CompTIA A+ Acronyms
AAA Authentication, Authorization, and Accounting
AC Alternating Current
ACL Access Control List
ADF Automatic Document Feeder
AES Advanced Encryption Standard
AP Access Point
APFS Apple File System
APIPA Automatic Private Internet Protocol Addressing
APK Android Package
ARM Advanced RISC [Reduced Instruction Set Computer] Machine
ARP Address Resolution Protocol
ATA Advanced Technology Attachment
ATM Asynchronous Transfer Mode
ATX Advanced Technology Extended
AUP Acceptable Use Policy
BIOS Basic Input/Output System
BSOD Blue Screen of Death
BYOD Bring Your Own Device
CAD Computer-aided Design
CAPTCHA Completely Automated Public Turing Test to Tell Computers and Humans Apart
CD Compact Disc
CDFS Compact Disc File System
CDMA Code-Division Multiple Access
CERT Computer Emergency Response Team
CIFS Common Internet File System
CMD Command Prompt
CMOS Complementary Metal-Oxide Semiconductor
CPU Central Processing Unit
CRL Certificate Revocation List
DC Direct Current
DDoS Distributed Denial of Service
DDR Double Data Rate
DHCP Dynamic Host Configuration Protocol
DIMM Dual Inline Memory Module
DKIM DomainKeys Identified Mail
DMA Direct Memory Access
DMARC Domain-based Message Authentication, Reporting, and Conformance
DNS Domain Name System
DoS Denial of Service
DRAM Dynamic Random-Access Memory
DRM Digital Rights Management
DSL Digital Subscriber Line
DVI Digital Visual Interface
DVI-D Digital Visual Interface-Digital
ECC Error Correcting Code
EFS Encrypting File System
EMI Electromagnetic Interference
EOL End-of-Life
eSATA External Serial Advanced Technology Attachment
ESD Electrostatic Discharge
EULA End-User License Agreement
exFAT Extensible File Allocation Table
ext Extended File System
FAT File Allocation Table
FAT12 12-bit File Allocation Table
FAT16 16-bit File Allocation Table
FAT32 32-bit File Allocation Table
FSB Front-Side Bus
FTP File Transfer Protocol
GFS Grandfather-Father-Son
GPS Global Positioning System
GPT GUID [Globally Unique Identifier] Partition Table
GPU Graphics Processing Unit
GSM Global System for Mobile Communications
GUI Graphical User Interface
GUID Globally Unique Identifier
HAL Hardware Abstraction Layer
HAV Hardware-assisted Virtualization
HCL Hardware Compatibility List
HDCP High-bandwidth Digital Content Protection
HDD Hard Disk Drive
HDMI High-Definition Multimedia Interface
HSM Hardware Security Module
HTML Hypertext Markup Language
HTTP Hypertext Transfer Protocol
HTTPS Hypertext Transfer Protocol Secure
I/O Input/Output
IaaS Infrastructure as a Service
ICR Intelligent Character Recognition
IDE Integrated Drive Electronics
IDS Intrusion Detection System
IEEE Institute of Electrical and Electronics Engineers
IMAP Internet Mail Access Protocol
IOPS Input/Output Operations Per Second
IoT Internet of Things
IP Internet Protocol
IPS Intrusion Prevention System
IPS In-plane Switching
IPSec Internet Protocol Security
IR Infrared
IrDA Infrared Data Association
IRP Incident Response Plan
ISO International Organization for Standardization
ISP Internet Service Provider
ITX Information Technology eXtended
KB Knowledge Base
KVM Keyboard-Video-Mouse
LAN Local Area Network
LC Lucent Connector
LCD Liquid Crystal Display
LDAP Lightweight Directory Access Protocol
LED Light-emitting Diode
MAC Media Access Control/Mandatory Access Control
MAM Mobile Application Management
MAN Metropolitan Area Network
MBR Master Boot Record
MDM Mobile Device Management
MFA Multifactor Authentication
MFD Multifunction Device
