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Layer 8
Layer 8 is a term used to refer to ''user'' or ''political'' layer on top of the 7-layer OSI model of computer networking. The OSI model is a 7-layer abstract model that describes an architecture of data communications for networked computers. The layers build upon each other, allowing for the abstraction of specific functions in each one. The top (7th) layer is the Application Layer describing methods and protocols of software applications. It is then held that the user is the 8th layer. Layers, defined According to Bruce Schneier and RSA: * Layer 8: The individual person. * Layer 9: The organization. * Layer 10: Government or legal compliance Network World readers humorously report: * Layer 8: Money - Provides network corruption by inspiring increased interference from the upper layer. * Layer 9: Politics - Consists of technically ignorant management that negatively impacts network performance and development. and: * Layer 9: Politics. "Where the most difficult problems ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Evi Nemeth
Evi Nemeth (born June 7, 1940 – missing-at-sea June or July, 2013) was an engineer, author, and teacher known for her expertise in computer system administration and networks. She was the lead author of the "bibles" of system administration: ''UNIX System Administration Handbook'' (1989, 1995, 2000), ''Linux Administration Handbook'' (2002, 2006), and ''UNIX and Linux System Administration Handbook'' (2010, 2017). Evi Nemeth was known in technology circles as the matriarch of system administration. Nemeth was best known in mathematical circles for originally identifying inadequacies in the " Diffie–Hellman problem", the basis for a large portion of modern network cryptography. Career Nemeth received her bachelor's degree in mathematics from Penn State in 1961 and her PhD in mathematics from the University of Waterloo, Ontario in 1971. She taught at Florida Atlantic University and the State University of New York at Utica (SUNY Tech) before joining the computer science de ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
OSI Model
The Open Systems Interconnection model (OSI model) is a conceptual model that 'provides a common basis for the coordination of SOstandards development for the purpose of systems interconnection'. In the OSI reference model, the communications between a computing system are split into seven different abstraction layers: Physical, Data Link, Network, Transport, Session, Presentation, and Application. The model partitions the flow of data in a communication system into seven abstraction layers to describe networked communication from the physical implementation of transmitting bits across a communications medium to the highest-level representation of data of a distributed application. Each intermediate layer serves a class of functionality to the layer above it and is served by the layer below it. Classes of functionality are realized in all software development through all and any standardized communication protocols. Each layer in the OSI model has its own well-defined funct ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Internet Systems Consortium
Internet Systems Consortium, Inc., also known as ISC, is a Delaware-registered, 501(c)(3) non-profit corporation that supports the infrastructure of the universal, self-organizing Internet by developing and maintaining core production-quality software, protocols, and operations. ISC has developed several key Internet technologies that enable the global Internet, including: BIND, ISC DHCP and Kea. Other software projects no longer in active development include OpenReg and ISC AFTR (an implementation of an IPv4/IPv6 transition protocol based on Dual-Stack Lite). ISC operates one of the 13 global authoritative DNS root servers, F-Root. Over the years a number of additional software systems were operated under ISC (for example: INN and Lynx) to better support the Internet's infrastructure. ISC also expanded their operational activities to include Internet hosting facilities for other open-source projects such as NetBSD, XFree86, kernel.org, secondary name-service (S ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Real Life
Real life is a phrase used originally in literature to distinguish between the real world and fictional, virtual or idealized worlds, and in acting to distinguish between actors and the characters they portray. It has become a popular term on the Internet to describe events, people, activities, and interactions occurring offline; or otherwise not primarily through the medium of the Internet. It is also used as a metaphor to distinguish life in a vocational setting as opposed to an academic one, or adulthood and the adult world as opposed to childhood or adolescence. As distinct from fiction When used to distinguish from fictional worlds or universes against the consensus reality of the reader, the term has a long history: In her 1788 work, '' Original Stories from Real Life; with Conversations Calculated to Regulate the Affections, and Form the Mind to Truth and Goodness'', author Mary Wollstonecraft employs the term in her title, representing the work's focus on a middle-cla ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Prnewswire
PR Newswire is a distributor of press releases headquartered in Chicago. The service was created in 1954 to allow companies to electronically send press releases to news organizations, using teleprinters at first. The founder, Herbert Muschel, operated the service from his house in Manhattan for approximately 15 years. The business was eventually sold to Western Union and then United Newspapers of London. In December 2015, Cision Inc. announced it would acquire the company. On January 1, 2021, Cision formally merged PR Newswire into the company, ending its status as a legal entity after 66 years. Cision plans to continue utilizing the brand name for the foreseeable future in the United States, as well as in Europe and the Asia-Pacific regions. History PR Newswire was founded in March 1954 by Herbert Muschel, who ran the business from his town house in New York City for the first 15 years of its operation. The company used telecommunications lines and teleprinters owned by West ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
