AAA
Authentication, Authorization, and Accounting
Core 1 General

AAAA
Authentication, Authorization, Accounting, and Auditing
Core 1 General

ACL
Access Control List
Core 1 General

ADF
Automatic Document Feeder
Core 1 General

AES
Advanced Encryption Standard
Core 1 General

AMD
Advanced Micro Devices, Inc.
Core 1 General

APFS
Apple File System
Core 1 General

APIPA
Automatic Private Internet Protocol Addressing
2.0 Networking

ARM
Advanced RISC [Reduced Instruction Set Computer] Machine
Core 1 General

ATX
Advanced Technology Extended
Core 1 General

BEC
Business Email Compromise
Core 1 General

BIOS
Basic Input/Output System
3.0 Hardware

BSOD
Blue Screen of Death
Core 1 General

BYOD
Bring Your Own Device
Core 1 General

CAC
Calling-card Authorization Computer
Core 1 General

CIFS
Common Internet File System
Core 1 General

CMDB
Configuration Management Database
Core 1 General

CNAME
Canonical Name
Core 1 General

CPU
Central Processing Unit
3.0 Hardware

DB-9
Serial Communications D-Shell Connector, 9 pins
2.0 Networking

DDoS
Distributed Denial of Service
Core 1 General

DDR
Double Data Rate
Core 1 General

DHCP
Dynamic Host Configuration Protocol
2.0 Networking

DIMM
Dual In-line Memory Module
3.0 Hardware

DKIM
DomainKeys Identified Mail
Core 1 General

DLP
Data Loss Prevention
Core 1 General

DMARC
Domain-based Message Authentication, Reporting, and Conformance
Core 1 General