MFP Multifunction Printer
MMC Microsoft Management Console
MOU Memorandum of Understanding
MSDS Material Safety Data Sheet
MSRA Microsoft Remote Assistance
MX Mail Exchange
NAC Network Access Control
NAT Network Address Translation
NDA Non-disclosure Agreement
NetBIOS Networked Basic Input/Output System
NetBT NetBIOS over TCP/IP [Transmission Control Protocol/Internet Protocol]
NFC Near-field Communication
NFS Network File System
NIC Network Interface Card
NTFS New Technology File System
NVMe Non-volatile Memory Express
OCR Optical Character Recognition
OLED Organic Light-emitting Diode
ONT Optical Network Terminal
OS Operating System
PaaS Platform as a Service
PAN Personal Area Network
PC Personal Computer
PCIe Peripheral Component Interconnect Express
PCL Printer Command Language
PE Preinstallation Environment
PII Personally Identifiable Information
PIN Personal Identification Number
PKI Public Key Infrastructure
PoE Power over Ethernet
POP3 Post Office Protocol 3
POST Power-on Self-Test
PPP Point-to-Point Protocol
PRL Preferred Roaming List
PSU Power Supply Unit
PXE Preboot Execution Environment
RADIUS Remote Authentication Dial-in User Service
RAID Redundant Array of Independent (or Inexpensive) Disks
RAM Random-access Memory
RDP Remote Desktop Protocol
RF Radio Frequency
RFI Radio-Frequency Interference
RFID Radio-Frequency Identification
RJ11 Registered Jack Function 11
RJ45 Registered Jack Function 45
RMM Remote Monitoring and Management
RTO Recovery Time Objective
SaaS Software as a Service
SAN Storage Area Network
SAS Serial Attached SCSI [Small Computer System Interface]
SATA Serial Advanced Technology Attachment
SC Subscriber Connector
SCADA Supervisory Control and Data Acquisition
SCP Secure Copy Protection
SCSI Small Computer System Interface
SDN Software-defined Networking
SFTP Secure File Transfer Protocol
SIM Subscriber Identity Module
SIMM Single Inline Memory Module
S.M.A.R.T. Self-monitoring Analysis and Reporting Technology
SMB Server Message Block
SMS Short Message Service
SMTP Simple Mail Transfer Protocol
SNMP Simple Network Management Protocol
SNTP Simple Network Time Protocol
SODIMM Small Outline Dual Inline Memory Module
SOHO Small Office/Home Office
SPF Sender Policy Framework
SQL Structured Query Language
SRAM Static Random-access Memory
SSD Solid-State Drive
SSH Secure Shell
SSID Service Set Identifier
SSL Secure Sockets Layer
SSO Single Sign-on
ST Straight Tip
STP Shielded Twisted Pair
TACACS Terminal Access Controller Access-Control System
TCP Transmission Control Protocol
TCP/IP Transmission Control Protocol/Internet Protocol
TFTP Trivial File Transfer Protocol
TKIP Temporal Key Integrity Protocol
TLS Transport Layer Security
TN Twisted Nematic
TPM Trusted Platform Module
UAC User Account Control
UDP User Datagram Protocol
UEFI Unified Extensible Firmware Interface
UNC Universal Naming Convention
UPnP Universal Plug and Play
UPS Uninterruptible Power Supply
USB Universal Serial Bus
UTM Unified Threat Management
UTP Unshielded Twisted Pair
VA Vertical Alignment
VDI Virtual Desktop Infrastructure
VGA Video Graphics Array
VLAN Virtual LAN [Local Area Network]
VM Virtual Machine
VNC Virtual Network Computer
VoIP Voice over Internet Protocol
VPN Virtual Private Network
VRAM Video Random-access Memory
WAN Wide Area Network
WEP Wired Equivalent Privacy
WISP Wireless Internet Service Provider
WLAN Wireless LAN [Local Area Network]
WMN Wireless Mesh Network
WPA WiFi Protected Access
WWAN Wireless Wide Area Network
XSS Cross-site Scripting