User-in-the-loop
User-in-the-Loop (UIL) refers to the notion that a technology (e.g., network) can improve a performance objective by engaging its human users (Layer 8). The idea can be applied in various technological fields. UIL assumes that human users of a network are among the smartest but also most unpredictable units of that network. Furthermore, human users often have a certain set of (input) values that they sense (more or less observe, but also acoustic or haptic feedback is imaginable: imagine a gas pedal in a car giving some resistance, like for a speedomat). Both elements of smart decision-making and observed values can help towards improving the bigger objective. The input values are meant to encourage/discourage human users to behave in certain ways that improve the overall performance of the system. One example of a historic implementation related to UIL has appeared in electric power networks where a price chart is introduced to users of electrical power. This price chart differen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Service-oriented Architecture
In software engineering, service-oriented architecture (SOA) is an architectural style that focuses on discrete services instead of a monolithic design. By consequence, it is also applied in the field of software design where services are provided to the other components by application components, through a communication protocol over a network. A service is a discrete unit of functionality that can be accessed remotely and acted upon and updated independently, such as retrieving a credit card statement online. SOA is also intended to be independent of vendors, products and technologies. Service orientation is a way of thinking in terms of services and service-based development and the outcomes of services. A service has four properties according to one of many definitions of SOA: # It logically represents a repeatable business activity with a specified outcome. # It is self-contained. # It is a black box for its consumers, meaning the consumer does not have to be aware of the s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Linux Gazette
''The Linux Gazette'' was a monthly self-published Linux computing webzine, published between July 1995 and June 2011. Its content was published under the Open Publication License. History It was started in July 1995 by John M. Fisk as a free service. He went on to pursue his studies and become a medical doctor. At Mr. Fisk's request, the publication was sponsored and managed by SSC (Specialized System Consultants, who at that time were also publishers of Linux Journal). The content was always provided by volunteers, including most of the editorial oversight. After those years, the volunteer staff and the management of SSC had a schism (see Bifurcation below). Both the volunteer-run magazine and the magazine run by SSC has been closed down. One way Linux Gazette differed from other, similar, webzines (and magazines) was ''The Answer Gang''. In addition to providing a regular page devoted to questions and answers, questions to The Answer Gang were answered on a mailing list, an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
April Fools' Day RFC
April is the fourth month of the year in the Gregorian and Julian calendars. It is the first of four months to have a length of 30 days, and the second of five months to have a length of less than 31 days. April is commonly associated with the season of autumn in parts of the Southern Hemisphere, and spring in parts of the Northern Hemisphere, where it is the seasonal equivalent to October in the Southern Hemisphere and vice versa. History The Romans gave this month the Latin name '' Aprilis''"April" in '' Chambers's Encyclopædia''. London: George Newnes, 1961, Vol. 1, p. 497. but the derivation of this name is uncertain. The traditional etymology is from the verb ''aperire'', "to open", in allusion to its being the season when trees and flowers begin to "open", which is supported by comparison with the modern Greek use of άνοιξη (''ánixi'') (opening) for spring. Since some of the Roman months were named in honor of divinities, and as April was s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Internet
The Internet (or internet) is the global system of interconnected computer networks that uses the Internet protocol suite (TCP/IP) to communicate between networks and devices. It is a '' network of networks'' that consists of private, public, academic, business, and government networks of local to global scope, linked by a broad array of electronic, wireless, and optical networking technologies. The Internet carries a vast range of information resources and services, such as the inter-linked hypertext documents and applications of the World Wide Web (WWW), electronic mail, telephony, and file sharing. The origins of the Internet date back to the development of packet switching and research commissioned by the United States Department of Defense in the 1960s to enable time-sharing of computers. The primary precursor network, the ARPANET, initially served as a backbone for interconnection of regional academic and military networks in the 1970s to enable resource shari ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
TCP/IP Model
The Internet protocol suite, commonly known as TCP/IP, is a framework for organizing the set of communication protocols used in the Internet and similar computer networks according to functional criteria. The foundational protocols in the suite are the Transmission Control Protocol (TCP), the User Datagram Protocol (UDP), and the Internet Protocol (IP). In the development of this networking model, early versions of it were known as the Department of Defense (DoD) model because the research and development were funded by the United States Department of Defense through DARPA. The Internet protocol suite provides end-to-end data communication specifying how data should be packetized, addressed, transmitted, routed, and received. This functionality is organized into four abstraction layers, which classify all related protocols according to each protocol's scope of networking. An implementation of the layers for a particular application forms a protocol stack. From lowest to high ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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