CompTIA A+ Core 1 (Exam 220-1001) –
Glossary 2024/2025 Exam Questions
with 100% Correct Answers | Latest
Update
*aaS - 🧠ANSWER ✔✔(Something as a Service) An ownership model for cloud
services where "something" can refer to infrastructure, network, platform, or
software
3D modeling software - 🧠ANSWER ✔✔Software that creates a model of physical
objects using polygons, spline curves and bezel curves
3d print process - 🧠ANSWER ✔✔A printing process that builds a solid object
from successive layers of material
3d printer - 🧠ANSWER ✔✔Hardware device capable of small scale
manufacturing. 3D printers use a variety of filament media (typically plastic)
with different properties.
3D scanner - 🧠ANSWER ✔✔A scanner that can gather data about the shape and
appearance of a phsyical object and save that information to a computer
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,3D slicing software - 🧠ANSWER ✔✔Software in a 3D printer or in 3D modeling
software that takes a 3D model and creates multiple horizontal layers of the
model
802.3af - 🧠ANSWER ✔✔PoE powered devices can draw up to about 13 W over
the link. Power is supplied as 350mA@48V and limited to 15.4 W, but the
voltage drop over the maximum 100 feet of cable results in useable power of
around 13 W.
802.3at (PoE+) - 🧠ANSWER ✔✔PoE powered devices can draw up to about 25 W.
PoE+ allows for a broader range of devices to be powered such as cameras with
pan/tilt/zoom capabilities , door controllers, and thin client computers.
AC - 🧠ANSWER ✔✔(alternating current) When electricity is produced by a
generator at the power station, the rotational movement of the magnetic coils
causes the current produced to oscillate like a sine wave (it is said to alternate).
Computers require direct current (at a constant voltage). A transformer is used
to convert AC from the power outlet into the 3.3, 5, and 12 V DC supply required
by the computer
AC adapter - 🧠ANSWER ✔✔An external power supply used to power laptops and
other portable devices
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,accelerometer - 🧠ANSWER ✔✔Mobile technology that can determine the
orientation of a device with a sensor that measures the acceleration of device
direction
Accelerometer / Gyroscope - 🧠ANSWER ✔✔Components used in mobile devices
to detect motion (accelerometer) and rotation (gyroscope). As well as switching
screen orientation, this can be used as a control mechanism (for example, a
driving game could allow the tablet itself to function as a steering wheel).
access time - 🧠ANSWER ✔✔The speed at which memory or a disk drive can be
addressed and utilized (opened, read from, or written to).
ACL - 🧠ANSWER ✔✔(Access Control List) The permissions attached to or
configured on a network resource, such as a folder, file, or firewall. The ACL
specifies which subjects (user accounts, host IP addresses, and so on) are
allowed or denied access and the privileges given over the object (read only,
read/write, and so on)
ad-hoc mode - 🧠ANSWER ✔✔A temporary network mode in which devices
connect to each other directly without an intermediary networking device
ad-hoc network - 🧠ANSWER ✔✔A peer-to-peer network created for the current
print session.
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619652435. TERMS OF USE. PRIVACY STATEMENT. ALL RIGHTS RESERVED
, adapter card - 🧠ANSWER ✔✔Circuit board providing additional functionality to
the computer system (video, sound, networking, modem, and so on). An
adapter card fits a slot on the PC's expansion bus and often provides ports
through slots cut into the back of the PC case. Different cards are designed for
different slots (PCI or PCie).
add-on card - 🧠ANSWER ✔✔An adapter card installed in a PCIe slot
additive color printing - 🧠ANSWER ✔✔A color printing method that combines
differently colored transmitted light to form different shades.
ADF - 🧠ANSWER ✔✔(Auto Document Feeder) Device that feeds media
automatically into a scanner or printer
ADSL - 🧠ANSWER ✔✔(Asymmetrical DSL) A consumer version of DSL that
provides a fast downlink but a slow uplink. The upstream rate is between 64
Kbps and 1 Mbps and the downstream rate is 500 Kbps to 8 Mbps
AES - 🧠ANSWER ✔✔Advanced Encryption Standard) Modern encryption suite
prove providing symmetric encryption (the same key is used to encrypt and
decrypt). AES is a very strong cipher with many applications, including being
part of the WPA2 Wi-Fi encryption scheme.
