DIDO Wiki dido:public:ra:xapend:xapend.a_glossary:h

Hacker

Anonymous (anonymous@undisclosed.example.com) — 2022-04-09T16:03:17-0400

Hacker Return to Glossary A Hacker in general terms is not necessarily derogatory when it refers to an individual who uses computer, networking or other skills to overcome a technical problems. A Hacker is also a way to refer to anyone who uses their “hacking”

Halving

Anonymous (anonymous@undisclosed.example.com) — 2021-10-04T00:00:08-0400

Halving Return to Glossary Halving bitcoins have a finite supply, which makes them a scarce digital commodity. The total amount of bitcoins that will ever be issued is 21 million. The number of bitcoins generated per block is decreased 50% every four years. This is called “halving.” The final halving will take place in the year 2140.

Hard Fork

Anonymous (anonymous@undisclosed.example.com) — 2021-10-04T13:40:11-0400

Hard Fork Return to Glossary A hard fork (or sometimes hardfork), as it relates to blockchain technology, is a radical change to the protocol that makes previously invalid blocks/transactions valid (or vice-versa). This requires all nodes or users to upgrade to the latest version of the protocol software.

Hardware (H/W)

Anonymous (anonymous@undisclosed.example.com) — 2022-02-03T06:24:11-0400

Hardware (H/W) Return to Glossary Hardware (H/W) refers to the physical elements that make up a computer or electronic system and everything else involved that is physically tangible. This includes the monitor, Hard Disk Drive (HDD), Random Access Memory (RAM) and the Central Processing Unit (CPU). Hardware works hand-in-hand with Firmware and

Hardware Firewall

Anonymous (anonymous@undisclosed.example.com) — 2021-10-04T13:40:11-0400

Hardware Firewall Return to Glossary A Hardware Firewall is a physical device similar to a server that filters traffic to a computer. Instead of plugging the network cable into the server, it is connected to the firewall, positioning the firewall between the uplink and the computer. Like a standard computer with a

Hash Function

Anonymous (anonymous@undisclosed.example.com) — 2022-01-18T12:00:45-0400

Hash Function Return to Glossary A Hash Function, also known as a Hashing Algorithm or Message Digest Function, takes a group of characters (called a key) and maps it to a value of a certain length (called a hash value or hash). The hash value is representative of the original string of characters, but is normally smaller than the original.

Hash Key

Anonymous (anonymous@undisclosed.example.com) — 2022-01-22T06:03:46-0400

Hash Key Return to Glossary A Hash_key is a small value that is used to represent a large piece of data in a hash system. A hash function is a mathematical equation that simplifies large amounts of data into small values. This process saves space in a database and makes retrieving information faster and easier for the programs. It is also common to use hash systems to locate repeating information in complex systems, like a repeated voice or image pattern or even repeated portions of a genome…

Hashcash

Anonymous (anonymous@undisclosed.example.com) — 2021-10-04T13:40:11-0400

Hashcash Return to Glossary Hashcash is a proof-of-work system used to limit email spam and Denial-of-Service (DoS) attacks, and more recently has become known for its use in bitcoin (and other cryptocurrencies) as part of the mining algorithm. Source:

Hashgraph

Anonymous (anonymous@undisclosed.example.com) — 2022-01-10T21:48:43-0400

Hashgraph Return to Glossary Hashgraph is a Distributed Ledger Technology (DLT) that has been described as an alternative to Blockchains. The Hashgraph technology is currently patented, and the only authorized ledger is Hedera Hashgraph. The native cryptocurrency of the Hedera Hashgraph system is HBAR. Unlike blockchains, Hashgraphs do not use

Hashgraph Consensus Algorithm

Anonymous (anonymous@undisclosed.example.com) — 2022-01-11T00:52:52-0400

Hashgraph Consensus Algorithm Return to Glossary The Hashgraph Consensus Algorithm provides near-perfect efficiency in bandwidth usage and consequently can process hundreds of thousands of transactions per second (tps) in a single Shard. Unlike a traditional Proof of Work (PoW) Blockchain, which selects a single

Hashing

Anonymous (anonymous@undisclosed.example.com) — 2022-01-18T12:29:33-0400

Hashing Return to Glossary Hashing is the process of transforming any given key or a string of characters into another value. This is usually represented by a shorter, fixed-length value or key that represents and makes it easier to find or employ the original string.

