Full Form of hardware and networking devices

In CompTIA N+ or A+ exam you may have a question asking for full form. Beside exam in networking world we have to face several situation where need the extended or complete form of abbreviated form. Here we tried to list few most of them with their full form.

AC alternating current ACPI advanced configuration and power interface ACT activity ADSL asymmetrical digital subscriber line AGP accelerated graphics port AMD advanced micro devices AMR audio modem riser APIPA automatic private internet protocol addressing APM advanced power management ARP address resolution protocol ASR automated system recovery AT advanced technology ATA advanced technology attachment ATAPI advanced technology attachment packet interface ATM asynchronous transfer mode ATX advanced technology extended BIOS basic input/output system BNC Bayonet-Neill-Concelman or British Navel Connector BRI basic rate interface BTX balanced technology extended CCD charged coupled device CD compact disc CD-ROM compact disc-read-only memory CD-RW compact disc-rewritable CDFS compact disc file system CMOS complementary metal-oxide semiconductor CNR communication network riser COM1 communication port 1 CPU central processing unit CRIMM continuity-rambus inline memory module CRT cathode-ray tube DAC discretionary access control DB-25 serial communications D-shell connector, 25 pins DB-9 9 pin D shell connector DC direct current DDOS distributed denial of service DDR double data-rate DDR RAM double data-rate random access memory DDR SDRAM double data-rate synchronous dynamic random access memory DFS distributed file system DHCP dynamic host configuration protocol DIMM dual inline memory module DIN Deutsche Industrie Norm DIP dual inline package DLT digital linear tape DLP digital light processing DMA direct memory access DNS domain name service or domain name server DOS disk operating system or denial of service DPMS display power management signaling DRAM dynamic random access memory DSL digital subscriber line DVD digital video disc or digital versatile disc DVD-RAM digital video disc-random access memory DVD-ROM digital video disc-read only memory DVD-R digital video disc-recordable DVD-RW digital video disc-rewritable DVI digital visual interface ECC error correction code ECP extended capabilities port EEPROM electrically erasable programmable read-only memory EFS encrypting file system EIDE enhanced integrated drive electronics EISA extended industry standard architecture EMI electromagnetic interference EMP electromagnetic pulse EPROM erasable programmable read-only memory EPP enhanced parallel port ERD emergency repair disk ESD electrostatic discharge ESDI enhanced small device interface EVGA extended video graphics adapter/array EVDO evolution data optimized or evolution data only FAT file allocation table FAT12 12-bit file allocation table FAT16 16-bit file allocation table FAT32 32-bit file allocation table FDD floppy disk drive FERPA Family Educational Rights and Privacy Act Fn Function (referring to the function key on a laptop) FPM fast page-mode FRU field replaceable unit FT P file transfer protocol FQDN fully qualified domain name GB gigabyte GDI graphics device interface GHz gigahertz GUI graphical user interface GPRS general packet radio system GSM global system for mobile communications HAL hardware abstraction layer HCL hardware compatibility list HDD hard disk drive HDMi high definition media interface HPFS high performance file system HTML hypertext markup language HTTP hypertext transfer protocol HTTPS hypertext transfer protocol over secure sockets layer I/O input/output ICMP internet control message protocol ICS internet connection sharing ICR intelligent character recognition IDE integrated drive electronics IEEE Institute of Electrical and Electronics Engineers IIS Internet Information Services IMAP internet mail access protocol IP internet protocol IPCONFIG internet protocol configuration IPP internet printing protocol IPSEC internet protocol security IPX internetwork packet exchange IPX/SPX internetwork packet exchange/sequenced packet exchange IR infrared IrDA Infrared Data Association IRQ interrupt request ISA industry standard architecture ISDN integrated services digital network ISO Industry Standards Organization ISP internet service provider KB kilobyte LAN local area network LBA logical block addressing LC Lucent connector LCD liquid crystal display LDAP lightweight directory access protocol LED light emitting diode LIP or LiPoly lithium-ion polymer Li-on lithium-ion LPD/LPR line printer daemon / line printer remote LPT line printer terminal LPT1 line printer terminal 1 LPX low profile extended LVD low voltage differential MAC media access control MAN metropolitan area network MAPI messaging application programming interface Mb megabit MB