Page 4 of 134
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER:
619652435. TERMS OF USE. PRIVACY STATEMENT. ALL RIGHTS RESERVED
Glossary 2024/2025 Exam Questions
with 100% Correct Answers | Latest
Update
*aaS - 🧠ANSWER ✔✔(Something as a Service) An ownership model for cloud
services where "something" can refer to infrastructure, network, platform, or
software
3D modeling software - 🧠ANSWER ✔✔Software that creates a model of physical
objects using polygons, spline curves and bezel curves
3d print process - 🧠ANSWER ✔✔A printing process that builds a solid object
from successive layers of material
3d printer - 🧠ANSWER ✔✔Hardware device capable of small scale
manufacturing. 3D printers use a variety of filament media (typically plastic)
with different properties.
3D scanner - 🧠ANSWER ✔✔A scanner that can gather data about the shape and
appearance of a phsyical object and save that information to a computer
Page 1 of 134
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER:
619652435. TERMS OF USE. PRIVACY STATEMENT. ALL RIGHTS RESERVED
,3D slicing software - 🧠ANSWER ✔✔Software in a 3D printer or in 3D modeling
software that takes a 3D model and creates multiple horizontal layers of the
model
802.3af - 🧠ANSWER ✔✔PoE powered devices can draw up to about 13 W over
the link. Power is supplied as 350mA@48V and limited to 15.4 W, but the
voltage drop over the maximum 100 feet of cable results in useable power of
around 13 W.
802.3at (PoE+) - 🧠ANSWER ✔✔PoE powered devices can draw up to about 25 W.
PoE+ allows for a broader range of devices to be powered such as cameras with
pan/tilt/zoom capabilities , door controllers, and thin client computers.
AC - 🧠ANSWER ✔✔(alternating current) When electricity is produced by a
generator at the power station, the rotational movement of the magnetic coils
causes the current produced to oscillate like a sine wave (it is said to alternate).
Computers require direct current (at a constant voltage). A transformer is used
to convert AC from the power outlet into the 3.3, 5, and 12 V DC supply required
by the computer
AC adapter - 🧠ANSWER ✔✔An external power supply used to power laptops and
other portable devices
Page 2 of 134
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER:
619652435. TERMS OF USE. PRIVACY STATEMENT. ALL RIGHTS RESERVED
,accelerometer - 🧠ANSWER ✔✔Mobile technology that can determine the
orientation of a device with a sensor that measures the acceleration of device
direction
Accelerometer / Gyroscope - 🧠ANSWER ✔✔Components used in mobile devices
to detect motion (accelerometer) and rotation (gyroscope). As well as switching
screen orientation, this can be used as a control mechanism (for example, a
driving game could allow the tablet itself to function as a steering wheel).
access time - 🧠ANSWER ✔✔The speed at which memory or a disk drive can be
addressed and utilized (opened, read from, or written to).
ACL - 🧠ANSWER ✔✔(Access Control List) The permissions attached to or
configured on a network resource, such as a folder, file, or firewall. The ACL
specifies which subjects (user accounts, host IP addresses, and so on) are
allowed or denied access and the privileges given over the object (read only,
read/write, and so on)
ad-hoc mode - 🧠ANSWER ✔✔A temporary network mode in which devices
connect to each other directly without an intermediary networking device
ad-hoc network - 🧠ANSWER ✔✔A peer-to-peer network created for the current
print session.
Page 3 of 134
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER:
619652435. TERMS OF USE. PRIVACY STATEMENT. ALL RIGHTS RESERVED
, adapter card - 🧠ANSWER ✔✔Circuit board providing additional functionality to
the computer system (video, sound, networking, modem, and so on). An
adapter card fits a slot on the PC's expansion bus and often provides ports
through slots cut into the back of the PC case. Different cards are designed for
different slots (PCI or PCie).
add-on card - 🧠ANSWER ✔✔An adapter card installed in a PCIe slot
additive color printing - 🧠ANSWER ✔✔A color printing method that combines
differently colored transmitted light to form different shades.
ADF - 🧠ANSWER ✔✔(Auto Document Feeder) Device that feeds media
automatically into a scanner or printer
ADSL - 🧠ANSWER ✔✔(Asymmetrical DSL) A consumer version of DSL that
provides a fast downlink but a slow uplink. The upstream rate is between 64
Kbps and 1 Mbps and the downstream rate is 500 Kbps to 8 Mbps
AES - 🧠ANSWER ✔✔Advanced Encryption Standard) Modern encryption suite
prove providing symmetric encryption (the same key is used to encrypt and
decrypt). AES is a very strong cipher with many applications, including being
part of the WPA2 Wi-Fi encryption scheme.
Page 4 of 134
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER:
619652435. TERMS OF USE. PRIVACY STATEMENT. ALL RIGHTS RESERVED
