HTTP (HyperText Transfer Protocol)The underlying protocol used by the World Wide Web. HTTP defines how messages are formatted and transmitted, and what actions Web servers and browsers…
HTTP 301 Status Code DefinitionThe 301 status code means the URI requested has Moved Permanently and has been assigned a new URI. Any future requests should use one of the returned URIs.
HTTP 302 Status Code DefinitionThe 302 status code means that the document requested is Found however temporarily resides under a different URL.
HTTP 400 Status Code DefinitionThe 400 status code means a Bad Request stating that the server is not able to understand the document request due to a malformed syntax.
HTTP 401 Status Code DefinitionThe 401 status code means Unauthorized. This server requests user authentication prior to fulfilling the document request.
HTTP 403 Status Code DefinitionThe 403 status code means Forbidden. The server understood the request, however is refusing to fulfill it.
HTTP 404 Status Code DefinitionThe response error message 404 represents a document Not Found. This means that the client was able to communicate with the server, however could not find…
HTTP 410 Status Code DefinitionSimilar to a 404 Not Found error message, the 410 status code states that the requested document is intentionally gone, is no longer available and there…
HTTP 500 Status Code DefinitionThe 500 status code error message states that there was an internal server error which has prevented the document from being fulfilled.
HTTP 501 Status Code DefinitionThe 501 status code message is displayed when the server does not recognize the document request method.
HTTP Hypertext Markup LanguageHTTP stands for hypertext markup language and is the main markup language for creation of web pages.
HubA network device that connects multiple computers/peripherals together and allows them to share data.
Hub Transport server roleAn Exchange Server 2007 server role that provides routing within a single organizational network by using the Active Directory directory service site.
hubrisExcessive pride, the sort of thing Zeus zaps you for. Also the quality that makes you write (and maintain) programs that other people won't want to say…
HubsTopical hubs are sites which link to well trusted within their topical community.
Huffman codingA coding technique used to compact data by representing the more common events with short codes and the less common events with longer codes.
Human FactorsA body of scientific facts about human characteristics. The term covers all biomedical and psychosocial considerations; it includes, but is not limited…
Human Factors EngineeringThe design of man-made devices, systems, and environments to enhance their use by people. Also called human engineering, human factors, and ergonomics. 130
Human Intelligence (HUMINT)A category of intelligence derived from information collected and provided by human sources.
Human Systems IntegrationThe human considerations (human factors engineering, manpower, personnel, training, and safety and health hazards) that are integrated into the design…
Human-computer interfaceThe boundary across which physical interaction between a human being and the application platform takes place [POSIX.0].
Human-in-ControlHuman-in-Control provides for the positive control of automated system processes.
human-machine interface (HMI)Human-machine interface between user and terminal/system that consists of a physical section (electro-acoustic, electro-optic transducer, keys, etc.
HybridA class that is a mixture or combination of 2 or more classes. For example, a Druid can be viewed as a Warrior/Rogue/Priest hybrid.
hybrid balanceAn expression of the degree of electrical symmetry between two impedances connected to two conjugate sides of a hybrid set or resistance hybrid.
hybrid cableAn optical communications cable having two or more different types of optical fibers, e.g., single-mode and multimode fibers.
Hybrid CloudA computing environment combining both private (internal) and public (external) cloud computing environments.
hybrid coilA single transformer that effectively has three windings, and which is designed to be configured as a circuit having four branches, i.e.
hybrid communications networkA communications network that uses a combination of line facilities, i.e., trunks, loops, or links, some of which use only analog or quasi-analog signals…
hybrid computerA computer that processes both analog and digital data.
hybrid connectorA connector that contains contacts for more than one type of service. Note: Examples of hybrid connectors are those that have contacts for both optical…
hybrid couplerIn an antenna system, a hybrid junction used as a directional coupler. Note: The loss through a hybrid coupler is usually 3 dB.
hybrid fiber coaxial cable (HFC)A telecommunications cable in which optical fiber cable and coaxial cable constitute different portions of a network carrying broadband content (such as…
hybrid interface structureIn integrated services digital networks (ISDN), an interface structure that uses both labeled and positioned channels.
hybrid junctionA waveguide or transmission line arranged such that (a) there are four ports, (b) each port is terminated in its characteristic impedance, and (c) energy…
hybrid modeA mode consisting of components of both electrical and magnetic field vectors in the direction of propagation.
hybrid routingRouting in which numbering plans and routing tables are used to permit the collocation, in the same area code, of switches using a deterministic routing…
hybrid searchA combined boolean search and free text search.
hybrid setTwo or more transformers interconnected to form a network having four ports that are conjugate in pairs.
hybrid spread spectrumA combination of frequency hopping spread spectrum and direct-sequence spread spectrum. [NTIA]
hybrid systemA renewable energy system that includes two different types of technologies that produce the same type of energy; for e.g.
HydrographyScientific study of physical aspects of all waters on the Earth's surface. Water features in 7.
HydrolysisA chemical reaction that uses water to break down a compound.
hydroxyl ion absorptionIn optical fibers, the absorption of electromagnetic waves, including the near-infrared, due to the presence of trapped hydroxyl ions remaining from water…
HygroscopicAbsorbing or attracting moisture from the air.
Hyper-ThreadingA processor architecture feature that allows a single processor to execute multiple independent threads simultaneously.
hyperlinkA link - usually appearing as a highlighted word or picture within a hypertext document - that when clicked changes the active view, possibly to another…
hypermediaComputer-addressable files that contain pointers for linking to multimedia information, such as text, graphics, video, or audio in the same or other…
HyperTextText that includes links or shortcuts to other documents or views, allowing the reader to easily jump from one view to a related view in a non-linear…
HyperText Markup LanguageThe HyperText Markup Language (HTML) is a simple presentation language used to markup the content of Web pages.
hypervisorA hypervisor, sometimes referred to as a virtualization manager, is a program that allows multiple operating systems which can include different operating…
HYWAYSHybrids with Advanced Yields for Surveillance.
i-modeA standard used by Japanese wireless devices to access cHTML (compact HTML) Web sites and display animated GIFs and other multimedia content.
I-MOSCIntegrated Mission Operations Support Center (USAF term).
I.C.E. (Instant Capacity Expansion)A GuardianOS Snap Server feature that allows volumes to be instantly expanded and provisioned non-disruptively without degrading performance or having to…