Hashrate

Anonymous (anonymous@undisclosed.example.com) — 2021-10-03T17:55:02-0400

Hashrate Return to Glossary Hashrate is the number of hashes that can be performed by a bitcoin miner in a given period of time (usually a second). Source:

Hard Disk Drive (HDD)

Anonymous (anonymous@undisclosed.example.com) — 2021-10-08T17:36:44-0400

Hard Disk Drive (HDD) Return to Glossary A Hard Disk Drive (HDD) is a non-volatile memory hardware device that controls the positioning, reading and writing of the hard disk, which furnishes data storage. Hard disk drives are commonly used as the main storage device in a computer. HDDs often store operating system, software programs and other files, and can be found in desktop computers, mobile devices, consumer electronics and enterprise storage arrays in data centers.

Heap Memory

Anonymous (anonymous@undisclosed.example.com) — 2021-10-25T17:50:07-0400

Heap Memory Return to Glossary A Heap Memory, or heap, is an area of pre-reserved computer main storage (memory) that a program process can use to store data in some variable amount that won't be known until the program is running. For example, a program may a accept different amounts of input from one or more users for processing and then do the processing on all the input data at once. Having a certain amount of Heap storage already obtained from the operating system makes it easier for th…

Heap Error

Anonymous (anonymous@undisclosed.example.com) — 2022-01-22T11:41:39-0400

Heap Error Return to Glossary A Heap Error is when code inadvertently overwrites control information that the memory management functions use to control heap usage. The application that you are debugging must have been built with the heap check capability. Each block of allocated

Hedera

Anonymous (anonymous@undisclosed.example.com) — 2022-01-10T21:34:49-0400

Hedera Return to Glossary Hedera is a public, Distributed Ledger Technology (DLT) and governing body built from the ground-up to support new and existing applications running at web scale. Developers use DLTs to build computational trust directly into their applications. This allows individuals and businesses who might not know or trust each other to quickly and inexpensively collaborate. Public DLTs allow for creating and exchanging value, proving identity, verifying and authenticating impo…

Health Insurance Portability and Accountability Act (HIPAA)

Anonymous (anonymous@undisclosed.example.com) — 2021-10-03T17:55:01-0400

Health Insurance Portability and Accountability Act (HIPAA) Return to Glossary Health Insurance Portability and Accountability Act (HIPAA) a US law designed to provide privacy standards to protect patients' medical records and other health information provided to health plans, doctors, hospitals and other health care providers. Developed by the Department of Health and Human Services, these new standards provide patients with access to their medical records and more control over how their pe…

History QoS

Anonymous (anonymous@undisclosed.example.com) — 2021-10-04T11:58:26-0400

History QoS Return to Glossary History QoS Is a QoS policy that specifies the number of samples kept by the middleware engine. Data Distribution Service (DDS) will only attempt to keep the most recent ‘depth’ of samples (KEEP_LAST) or ALL samples (KEEP_ALL) of each instance of data identified by its key. Source: OpenSplice Glossary

Human-machine interface (HMI)

Anonymous (anonymous@undisclosed.example.com) — 2021-10-04T13:40:11-0400

Human-machine interface (HMI) Return to Glossary Human-machine interface (HMI) is a component of certain devices that are capable of handling human-machine interactions. The interface consists of hardware and software that allow user inputs to be translated as signals for machines that, in turn, provide the required result to the user. Human-machine interface technology has been used in different industries like electronics, entertainment, military, medical, etc. Human-machine interfaces hel…

