no AccessAn access level with which users have no access to a Notes application; they cannot even add the application icon to their workspaces.
no circuit (NC)A call-disposition category for a call attempt that does not find an available outgoing trunk. [T1.207-1998]
no circuit double prime (NC&qout;)An SIT (special information tone) classification for call attempts that fail to find an available long distance service provider outgoing trunk. [T1.
no circuit prime (NC')An SIT (special information tone) classification for call attempts that fail to find an available Local Service Provider outgoing trunk. [T1.207-1998]
no-arg constructorA constructor that takes no arguments. By default, all classes without an explicit constructor have a default no-arg constructor with public access.
no-follow directiveA directive in a Web page that instruct robots (such as the Web crawler) to not follow links found in those pages.
no-index directiveA directive in a Web page that instruct robots (such as the Web crawler) to not include the contents of those pages in the index.
no-lone zone[An] Area, room, or space that, when staffed, must be occupied by two or more appropriately cleared individuals who remain within sight of each other.
NOAANational Oceanic and Atmospheric Administration
nodal clockThe principal clock or alternate clock located at a particular node that provides the timing reference for all major functions at that node.
nodeAny device connected to network. PCs, servers, and printers are all nodes on the network.
Node Attribute Table / Arc Attribute Table (NAT)(NAT)A table containing attributes for node coverage features. For each node, the NAT contains a reference to one of the arcs it connects to, an internal node…
node match toleranceThe minimum radial distance within which two nodes will be joined (matched) to form one node.
NoEchoA property of AWS CloudFormation parameters that will prevent the otherwise default reporting of names and values of a template parameter.
NofollowAttribute used to prevent a link from passing link authority. Commonly used on sites with user generated content, like in blog comments.
Noframes tagalternative non-framed HTML on a frameset page for very old, non-frames capable web browsers and search engine spiders.
NoiseAny unwanted sound that interferes with speech and hearing, causes damage to hearing, or annoys a person.
noise currentInterfering and unwanted electrical currents in a device or system. 2. In optical communications, the rms component of the optical detector output…
noise equivalent power (NEP)At a given data-signaling rate or modulation frequency, operating wavelength, and effective noise bandwidth, the radiant power that produces a…
noise fieldAn indication of the level of background noise that the terminating end-point may play out in the absence of packets. [T1.312-1991]
noise figure (NF)Of an active device, over the bandwidth of interest, the contribution by the device itself to thermal noise at its output.
noise levelThe noise power, usually relative to a reference. Note: Noise level is usually measured in dB for relative power or picowatts for absolute power.
noise powerThe power generated by a random electromagnetic process. 2. Interfering and unwanted power in an electrical device or system. 3.
noise power densityThe noise power in a bandwidth of 1 Hz, i.e., the noise power per hertz at a point in a noise spectrum.
noise suppressionReduction of the noise power level in electrical circuits. 2. The process of automatically reducing the noise output of a receiver during periods when no…
noise temperatureAt a pair of terminals, the temperature of a passive system having an available noise power per unit bandwidth at a specified frequency equal to that of…
noise voltageInterfering and unwanted voltage in an electronic device or system. 2. In optical communications, the rms component of the optical detector output…
noise weightingA specific amplitude-vs.-frequency characteristic that permits a measuring set to give numerical readings that approximate the interfering effects to any…
noise windowA notch, i.e., a dip, in the noise frequency spectrum characteristic of a device, such as a transmitter, receiver, channel, or amplifier, from external…
noisy black1. In facsimile or display systems, such as television, a nonuniformity in the black area of the image, i.e.
noisy white1. In facsimile or display systems, such as television, a nonuniformity in the white area of the image, i.e.
nominal bandwidthThe widest band of frequencies, inclusive of guard bands, assigned to a channel.
nominal bit stuffing rateThe rate at which stuffing bits are inserted when both the input and output bit rates are at their nominal values.
nominal linewidthIn facsimile systems, the average separation between centers of adjacent scanning or recording lines.
Non Material SolutionSolutions to mission needs ( warfighting , deficiencies) that can be satisfied by changes in doctrine, tactics, operational concepts, training, or…
Non- Developmental Item (NDI)(1) Any item of supply that is available in the commercial marketplace; or (2) Any previously developed item of supply that is in use by a department or…
non-call associated signaling (NCAS)Signaling that is independent of an end-to-end bearer connection, including support for the functions of registration, authentication, and validation.
Non-cooperative UserAn individual who is not aware that his/her biometric sample is being collected.
non-current recordA record no longer required for the day-to-day conduct of an active business.
non-fixed accessIn personal communications service (PCS), terminal access to a network in which there is no set relationship between a terminal and the access interface.
non-modalA dialog is non-modal if its parent application is not blocked from further activity while the dialog is being shown. See modal.
Non-repudiationAssurance that the sender of information is provided with proof of delivery and the recipient is provided with proof of the senders identity, so neither…
non-return-to-zero (NRZ)A code in which "1s" are represented by one significant condition and "0s" are represented by another, with no neutral or rest condition, such as a zero…
non-return-to-zero mark (NRZ-M)A binary encoding scheme in which a signal parameter, such as electric current or voltage, undergoes a change in a significant condition or level every…
non-return-to-zero space (NRZ-S)A binary encoding scheme in which a signal parameter, such as electric current or voltage, undergoes a change in a significant condition or level every…
non-transparent loopbackA loopback in which the signal transmitted beyond the loopback point (the forward signal) when the loopback is activated, is not the same as the received…
nonassociated common-channel signalingA form of common-channel signaling where the signaling channel serves one or more trunk groups, at least one of which terminates at a point other than the…
nonassociated mode of signalingThe signaling mode in which messages involving two (nonadjacent) signaling points are communicated between them over two or more signaling links in tandem…
nonblocking switchA switch that has enough paths across it that an originated call can always reach an available line without encountering a busy condition.
NonceA value used in security protocols that is never repeated with the same key. For example, challenges used in challenge-response authentication protocols…
noncentralized operationOperation that uses a control discipline for multipoint data communication links in which transmission may be between tributary stations or between the…
noncompliant computerA computer that does not meet the NAP health requirements that are defined for a network.
Nonconforming End OfficeOffice that is not yet equipped or incapable of being equipped, for provision of originating and terminating Feature Group D LATA access service.
nonlinear distortionDistortion caused by a deviation from a linear relationship between specified input and output parameters of a system or component.
nonlinear scatteringDirect conversion of a photon from one wavelength to one or more other wavelengths.
nonoperational loadAdministrative, support, and housing power requirements. Synonym utility load.
Nonpersistent DiskAll disk writes issued by software running inside a virtual machine with a nonpersistent virtual disk appear to be written to disk, but are in fact…
nonrecordItem that is not usually included within the scope of official records (e.g., convenience file, day file, reference material, and draft) Document not…
nonrecord materialMaterial not usually included within the definition of records, such as unofficial copies of documents that are kept only for convenience of reference…
Nonrecurring Costs(1) Costs that are not proportional to the number of units produced. (2) A one time cost that will occur on a periodic basis for the same organization.
nonrepudiation1. The capability, in security systems, that guarantees that a message or data can be proven to have originated from a specific person. 2.
nonsynchronous data transmission channelA data transmission channel in which separate timing information is not transferred between the data terminal equipment (DTE) and the data circuit…
Nonsynchronous Test LineThe term "Nonsynchronous Test Line" denotes an arrangement in step-by-step end offices which provides operational tests which are not as complete as those…