megabyte MBR master boot record MBSA Microsoft Baseline Security Analyzer MCR multivariant curve resolution MFD multi-function device MFP multi-function product MHz megahertz MicroDIMM micro dual inline memory module MIDI musical instrument digital interface MIME multipurpose internet mail extension MLI multiple link interface MMC Microsoft management console MMX multimedia extensions MP3 Moving Picture Experts Group Layer 3 Audio MPEG Moving Picture Experts Group MSCONFIG Microsoft configuration MSDS material safety data sheet MUI multilingual user interface NAS network-attached storage NAT network address translation NetBIOS networked basic input/output system NetBEUI networked basic input/output system extended user interface NFS network file system NIC network interface card NiCd nickel cadmium NiMH nickel metal hydride NLI not logged in or natural language interface NLX new low-profile extended NNTP network news transfer protocol NTFS new technology file system NTLDR new technology loader NWLINK Netware Link OCR optical character recognition OEM original equipment manufacturer OMR optical mark recognition OS operating system OSR original equipment manufacturer service release PAN personal area network PATA parallel advanced technology attachment PC personal computer PCI peripheral component interconnect PCIe peripheral component interconnect express PCIX peripheral component interconnect extended PCL printer control language PCMCIA Personal Computer Memory Card International Association PDA personal digital assistant PGA pin grid array PGA2 pin grid array 2 PIN personal identification number PKI public key infrastructure PnP plug and play POP post office protocol POP3 post office protocol 3 POST power-on self test POTS plain old telephone service PPP point-to-point protocol PPTP point-to-point tunneling protocol PRI primary rate interface PROM programmable read-only memory PS/2 Personal System/2 connector PSTN public switched telephone network PVC permanent virtual circuit PXE preboot execution environment QoS quality of service RAID redundant array of independent (or inexpensive) discs RAM random access memory RAS remote access service RBAC role-based access control or rule-based access control RDRAM RAMBUS dynamic random access memory RF radio frequency RFI radio frequency interference RGB red green blue RIMM RAMBUS inline memory module RIP routing information protocol RIS remote installation service RISC reduced instruction set computer RJ registered jack RJ-11 registered jack function 11 RJ-45 registered jack function 45 RMA returned materials authorization ROM read only memory RS-232 or RS-232C recommended standard 232 RTC real-time clock SAN storage area network SATA serial advanced technology attachment SC subscription channel SCSI small computer system interface SCSI ID small computer system interface identifier SD card secure digital card SDRAM synchronous dynamic random access memory SEC single edge connector SFC system file checker SGRAM synchronous graphics random access memory SIMM single inline memory module SLI scalable link interface or system level integration or scanline interleave mode SMB server message block or small to midsize business SMTP simple mail transport protocol SNMP simple network management protocol SoDIMM small outline dual inline memory module SOHO small office/home office SP service pack SP1 service pack 1 SP2 service pack 2 SPDIF Sony-Philips digital interface format SPGA staggered pin grid array SPX sequenced package exchange SRAM static random access memory SSH secure shell SSID service set identifier SSL secure sockets layer ST straight tip STP shielded twisted pair SVGA super video graphics array SXGA super extended graphics array TB terabyte TCP transmission control protocol TCP/IP transmission control protocol/internet protocol TDR time domain reflectometer TFTP trivial file transfer protocol UART universal asynchronous receiver transmitter UDF user defined functions or universal disk format or universal data format UDMA ultra-direct memory access UDP user datagram protocol UL Underwriter’s Laboratory UNC universal naming convention UPS uninterruptible power supply URL uniform resource locator USB universal serial bus USMT user state migration tool UTP unshielded twisted pair UXGA ultra-extended graphics array VESA Video Electronics Standards Association VFAT virtual file allocation table VGA video graphics array VoIP voice over internet protocol VPN virtual private network VRAM video random access memory WAN wide area network WAP wireless application protocol WEP wired equivalent privacy WIFI wireless fidelity WINS windows internet name service WLAN wireless local area network WPA wireless protected access WUXGA wide ultra-extended graphics array XGA extended graphics array ZIF zero-insertion-force ZIP zigzag inline package