N
 | NA Numerical Aperture
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| NAB National Association of Broadcasters
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| NAD Network Attached Device
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| NAK Negative AcKnowledge
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| NAMP North American Nubmering Plan
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| NAMPS Narrowband Advanced Mobile Phone Service Combines the AMPS transmission standard with ditital signalling information to triple the capacity
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| NAP Network Access Points
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| NAP Non significant Address Part
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| NAS Network Attached Storage Hard disk storage with its own network address and file system
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| NAS Network Access Server
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| NASSL Network Accessible Service Specification Language An XML based language that defines what is required to interface to the services at execution time allowing different web services to work together
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| NAT Network Address Translation
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| NAU Network Addressable Units
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| NBMA Non Broadcast Muliple Access
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| NC Network Computer Cut down version of a PC at a fraction of the price
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| NCB Network Control Block
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| NCOS Network Class Of Service
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| NCP Network Control Program
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| NCTA National Cable Television Association
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| NCTI National Cable Television Institute
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| NDIS Network Driver Interface Specification
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| NE Network Element
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| NEC National Electrical Code
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| NEDA National Electronics Distributors Association
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| NEMA National Electronics Manufacturers Association
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| NESC National Electrical Safety Code
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| NETBEUI NETBios Enhanced User Interface
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| NETBIOS NETwork adaptor Basic Input Output System
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| NEXT Near End CROSS Talk
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| NFS Network File System Protocol to allow heterogeneous systems to share disk resources
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| NHDR Network layer HeaDeR
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| NHRP Next Hop Resolution Protocol Term used in conjunction with the X.25 protocol
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| NIC Network Interface Card Allows communication between PC / Server and the network
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| NiCd Nickel Cadmium Rechargeable battery good for around 800 charges
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| NID Network Interface Device
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| NIM Network Interface Module
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| NiMH Nickel Metal Hydride Type of Battery used in portable computers capable of holding a greater charge than NiCd
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| NIS Network Information Service
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| NIU Network Interface Unit
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| NLPID Network Layer Protocol IDentifier
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| NLQ Near Letter Quality Print term
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| NMI Non Maskable Interrupts
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| NML Network Management Layer
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| NMS Network Management System
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| NMV Network Managed Volumes Logical volumes which can be assigned to applications
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| NNI Network Node Interface
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| NOC Network Operations Centre Usually a centre of excellence dedicated to the support and monitoring of a network
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| NOS Network Operating System E.G Microsoft NT, Novell Netware
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| NP Network Provider
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| NPA Numbering Plan Area
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| NPR Noise to Power Ratio
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| NRZ Non Return to Zero
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| NRZI Non Return to Zero Inverted
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| NSAP Network Service Access Point
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| NSP Native Signal Processing Software to enhance multimedia performance |
| NSP Network Service Provider
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| NTC |
Network Transmission Committee
| NTSC |
National Television Standards Committee
| NUI |
Network User Identification
| NVM |
NonVolatile Memory
| NVOD |
Near Video On Demand
| NVRAM |
Non Volatile Random Access Memory