Find keyword or terms by letter
Click on a numbered or lettered box below to show list of keywords and terms.
Hammock
(Context: )
Definition
An aggregate or summary activity (a group of related activities is shown as one and reported at a summary level). A hammock may or may not have an internal sequence.
Harden
(Context: )
Definition
The process of implementing software, hardware, or physical security controls to mitigate risk associated with COV infrastructure and/or sensitive information systems and data.
Heading Elements
(Context: )
Definition
The six heading elements, H1 through H6, denote section headings. Although the order and occurrence of headings is not constrained by the HTML DTD, documents should not skip levels (for example, from H1 to H3), as converting such documents to other representations is often problematic. Example of use:
<H1>This is a heading</H1> Here is some text
<H2>Second level heading</H2> Here is some more text.
Typical renderings are:
1) Bold, very-large font, centered. One or two blank lines above and below.
2) Bold, large font, flush-left. One or two blank lines above and below.
3) Italic, large font, slightly indented from the left margin. One or two blank lines above and below.
4) Bold, normal font, indented more than H3. One blank line above and below.
5) Italic, normal font, indented as H4. One blank line above.
6) Bold, indented same as normal text, more than H5. One blank line above.
For further information see the XHTML Quick Reference Guide.
Health Information Exchange (HIE)
(Context: )
Definition
The electronic movement of health-related information among organizations according to nationally recognized standards.
Health Information Organization (HIO)
(Context: )
Definition
An organization that oversees and governs the exchange of health-related information among organizations according to nationally recognized standards.
Health Insurance Portability and Accountability Act (HIPAA)
(Context: )
Definition
Enacted in 1996 to help protect health insurance coverage for workers and their families when employees change or lose their jobs. Provisions of HIPAA also address the security and privacy of health data.
High Availability
(Context: )
Definition
A requirement that the information system is continuously available, has a low threshold for down time, or both.
High Speed Downlink Packet Access (HSDPA)
(Context: )
Definition
A UMTS packet-based broadband data service feature of the WCDMA standard. HSDPA provides an improved downlink for the UMTS data service. It improves speed and system capacity by making better use of the bandwidth. Data transmission speeds are up to 8-10 Mbps over a 5 MHz bandwidth or more than 20 Mbps for systems that use multiple transmitters and receivers (Multiple Input Multiple Output or MIMO systems (802.11n)). The high speeds of HSDPA are achieved through techniques including 16 Quadrature Amplitude Modulation, variable error coding, and incremental redundancy. HSDPA use requires technology upgrades to sending and receiving devices in UMTS networks. This broadband service is provided by Cingular in limited locations in 2006.
High-Level Section (HLS)
(Context: Enterprise Architecture)
Definition
Architecture Overview Document (AOD) is split into 3 sections to be completed at different times in the lifecycle of service deployment. Each architecture will include a High-Level Section (HLS), Detailed Design Section (DDS), and an As Built Section (ABS). HLS - Is a high-level section that is required to be approved prior to starting the project to build the architecture.
Home Page
(Context: )
Definition
For a Web user, the home page is the first Web page that is displayed after starting a Web browser like Netscape's Navigator or Microsoft's Internet Explorer. The browser is usually preset so that the home page is the first page of the browser manufacturer. However, you can set the home page to open to any Web site. For example, you can specify that "http://www.yahoo.com" be your home page. You can also specify that there be no home page (a blank space will be displayed) in which case you choose the first page from your bookmark list or enter a Web address. For a Web site developer, a home page is the first page presented when a user selects a site or presence on the World Wide Web. The usual address for a Web site is the home page address, although you can enter the address (Uniform Resource Locator) of any page and have that page sent to you.
Host
(Context: )
Definition
The term "host" is used in several contexts, in each of which it has a slightly different meaning:
- In Internet protocol specifications, the term "host" means any computer that has full two-way access to other computers on the Internet. A host has a specific "local or host number" that, together with the network number, forms its unique IP address. If you use Point-to-Point Protocol to get access to your access provider, you have a unique IP address for the duration of any connection you make to the Internet and your computer is a host for that period. In this context, a "host" is a node in a network.
- For companies or individuals with a Web site, a host is a computer with a Web server that serves the pages for one or more Web sites. A host can also be the company that provides that service, which is known as hosting.
- In IBM and perhaps other mainframe computer environments, a host is a mainframe computer (which is now usually referred to as a "large server"). In this context, the mainframe has intelligent or "dumb" terminals (or emulation) attached to it that use it as a host provider of services. (The server/client relationship is a programming model independent of this contextual usage of "host.")
- In other contexts, the term generally means a device or program that provides services to some smaller or less capable device or program.
Hosted Environment
(Context: )
Definition
Is a data center not owned or leased by the Commonwealth of Virginia (COV).
HTTP MPOST and HTTP POST
(Context: )
Definition
A Simple Object Access Protocol (SOAP) request can use HTTP's POST verb. In fact, however, the protocol requires that the first request to a server is made using M-POST. M-POST is a new HTTP verb defined using the HTTP Extension Framework (http://www.w3.org/Protocols/HTTP/ietf-http-ext ). If a request made using M-POST fails, the client can try again using a standard POST request. (In this case, future requests can also use POST because the server obviously doesn't support M-POST.) M-POST allows sending HTTP headers that can't be sent via the standard POST verb, providing more flexibility for SOAP users. Firewalls can even force the use of M- POST if desired, by simply refusing all HTTP POSTs with a content type of "text/xml-SOAP".
Hub
(Context: )
Definition
A LAN wiring concentrator that connects cables from numerous network devices. An intelligent hub can monitor and report on network activity, typically using SNMP.
Hybrid cloud
(Context: )
Definition
The cloud infrastructure is a composition of two or more distinct cloud infrastructures (private, community, or public) that remain unique entities, but are bound together by standardized or proprietary technology that enables data and application portability (e.g., cloud bursting for load balancing between clouds). The COV hybrid cloud will consist of at least one private cloud, more than one public (utility) cloud, more than one community (gov/FedRAMP) cloud, and integration between these cloud hosting services.
Hypertext
(Context: )
Definition
Hypertext is text that contains links to other text.
HyperText Markup Language (HTML)
(Context: General, Software)
Definition
The standard markup language for documents designed to be displayed in a web browser.
A subset of SGML - a W3C standard for formatting Web pages.
HyperText Transfer Protocol (HTTP)
(Context: General, Software)
Definition
An application layer protocol in the Internet protocol suite model for distributed, collaborative, hypermedia information systems. It is the foundation of data communication for the World Wide Web for the exchange of HTML documents. It conventionally uses port 80.
Hypertext Transfer Protocol Secure (HTTPS)
(Context: General)
Definition
An extension of HTTP which uses encryption for secure communication over a computer network.
Hypervisor
(Context: )
Definition
A controlling operating system or virtualization manager for multiple virtual servers. The hypervisor enables the division of resources for particular processor architecture. Each server partition may be running identical or different operating systems.