DNS
Domain Name System
2.0 Networking

DoS
Denial of Service
Core 1 General

DRM
Digital Rights Management
Core 1 General

DSL
Digital Subscriber Line
Core 1 General

DVI
Digital Visual Interface
Core 1 General

ECC
Error-correcting Code
5.0 Hardware and Network Troubleshooting

EDR
Endpoint Detection and Response
Core 1 General

EFS
Encrypting File System
Core 1 General

EOL
End-of-life
Core 1 General

eSATA
External Serial Advanced Technology Attachment
Core 1 General

ESD
Electrostatic Discharge
Core 1 General

EULA
End-user License Agreement
Core 1 General

exFAT
Extended File Allocation Table
Core 1 General

FAT32
32-bit File Allocation Table
Core 1 General

FRT
Facial Recognition Technology
Core 1 General

FTP
File Transfer Protocol
2.0 Networking

GFS
Grandfather-Father-Son
Core 1 General

GPS
Global Positioning System
1.0 Mobile Devices

GPT
GUID [Globally Unique Identifier] Partition Table
Core 1 General

GUID
Globally Unique Identifier
Core 1 General

HDD
Hard Disk Drive
3.0 Hardware

HDMI
High-definition Media Interface
Core 1 General

HSM
Hardware Security Module
3.0 Hardware

HTTP
Hypertext Transfer Protocol
2.0 Networking

HTTPS
Hypertext Transfer Protocol Secure
2.0 Networking

IaaS
Infrastructure as a Service
4.0 Virtualization and Cloud

IAM
Identity and Access Management
Core 1 General

IMAP
Internet Mail Access Protocol
2.0 Networking

IOPS
Input/Output Operations Per Second
Core 1 General

IoT
Internet of Things
Core 1 General

IP
Internet Protocol
2.0 Networking

IPS
In-plane Switching
Core 1 General

ISO
International Organization for Standardization
Core 1 General

ITX
Information Technology eXtended
Core 1 General

KVM
Keyboard-Video-Mouse
Core 1 General

LAN
Local Area Network
2.0 Networking

LC
Lucent Connector
2.0 Networking

LCD
Liquid Crystal Display
3.0 Hardware

LDAP
Lightweight Directory Access Protocol
2.0 Networking

LED
Light-emitting Diode
Core 1 General

MAC
Media Access Control
Core 1 General

MAN
Metropolitan Area Network
2.0 Networking

MBR
Master Boot Record
Core 1 General

MDM
Mobile Device Management
1.0 Mobile Devices

MDR
Managed Detection and Response
Core 1 General

MFA
Multifactor Authentication
Core 1 General

MMC
Microsoft Management Console
Core 1 General

MNDA
Mutual Non-disclosure Agreement
Core 1 General

mSATA
Mini-serial Advanced Technology Attachment
Core 1 General

MSDS
Material Safety Data Sheet
Core 1 General

MX
Mail Exchange
Core 1 General

NDA
Non-disclosure Agreement
Core 1 General

NetBIOS
Network Basic Input/Output System
2.0 Networking

NFC
Near-field Communication
1.0 Mobile Devices

NIC
Network Interface Card
2.0 Networking

NTFS
New Technology File System
Core 1 General

NTP
Network Time Protocol
2.0 Networking

NVMe
Non-volatile Memory Express
3.0 Hardware

OLED
Organic Light-emitting Diode
Core 1 General

ONT
Optical Network Terminal
2.0 Networking

OS
Operating System
Core 1 General

OTP
One-time Password (or Passcode)
Core 1 General

PaaS
Platform as a Service
4.0 Virtualization and Cloud

PAM
Privileged Access Management
Core 1 General

PAN
Personal Area Network
2.0 Networking

PC
Personal Computer
Core 1 General

PCI
Peripheral Component Interconnect
3.0 Hardware

PCIe
Peripheral Component Interconnect Express
3.0 Hardware

PII
Personally Identifiable Information
Core 1 General

PIN
Personal Identification Number
Core 1 General

PIV
Personal Identity Verification
Core 1 General

PoE
Power over Ethernet
2.0 Networking

POP
Post Office Protocol
2.0 Networking

POST
Power-on Self-test
5.0 Hardware and Network Troubleshooting

PUP
Potentially Unwanted Program
Core 1 General

RADIUS
Remote Authentication Dial-in User Server
Core 1 General

RAID
Redundant Array of Independent Disks
3.0 Hardware

RAM
Random-access Memory
3.0 Hardware

RDP
Remote Desktop Protocol
2.0 Networking

ReFS
Resilient File System
Core 1 General

RFID
Radio-frequency Identification
Core 1 General

RJ11
Registered Jack Function 11
Core 1 General

RJ45
Registered Jack Function 45
Core 1 General

RMM
Remote Monitoring and Management
Core 1 General

RSR
Rapid Security Response
Core 1 General

S.M.A.R.T
Self-monitoring Analysis and Reporting Technology
Core 1 General

SaaS
Software as a Service
4.0 Virtualization and Cloud

SAML
Security Assertions Markup Language
Core 1 General

SAN
Storage Area Network
2.0 Networking

SAS
Serial Attached SCSI [Small Computer System Interface]
Core 1 General

SATA
Serial Advanced Technology Attachment
3.0 Hardware

SC
Subscriber Connector
2.0 Networking

SCADA
Supervisory Control and Data Acquisition
Core 1 General

SCSI
Small Computer System Interface
Core 1 General

SIM
Subscriber Identity Module
1.0 Mobile Devices

SLA
Service-level Agreement
Core 1 General

SMB
Server Message Block
Core 1 General

SMS
Short Message Service
Core 1 General

SMTP
Simple Mail Transfer Protocol
2.0 Networking

SODIMM
Small Outline Dual In-line Memory Module
3.0 Hardware

SOHO
Small Office/Home Office
Core 1 General

SOP
Standard Operating Procedure
Core 1 General

SPF
Sender Policy Framework
Core 1 General

SPICE
Software Process Improvement and Capability Determination
Core 1 General

SQL
Structured Query Language
Core 1 General

SSD
Solid-state Drive
3.0 Hardware

SSH
Secure Shell
Core 1 General

SSID
Service Set Identifier
Core 1 General

SSO
Single Sign-on
Core 1 General

ST
Straight Tip
Core 1 General

TACACS
Terminal Access Controller Access-control System
Core 1 General

TCP
Transmission Control Protocol
2.0 Networking

TKIP
Temporal Key Integrity Protocol
2.0 Networking

TN
Twisted Nematic
Core 1 General

TOTP
Time-based One-time Password
Core 1 General

TPM
Trusted Platform Module
Core 1 General

UAC
User Account Control
Core 1 General

UDP
User Datagram Protocol
2.0 Networking

UEFI
Unified Extensible Firmware Interface
3.0 Hardware

UPnP
Universal Plug and Play
Core 1 General

UPS
Uninterruptible Power Supply
3.0 Hardware

USB
Universal Serial Bus
3.0 Hardware

UTM
Unified Threat Management
Core 1 General

VA
Vertical Alignment
Core 1 General

VDI
Virtual Desktop Infrastructure
4.0 Virtualization and Cloud

VGA
Video Graphics Array
Core 1 General

VLAN
Virtual LAN [Local Area Network]
2.0 Networking

VNC
Virtual Network Computer
2.0 Networking

VoIP
Voice over Internet Protocol
2.0 Networking

VPN
Virtual Private Network
2.0 Networking

VRAM
Video Random-access Memory
3.0 Hardware

WAN
Wide Area Network
2.0 Networking

WinRM
Windows Remote Management
Core 1 General

WISP
Written Internet Service Provider
Core 1 General

WLAN
Wireless LAN [Local Area Network]
2.0 Networking

WPA
Wi-Fi Protected Access
2.0 Networking

WWAN
Wireless Wide Area Network
2.0 Networking

XDR
Extended Detection and Response
Core 1 General

XFS
Extended File System
Core 1 General

XXS
Cross-site Scripting
Core 1 General

1G
First generation Cellular Technology with 30 KHz Frequency and a Speed of 2 Kbps
1.0 Mobile Devices

