NAC       Network Adapter Card

NACD      National Association of Computer Dealers

NACS      National Advisory Committee on Semiconductors

NAE       Not Above or Equal

NAK       Negative Acknowledgment

NAL        Novell Application Launcher [Novell]

NAM       Number Assignment Module

.NAME     Names-Individuals (Domain Name) [Internet]

NAMPS     Narrow-Band Analog Mobile Phone Service [Motorola]

NAND      Not And

NANO      One thousand-millionth

NAP       Network Access Point

NAPLPS    North American Presentation Level Protocol

          Syntax (graphics)

NAS       Network Access Server + Network Application Support [DEC] +

          Network Attached Storage

NASA      National Aeronautics and Space Administration

NASDAQ    National Association of Securities Dealers

          Automatic Quotation

NASI      NetWare Asynchronous Services Interface [Novell]

NASIRC    NASA Automated Systems Internet Response Capability

NASKER    NASA Ames Kernel (benchmark)

NAT       Network Adddress Transformation/Translators

NAU       Network Addressable Unit

NAV        Navigator

NAVSTAR   Navigation Satellite Timing and Ranging

NAWS      Negotiate About Window Size

NBE       Not Below or Equal

NBI       Nothing But Initials

NBMA      Non-Broadcast Multi Access

NBS       Narrowband Socket + National Bureau of Standards +

          Numeric Backspace

NC        Network Computer + No Carry + Numerical Control

NCA       Network Communications Adapter +

          Network Computing Architecture [Oracle]

NCC       Network Control Center

NCD       Network Computing Device

.NCF      Netware Command File [Novell]

NCGA      National Computer Graphics Association

NCIC      National Crime Information Center

NCMT    * Numerical Control for Machine Tools

NCOS      Network Computer Operating System

NCP       NetWare Core Protocol + Not Copy Protected +

          Network Control Processor/Program/Protocol

NCR       National Cash Register (Company)

NCSA      National Center for Supercomputing Applications

NCSC      National Computer Security Center

NCSI      Network Communications Services

          Interface [Network Products Corp.]

NDB       Non-Directional Beacon

NDDK      Network Device Development Kid [Microsoft]

NDEF      Not to be Defined

NDIS      Network Device/Driver Interface Specification

NDL       Network Data Language

NDMP      Network Data Management Protocol

NDN       Non-Delivery Notice

NDP       Numeric Data Processor

NDR       Network Data Representation

NDRO      Non-Destructive Read Out

NDS       NetWare Directory Service [Novell]

.NDX      Index (file name extension)

NEC       Nippon Electric Company

NED       NASA Extragalactic Database [NASA]

NEG       Negative + Negate

NEMA      National Electrical Manufacturers Association

NEP       Network Entry Point

NES       National Education Supercomputer

NEST      Novell Embedded Systems Technology [Novell]

.NET      Networks (Domain Name) [Internet]

NetBIOS   Network Basic Input/Output System [IBM]

NetBEUI   NetBIOS Extended User Interface [IBM]

NETMON    Network Monitor

.NEW      New Information (file name extension)

NEWS      NetWare Early Warning System [Frye Computer] +

          Network Extensible Window System

NEWS.     Current events [USENET Newsgroup Category]

NEXT      Near-End Crosstalk

NFF       No Fault Found

NFS       Network File System [Sun]

NG        No Good

NGE       Not Greater or Equal

NGI       Next-Generation Internet

NHC       National Hurricane Center

NHR       National Handwriting Recognition

NHRP      Next Hop Resolution Protocol

N/I       Non-Interlaced

NIA       Next Instruction Address

NIC       Network Information Center [Internet] +

          Network Interface Card +

          Numeric Intensive Computing

NICAD     Nickel-Cadmium

NICOLAS   Network Information Center OnLine Aid System [NASA]

NID       New Interactive Display [NEC] + Next ID

NIDS      Network Intrusion Detection System [Unisys]