Homomorphic Encryption (HE)

Anonymous (anonymous@undisclosed.example.com) — 2022-01-21T11:11:38-0400

Homomorphic Encryption (HE) Return to Glossary Homomorphic Encryption (HE) is a method of encryption that allows any data to remain encrypted while it’s being processed and manipulated. It enables you or a third party (such as a cloud provider) to apply functions on encrypted data without needing to reveal the values of the data. A homomorphic cryptosystem is like other forms of public encryption in that it uses a public key to encrypt data and allows only the individual with the matching p…

Horizontal Scaling

Anonymous (anonymous@undisclosed.example.com) — 2021-10-04T13:40:11-0400

Horizontal Scaling Return to Glossary Horizontal Scaling refers to provisioning additional servers to meet your needs, often splitting workloads between servers to limit the number of requests any individual server is getting. In a cloud-based environment, this would mean adding additional

Howey Test

Anonymous (anonymous@undisclosed.example.com) — 2022-04-01T18:18:54-0400

Howey Test Return to Glossary The Howey Test refers to the U.S. Supreme Court case for determining whether a transaction qualifies as an “investment contract,” and therefore would be considered a security and subject to disclosure and registration requirements under the Securities Act of 1933 and the Securities Exchange Act of 1934. Under the Howey Test, an investment contract exists if there is an

Hard Real-Time System

Anonymous (anonymous@undisclosed.example.com) — 2022-01-15T08:56:35-0400

Hard Real-Time System Return to Glossary A Hard Real-Time System (also known as an Immediate Real-Time System) is hardware or software that must operate within the confines of a stringent deadline. The application may be considered to have failed if it does not complete its function within the allotted time span. Examples of hard real-time systems include components of pacemakers, anti-lock brakes and aircraft control systems.

Hypertext markup language (HTML)

Anonymous (anonymous@undisclosed.example.com) — 2021-10-30T14:40:31-0400

Hypertext markup language (HTML) Return to Glossary Hypertext markup language (HTML) is the major markup language used to display Web pages on the Internet. In other words, Web pages are composed of HTML, which is used to display text, images or other resources through a Web browser.

Hypertext Transfer Protocol (HTTP)

Anonymous (anonymous@undisclosed.example.com) — 2021-10-03T16:30:48-0400

Hypertext Transfer Protocol (HTTP) Return to Glossary Hypertext Transfer Protocol (HTTP) is a fundamental Protocol used on the Internet in order to control data transfer to and from a hosting Server, in communication with a web browser Client. HTTP is the essential means of communication between web users and the servers or services that maintain the websites themselves.

Hypertext transfer protocol (HTTP) Request

Anonymous (anonymous@undisclosed.example.com) — 2021-10-03T16:30:51-0400

Hypertext transfer protocol (HTTP) Request Return to Glossary Hypertext transfer protocol (HTTP) Request is the message that is sent by a client to a server or service over Hypertext Transfer Protocol (HTTP). When these requests are being sent, clients can use various methods. Source: An HTTP Request has five major parts −

Hypertext transfer protocol (HTTP) Response

Anonymous (anonymous@undisclosed.example.com) — 2021-10-03T16:30:54-0400

Hypertext transfer protocol (HTTP) Response Return to Glossary HTTP Response occurs on Hypertext Transfer Protocol (HTTP) after receiving and interpreting a Hypertext transfer protocol (HTTP) Request message, a Server or Service responds with a response. Source: An HTTP Response has four major parts − Status/Response Code − Indicates the Server status for the requested resource. For example, 404 means resource not found and 200 mean…