2G
Second-generation mobile phone service, popular in the 1990s. Cellphones used a digital network with multiplexing allowing data use alongside phone calls. Uses a General Packet Radio Service (GPRS) to get its speeds similar to dial-up. Provided SMS and text messaging, International roaming, conferencing calling, and using the Internet. Introduced Enhance Data Rates for GSM Evolution (EDGE) and brought data rates up to 1 Mbps. Operates at a frequency of 1800 MHz and a speed of 14.4-64 Kbps.
1.0 Mobile Devices

3G
3rd generation cellular technology that came with WCDMA, HSPA, and HSPA+. Operates at frequencies of 1.6-2 GHz and speeds of 144 Kbps-2 Mbps
1.0 Mobile Devices

4G
4th generation cellular technology operating at frequencies of 2-8GHz and speeds of 100 Mbps - 1 Gbps
1.0 Mobile Devices

5G
5th generation cellular technology with a low-band (600-800 MHz / 30-250 Mbps), mid-band (2.5-3.7 GHz / 100-900 Mbps), and high-band (25-39 GHz / 10 Gbps).
1.0 Mobile Devices

802
Operated in the 2.4 GHz spectrum at speeds of just 1 to 2 Mbps. Released in the 1990s, and wasn't used commercially.
Core 1 General

AC
Alternating Current
Core 1 General

ALU
Arithmetic Logic Unit
Core 1 General

AMD-V
AMD's Virtualization Support
Core 1 General

BD
Blu-ray Disc
Core 1 General

CLI
Command-Line Interface
Core 1 General

CMOS
Complementary Metal-Oxide Semiconductor
Core 1 General

DC
Direct Current
Core 1 General

DDR2
Higher Latency and faster access to external bus than DDR
Core 1 General

DDR3
Runs at a lower voltage and at a higher speed than DDR2. Has a throughput of 6.4 to 17 GB/s with a maximum module size of 8 GB per memory module.
3.0 Hardware

DDR4
12.8 to 25.6 GB/s of throughput 32 GB per module
Core 1 General

DDR5
38.4 to 51.2 GB/s of throughput 128 GB per module
Core 1 General

DOCSIS 4.0
Newer DOCSIS version with download speeds of up to 10 Gbps and upload speeds of up to 6 Gbps
Core 1 General

DP
DisplayPort
Core 1 General

DVD
Digital Versatile Disc
Core 1 General

GUI
Graphical User Interface
Core 1 General

ISA
Instruction Set Architecture
Core 1 General

LGA
Land Grid Array
Core 1 General

M.2
A compact expansion-card and storage-device form factor
3.0 Hardware

M.2 SSD
Like a memory chip, small, sleek and light to use in a laptop
3.0 Hardware

NGINX
Reverse proxy, load balancer, mail proxy, and HTTP cache
Core 1 General

NIC LED
Physically Indicates the computer's connection status, activity, and speed. The link light shows a valid link. The activity light blinks when sending or receiving data. The third light indicates the operating speed, 10 Mbps (off), 100 Mbps (Orange), 1000 Mbps (Green)
Core 1 General

PCI-X
64-bit expansion card (133 MHz)
3.0 Hardware

PGA
Pin Grid Array
Core 1 General

PSU
Power Supply Unit
3.0 Hardware

RAID 0
RAID for striping. No redundancy. Requires two mass storage devices
3.0 Hardware

RAID 1
RAID for mirroring and redundancy. Required two mass storage devices.
3.0 Hardware

RAID 10
RAID that combines striping and mirroring. Requires four mass storage devices
3.0 Hardware

RAID 5
RAID for redundancy through parity memory. Requires three mass storage devices.
3.0 Hardware

RDIMM
Registered Dual Inline Memory Module. Supports ECC and parity memory
3.0 Hardware

RISC
Reduced Instruction Set Computer
Core 1 General

ROM
Read-Only Memory
3.0 Hardware

SFF
Small Form Factor
Core 1 General

UDIMM
Unbuffered Dual Inline Memory Module. Non-parity memory.
3.0 Hardware

USB 4.0
USB with a transfer rate of 40 Gbps
3.0 Hardware

USB-C
Modern version of USB that operates at USB 3.0 speeds and can provide data
3.0 Hardware

VM
Virtual Machine
4.0 Virtualization and Cloud

ZIF
Zero Insertion Force
Core 1 General