A local area network ( LAN ) is a computer network that interconnects computers within a limited area such as a residence, school, laboratory, university campus or office building. By contrast, a wide area network (WAN) not only covers a larger geographic distance, but also generally involves leased telecommunication circuits .
26-600: [REDACTED] Look up LAN or lan in Wiktionary, the free dictionary. Lan or LAN may also refer to: Science and technology [ edit ] Local asymptotic normality , a fundamental property of regular models in statistics Longitude of the ascending node , one of the orbital elements used to specify the orbit of an object in space Łan , unit of measurement in Poland Local area network ,
52-445: A hotspot service. Network topology describes the layout of interconnections between devices and network segments. At the data link layer and physical layer , a wide variety of LAN topologies have been used, including ring , bus , mesh and star . Simple LANs generally consist of cabling and one or more switches . A switch can be connected to a router , cable modem , or ADSL modem for Internet access. A LAN can include
78-476: A wide area network (WAN). List of storms named Lan The name Lan has been used for two tropical cyclones in the northwestern Pacific Ocean. The United States contributed the name, a Marshallese word for storm. It replaced " Vicente ". Typhoon Lan (2017) (T1721, 25W, Paolo) – an intense typhoon that struck Japan , causing $ 2 billion in damage and killing 17 people Typhoon Lan (2023) (T2307, 07W) –
104-482: A 2009 Chinese film Lan Mandragoran , a fictional character from Robert Jordan's The Wheel of Time series Lan Hikari , protagonist of the Mega Man: Battle Network series of video games and animated television shows People [ edit ] Lan (surname 蓝) , a Chinese surname Lan (surname 兰) , a Chinese surname Lan (given name) , a given name (including a list of people with
130-605: A computer network that interconnects within a limited area such as one or more buildings Lan blood group system , a human blood group Lanthanum nitride , a chemical compound whose formula is LaN Places [ edit ] Lancashire (Chapman code), England Lancaster railway station (National Rail station code), England Capital Region International Airport (IATA airport code), Lansing, Michigan, US Lan County , Shanxi, China Łan, Lublin Voivodeship , Poland Lan (river) , Belarus Llan (placename) ,
156-573: A good indication of the situation. A number of experimental and early commercial LAN technologies were developed in the 1970s. Ethernet was developed at Xerox PARC between 1973 and 1974. Cambridge Ring was developed at Cambridge University starting in 1974. ARCNET was developed by Datapoint Corporation in 1976 and announced in 1977. It had the first commercial installation in December 1977 at Chase Manhattan Bank in New York. In 1979,
182-750: A placename element known in Breton as lan Airlines [ edit ] LAN Airlines , former name of LATAM Chile, an airline in Chile, with a stake in other airlines: LAN Peru , an airline based in Peru LAN Ecuador , an airline based in Quito, Ecuador LAN Argentina , a defunct Argentine airline LAN Dominicana , a defunct Dominican airline LAN Colombia , an airline based in Bogotá, Colombia Arts [ edit ] Lan (film) ,
208-485: A plethora of methods of sharing resources. Typically, each vendor would have its own type of network card, cabling, protocol, and network operating system . A solution appeared with the advent of Novell NetWare which provided even-handed support for dozens of competing card and cable types, and a much more sophisticated operating system than most of its competitors. Of the competitors to NetWare, only Banyan Vines had comparable technical strengths, but Banyan never gained
234-417: A potent typhoon that struck Japan See also [ edit ] Cyclone Lam (2015) – a powerful cyclone with a similar name that struck Australia 's Northern Territory Preceded by Khanun Pacific typhoon season names Lan Succeeded by Saola [REDACTED] List of storms with the same or similar names This article includes a list of named storms that share
260-459: A secure base. 3Com produced 3+Share and Microsoft produced MS-Net . These then formed the basis for collaboration between Microsoft and 3Com to create a simple network operating system LAN Manager and its cousin, IBM's LAN Server . None of these enjoyed any lasting success; Netware dominated the personal computer LAN business from early after its introduction in 1983 until the mid-1990s when Microsoft introduced Windows NT . In 1983, TCP/IP
286-475: A tribe of Eastern Huns Lan , a Cantonese profanity Lockwood, Andrews & Newnam , an American civil engineering company List of storms named Lan See also [ edit ] Lymphadenopathy LAN party , a social happening on a local area network e.g multiplayer games. Lans (disambiguation) Ian Llan (disambiguation) Topics referred to by the same term [REDACTED] This disambiguation page lists articles associated with
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#1732772418828312-495: A wide variety of other network devices such as firewalls , load balancers , and network intrusion detection . Advanced LANs are characterized by their use of redundant links with switches using the spanning tree protocol to prevent loops, their ability to manage differing traffic types via quality of service (QoS), and their ability to segregate traffic with VLANs . At the higher network layers, protocols such as NetBIOS , IPX/SPX , AppleTalk and others were once common, but
338-540: Is still the basis of most commercial LANs today. While optical fiber cable is common for links between network switches , use of fiber to the desktop is rare. In a wireless LAN , users have unrestricted movement within the coverage area. Wireless networks have become popular in residences and small businesses, because of their ease of installation. Most wireless LANs use Wi-Fi as wireless adapters are typically integrated into smartphones , tablet computers and laptops . Guests are often offered Internet access via
