobile devices.
m; requires a suitable adapter to connect to other devices.