HTTP Sniffer

Anonymous (anonymous@undisclosed.example.com) — 2022-05-11T14:19:19-0400

HTTP Sniffer Return to Glossary HTTP Sniffer is an application that monitors traffic data to and from a computer network link. It can be an independent software application or hardware device equipped with the relevant firmware and software. Sniffers exist in a variety of platforms including both commercial and open-source versions. Some sniffers can only intercept data from TCP/IP protocols but the more complex ones even capture and decode data packets for the more secure SSL /HTTPS protoc…

Hypertext Transport Protocol Secure (HTTPS)

Anonymous (anonymous@undisclosed.example.com) — 2021-10-03T17:55:02-0400

Hypertext Transport Protocol Secure (HTTPS) Return to Glossary Hypertext Transfer Protocol Secure (HTTPS) is a variant of the standard web Hypertext Transfer Protocol (HTTP) that adds a layer of security on the data in transit through a Secure Sockets Layer (SSL) or Transport layer security (TLS) Protocol connection. HTTPS enables encrypted communication and secure connection between a remote user (i.e.,

Hub

Anonymous (anonymous@undisclosed.example.com) — 2021-10-04T13:40:11-0400

Hub Return to Glossary A Hub connects multiple computer networking devices together. A hub also acts as a repeater in that it amplifies signals that deteriorate after traveling long distances over connecting cables. A hub is the simplest in the family of network connecting devices because it connects

Human Trafficking

Anonymous (anonymous@undisclosed.example.com) — 2022-04-01T18:52:55-0400

Human Trafficking Return to Glossary Human Trafficking involves the use of force, fraud, or coercion to obtain some type of labor or commercial sex act. Every year, millions of men, women, and children are trafficked worldwide – including right here in the United States. It can happen in any community and victims can be any age, race, gender, or nationality. Traffickers might use violence, manipulation, or false promises of well-paying jobs or romantic relationships to lure victims into traf…

Hybrid Network

Anonymous (anonymous@undisclosed.example.com) — 2021-10-04T13:40:11-0400

Hybrid Network Return to Glossary Hybrid Network is unique in that it is decentralized while also making it possible to restrict the visibility of information on the network with a combination of Public, Private, Permissionless and Permissioned Networks. Thus, a hybrid blockchain is appealing for regulated markets as it offers the benefits of public blockchain and private blockchain together.

Hype-Cycle

Anonymous (anonymous@undisclosed.example.com) — 2021-10-03T23:35:06-0400

Hype-Cycle Return to Glossary The hype-cycle is a graphical representation of the life cycle stages a technology goes through from conception to maturity and widespread adoption. Source: Gartner hype cycle

Hyperledger

Anonymous (anonymous@undisclosed.example.com) — 2022-01-10T16:21:50-0400

Hyperledger Return to Glossary Hyperledger is an Open Source Software (OSS) collaborative effort created to advance cross-industry Blockchain technologies. It is a global collaboration, hosted by The Linux Foundation, including leaders in finance, banking, Internet of Things (IOT), Supply Chain, manufacturing and Technology. Source:

Hypervisor

Anonymous (anonymous@undisclosed.example.com) — 2021-10-03T17:55:02-0400

Hypervisor Return to Glossary A Hypervisor, also known as a Virtual Machine Monitor (VMM), is software that creates and runs virtual machines (VMs). A hypervisor allows one host computer to support multiple guest VMs by virtually sharing its resources, such as memory and processing. Source:

Glossary H Terms

Anonymous (anonymous@undisclosed.example.com) — 2021-10-04T13:40:11-0400

Glossary H Terms Return to Glossary Note: You can add new terms beginning with 'H' here List of Words Return to Top * Hacker * Halving * Hard Disk Drive (HDD) * Hard Fork * Hard Real-Time System * Hardware (H/W) * Hardware Firewall * Hash Function * Hash Key * Hashcash * Hashgraph * Hashgraph Consensus Algorithm * Hashing * Hashrate * Health Insurance Portability and Accountability Act (HIPAA) * Heap Error * Heap Memory * Hedera * History QoS * Homomorphic Encryption (…