NII       National Information Infrastructure

NIM       Network Installation Management [IBM]

NIMH      Nickel-Metal Hydride

NIO       Native Input/Output

NIPS      Network I/Os Per Second

NIR       Network Information Retrieval

NIS       Network Information Service [Unix]

N-ISDN    Narrowband ISDN + National ISDN

NISO      National Information Standards Organization

NISP      Networked Information Services Project

NIST      National Institute for Standards and Technology

NITC      National Information Technology Center

NIU       Network Interface Unit

NJE       Network Job Entry (protocol) [IBM]

NL        New Line

NLB        Network Load Balancing [Microsoft]

NLE       Not Less or Equal

NLM       NetWare Loadable Module [Netware]

NLP       Natural-Language Processing

NLQ       Near Letter Quality

NLSFUNC   National Language Support Function

NLV       National Language Version [IBM]

NMI       Non-Maskable Interrupt

NMM       NetWare Management Map [NetWare]

NMOS      Negative Channel Metal-Oxide Semiconductor

NMP       Network Management Protocol [AT&T]

NMS       Network Management System [Novell]

NN        Network Node + No News [Internet]

NNI       Network to Network Interface

NNM       Network Node Manager

NNTP      Network News Transfer Protocol [Internet]

NOC       Network Operations Center

.NOM      Individual with Personal Site (Domain Mame) [Internet]

NOP       No Operation

NOPAC     Network OPAC

NOR       Not Or

NOS       Network Operating System

NPA       Network Printer Alliance + Numbering Plan Area

NPI       Network Printer Interface

NPL       Nonprocedural Language

NPS       Novell Productivity Specialist [Novell]

NPT       Non-Programmable Terminal

NPTN      National Public Telecomputing Network

NPU       Natural Processing Unit

NPX       Numeric Processor Extension

NQS       Network Queuing System [Cray]

NRC       National Research Council (Canada)

NREN      National Research and Education Network

NRM       Network Resource Manager

NRZ       Not Return to Zero

NRZI      Non Return to Zero Inverted

NS        Nanosecond (one-billionth of a second) +

          National Semiconductor (as in Ns16550 UART) +

          Network Supervisor + Non Stop

NSAP      Network Service Access Point

NSAPI     Netscape Server API [Netscape]

NSA POLY  National Security Agency Polygraph

NSERC     National Sciences and Engineering Research Council

(Canada)

NSF       National Science Foundation

NSFNET    National Science Foundation Network

NSI       NASA Science Internet

NSLOOKUP  Name Server Lookup [Unix]

NSM       Netscape Server Manager [Netscape]

NSP       Native Signal Processing [Intel] +

          Network Service Provider

NSSC      NASA Standard Spacecraft Computer

NSTC      National Science and Technology Council

NSTL      National Software Testing Labs

NT        New Technology [Microsoft]

NT-1      Network Terminator Type 1

NTAS      NT Advanced Server [Microsoft]

NTF       No Trouble Found

NTFS      New Technology File System [Microsoft]

NTIA      National Telecommunications and

          Information Administration

NTIS      National Technical Information Service

NTP       Network Time Protocol

NTRAS     NT Remote Access Services [Microsoft]

NTSA      NetWare Telephony Services Architecture [Novell]

NTSC      National Television Standards Committee

NTU       Network Termination Unit

NUI       Network User Identification +

          Network User Interface +

          Notebook User Interface [Go Corporation]

NUL       Null + (dummy device) + (no device)

NUMA      Non-Uniform Memory Access

NV        No Overflow

NVM       Non-Volatile Memory

NVOD      Near-Video On Demand

NVP       Nominal Velocity of Propagation

NVRAM     Non-Volatile Random Access Memory

NVT       Network Virtual Terminal +

          Novell Virtual Terminal [Novell]

NWS       NetWare Web Server [Netware]

NYM       Anonymous