Hidden keywordsKeywords that are placed in the HTML source in such a way that these words are not viewable by human visitors looking at the rendered web page.
Hidden TextText on a web page which is visible to search engine spiders but not visible to human visitors.
Hidden Text - SEO Spam TacticHidden Text is a SEO spam tactic to hide contextual html text from human visitors to a webpage, however making it available to search engines to spider…
hierarchical computer networkA computer network in which processing and control functions are performed at several levels by computers specially suited for the functions performed…
hierarchical data modelorganization of files based on relationships established along progressive levels of a tree structure, or hierarchy
hierarchical descriptionThe principal of archival description in which documentary material is described in aggregates at various prescribed hierarchical levels.
Hierarchical namespaceAny namespace that is hierarchically structured and provides rules that allow the namespace to be partitioned.
hierarchical namingA system of naming associated with IBM® Lotus® Notes® IDs that reflects the relationship of names to the certifiers in an organization.
hierarchical routingRouting that is based on hierarchical addressing. Note: Most Transmission Control Protocol/Internet Protocol (TCP/IP) routing is based on a two-level…
hierarchical viewA view that distinguishes between main documents and response documents. Each main document has its response documents indented under it.
hierarchically synchronized networkA mutually synchronized network in which some clocks exert more control than others, the network operating frequency being a weighted mean of the natural…
hierarchyA classification of relationships in which each item except the top one (known as the root) is a specialized form of the item above it.
High Assurance Guard (HAG)An enclave boundary protection device that controls access between a local area network that an enterprise system has a requirement to protect, and an…
High AvailabilityA continuously available computer system is characterized as having essentially no downtime in any given year. A system with 99.
high availability (HA)NetApp support for failover; that is, one appliance assuming the identity and duties of a failed appliance.
High Definition Television (HDTV)Television that has approximately twice the horizontal and twice the vertical emitted resolution specified by the NTSC standard.
High Density Aerospace Control Zone (HIDACZ)Airspace designated in an airspace control plan or airspace control order, in which there is a concentrated employment of various weapons and users.
High Earth Orbit (HEO)An orbit about the earth at an altitude greater than 3,000 nautical miles (about 5,600 kilometers).
High EndoatmosphereThat portion of the earths atmosphere, generally above 40 km altitude.
High Endoatmospheric Defense Interceptor (HEDI)OBSOLETE. Interceptor concept designed to engage RVs within the (upper or high endo ) atmosphere. (Predecessor to Endo- Exoatmospheric Interceptor (E2I).
High Frequency (HF)The portion of the radio frequency spectrum between between 3 and 30 MHz
High Impact SystemAn information system in which at least one security objective (i.e., confidentiality, integrity, or availability) is assigned a FIPS 199 potential impact…
high level programming languageLanguages such as Java, C++, Ada, etc. which provide programmers with features such as control structures, methods, classes, packages, etc.
High Order Language (HOL)A programming language that requires little knowledge of the computer on which a program will run, can be translated into several different machine…
high probability of completion (HPC)With reference to American National Standard ANSI T1.631-1993, an aspect of National Security and Emergency Preparedness (NS/EP) telephone calls, as…
High Sierra formatA standard format for placing fields and directories on CD ROM, revised and adopted by the International Organization for Standardization as ISO 9660.
high-frequency distribution frame (HFDF)A distribution frame that provides terminating and interconnecting facilities for those combined supergroup modulator output circuits and combined…
high-level controlIn the hierarchical structure of a primary or secondary data transmission station, the conceptual level of control or processing logic that (a) is above…
high-level language (HLL)A computer programming language that is primarily designed for, and syntactically oriented to, particular classes of problems and that is essentially…
High-level language virtual machinesIn high-level language virtual machines, the virtualization layer sits as an application program on top of an operating system.
high-pass filterA filter that passes frequencies above a given frequency and attenuates all others.
high-performance equipmentEquipment that (a) has the performance characteristics required for use in trunks or links, (b) is designed primarily for use in global and tactical…
high-priority emergency service callA call identified as receiving emergency service treatment, which has been marked as requiring special treatment by the emergency service administration.
high-usage trunk groupA group of trunks for which an alternate route has been provided to absorb the relatively high rate of overflow traffic.
Higher Authority InterfacePolicy, strategy, doctrine, readiness conditions, and rules of engagement from higher authorities for use by the defense system in conducting system…
highwayA digital serial-coded bit stream with time slots allotted to each call on a sequential basis. 2.
HijackingMaking a search engine believe that another website exists at your URL. Typically done using techniques such as a 302 redirect or meta refresh.
Hijacking of WebsitesHijacking of websites is a practice that makes search engines believe that a specific website resides at another URL.
HIPAA Privacy RuleA rule issued by the U.S. Department of Health and Human Services to implement the privacy requirements of the Health Insurance Portability and…
hissNoise in the audio frequency range, having subjective characteristics analogous to prolonged sibilant sounds.
HistoricThe time period after the appearance of written records. In the New World, this generally refers to the time period after the beginning of European…
historical valuedetermination that records possess value in documenting the history of an organization and are thus worthy of permanent preservation See also…
historical viewIn ArcStorm, a snapshot of the state of a given data source at a given time. In an historical view, the database is not modified, and no data is created…
historyA mechanism in ArcStorm to enable the tracking of changes made to a data source.
history listA record of the documents visited during a Web session, which list allows users to access previously visited pages more quickly or to generate a record of…
HoldUsed to indicate that a certain amount of a customer's balance may not be withdrawn until an item has been collected, or until a specific check or debit…