CompTIA IT Fundamentals Acronyms

AC

Alternating Current

BD-ROM

Blu-ray Disc Read-Only Memory

BIOS

Basic Input/Output System

CAD

Computer-Aided Design

CAM

Computer-Aided Manufacturing

CD

Compact Disc

CD-ROM

Compact Disc-Read-Only Memory

CD-RW

Compact Disc-Rewritable

CPU

Central Processing Unit

CRT

Cathode-Ray Tube

DC

Direct Current

DDR

Double Data Rate

DDR RAM

Double Data Rate Random-Access Memory

DDR SDRAM

Double Data Rate Synchronous Dynamic Random-Access Memory

DHCP

Dynamic Host Configuration Protocol

DIMM

Dual Inline Memory Module

DNS

Domain Name Services or Domain Name Server

DSL

Digital Subscriber Line

DVD

Digital Video Disc or Digital Versatile Disc

DVD-DL

Digital Video Disc Dual Layer or Digital Versatile Disc Dual Layer

DVD-R

Digital Video Disc-Recordable

DVD-RAM

Digital Video Disc-Random-Access Memory

DVD-ROM

Digital Video Disc-Read-Only Memory

DVD-RW

Digital Video Disc-Rewritable

DVI

Digital Visual Interface

EMI

Electromagnetic Interference

EMP

Electromagnetic Pulse

eSATA

External Serial Advanced Technology Attachment

ESD

Electrostatic Discharge

FAT

File Allocation Table

FAT32

32-bit File Allocation Table

FTP

File Transfer Protocol

FTPS

File Transfer Protocol over SSL

Gb

Gigabit

GB

Gigabyte

GHz

Gigahertz

GPS

Global Positioning System

HDD

Hard Disk Drive

HDMI

High Definition Media Interface

HTML

Hypertext Markup Language

HTTP

Hypertext Transfer Protocol

HTTPS

Hypertext Transfer Protocol over SSL

IDE

Integrated Drive Electronics

IMAP

Internet Mail Access Protocol

IP

Internet Protocol

IR

Infrared

ISDN

Integrated Services Digital Network

ISP

Internet Service Provider

Kb

Kilobit

KB

Kilobyte or Knowledge Base

LAN

Local Area Network

Mb

Megabit

MB

Megabyte

MHz

Megahertz

MIDI

Musical Instrument Digital Interface

MP3

Moving Picture Experts Group Layer 3 Audio

MP4

Moving Picture Experts Group Layer 4

MPEG

Moving Picture Experts Group

NAS

Network Attached Storage

NFC

Near Field Communications

NIC

Network Interface Card

OEM

Original Equipment Manufacturer

OS

Operating System

PC

Personal Computer

PCI

Peripheral Component Interconnect

PCIe

Peripheral Component Interconnect express

PCIX

Peripheral Component Interconnect Extended

PII

Personally Identifiable Information

POP

Post Office Protocol

POP3

Post Office Protocol 3

POTS

Plain Old Telephone System

PS/2

Personal System 2

PSU

Power Supply Unit

RAM

Random-Access Memory

RGB

Red-Green-Blue

RJ

Registered Jack

RJ-11

Registered Jack Function 11

RJ-45

Registered Jack Function 45

RoHS

Recycling of Hazardous Substances

SATA

Serial Advanced Technology Attachment

SD Card

Secure Digital Card

SFTP

Secure File Transfer Protocol

SID

System Identifier

SMTP

Simple Mail Transfer Protocol

SOHO

Small Office, Home Office

SSD

Solid State Drive

SSID

Service Set Identifier

SSL

Secure Sockets Layer

TB

Terabyte

TCP

Transmission Control Protocol

TCP/IP

Transmission Control Protocol/Internet Protocol

UPS

Uninterruptable Power Supply

URL

Uniform Resource Locator

USB

Universal Serial Bus

VGA

Video Graphics Array

VoIP

Voice over Internet Protocol

VTC

Video Teleconference

WAN

Wide Area Network

WAP

Wireless Application Protocol

WEP

Wired Equivalency Privacy

WIFI

Wireless Fidelity

WiMAX

Worldwide Interoperability for Microwave Access, Inc.

WLAN

Wireless Local Area Network

WPA

Wireless Protected Access

WPA2

Wireless Protected Access 2

WPS

Wireless Protected Setup