364-722: The Electronic voting systems for the European Parliament was the first installation of a LAN connecting hundreds (420) of microprocessor-controlled voting terminals to a polling/selecting central unit with a multidrop bus with Master/slave (technology) arbitration. The development and proliferation of personal computers using the CP/M operating system in the late 1970s, and later DOS -based systems starting in 1981, meant that many sites grew to dozens or even hundreds of computers. The initial driving force for networking
390-459: The Internet protocol suite (TCP/IP) has prevailed as the standard of choice. LANs can maintain connections with other LANs via leased lines, leased services, or across the Internet using virtual private network technologies. Depending on how the connections are established and secured, and the distance involved, such linked LANs may also be classified as a metropolitan area network (MAN) or
416-703: The United States. However, WWMCCS was superseded by the Global Command and Control System (GCCS) before that could happen. During the same period, Unix workstations were using TCP/IP networking. Although the workstation market segment is now much reduced, the technologies developed in the area continue to be influential on the Internet and in all forms of networking—and the TCP/IP protocol has replaced IPX , AppleTalk , NBF , and other protocols used by
442-672: The benches of the European Parliament Hemicycles in Strasbourg and Luxembourg. Early Ethernet ( 10BASE-5 and 10BASE-2 ) used coaxial cable . Shielded twisted pair was used in IBM's Token Ring LAN implementation. In 1984, StarLAN showed the potential of simple unshielded twisted pair by using category 3 cable —the same cable used for telephone systems. This led to the development of 10BASE-T (and its twisted-pair successors ) and structured cabling which
468-628: The early PC LANs. Econet was Acorn Computers's low-cost local area network system, intended for use by schools and small businesses. It was first developed for the Acorn Atom and Acorn System 2 / 3 / 4 computers in 1981. In the 1980s, several token ring network implementations for LANs were developed. IBM released their own implementation of token ring in 1985, It ran at 4 Mbit/s . IBM claimed that their token ring systems were superior to Ethernet, especially under load, but these claims were debated. IBM's implementation of token ring
494-670: The name) Lan (tribe) , ethnic group in Han dynasty China David Lan (born 1952), South African-born British playwright Donald Lan (1930–2019), American politician Phạm Chi Lan , Vietnamese economist Characters [ edit ] Lan, Aeon of The Hunt in Honkai: Star Rail Other uses [ edit ] Län , administrative division used in Sweden and until 2009 in Finland Lan (tribe) ,
520-454: The same name (or similar names). If an internal link incorrectly led you here, you may wish to change the link to point directly to the intended storm article. Retrieved from " https://en.wikipedia.org/w/index.php?title=List_of_storms_named_Lan&oldid=1229301033 " Categories : Set index articles on storms Pacific typhoon set index articles Hidden categories: Articles with short description Short description
546-509: The title Lan . If an internal link led you here, you may wish to change the link to point directly to the intended article. Retrieved from " https://en.wikipedia.org/w/index.php?title=Lan&oldid=1224525540 " Categories : Disambiguation pages Disambiguation pages with surname-holder lists Hidden categories: Short description is different from Wikidata All article disambiguation pages All disambiguation pages LAN Ethernet and Wi-Fi are
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#1732772418828572-518: The two most common technologies in use for local area networks. Historical network technologies include ARCNET , Token Ring and AppleTalk . The increasing demand and usage of computers in universities and research labs in the late 1960s generated the need to provide high-speed interconnections between computer systems. A 1970 report from the Lawrence Radiation Laboratory detailing the growth of their "Octopus" network gave
598-522: Was a relatively high-speed choice of that era, with speeds such as 100 Mbit/s. By 1994, vendors included Cisco Systems , National Semiconductor , Network Peripherals, SysKonnect (acquired by Marvell Technology Group ), and 3Com . FDDI installations have largely been replaced by Ethernet deployments. In 1979, the Electronic voting systems for the European Parliament was using 10 kilometers of simple unshielded twisted pair category 3 cable —the same cable used for telephone systems—installed inside
624-442: Was first shown capable of supporting actual defense department applications on a Defense Communication Agency LAN testbed located at Reston, Virginia. The TCP/IP-based LAN successfully supported Telnet , FTP , and a Defense Department teleconferencing application. This demonstrated the feasibility of employing TCP/IP LANs to interconnect Worldwide Military Command and Control System (WWMCCS) computers at command centers throughout
650-624: Was the basis of the IEEE 802.5 standard. A 16 Mbit/s version of Token Ring was standardized by the 802.5 working group in 1989. IBM had market dominance over Token Ring, for example, in 1990, IBM equipment was the most widely used for Token Ring networks. Fiber Distributed Data Interface (FDDI), a LAN standard, was considered an attractive campus backbone network technology in the early to mid 1990s since existing Ethernet networks only offered 10 Mbit/s data rates and Token Ring networks only offered 4 Mbit/s or 16 Mbit/s rates. Thus it
676-450: Was to share storage and printers , both of which were expensive at the time. There was much enthusiasm for the concept, and for several years, from about 1983 onward, computer industry pundits habitually declared the coming year to be, "The year of the LAN". In practice, the concept was marred by the proliferation of incompatible physical layer and network protocol implementations, and
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