Wan



Overview

Inanareabeyondthedistanceofthehubconnection,itmustbeconnectedthrougharouter.Thistypeofnetworkiscalledawideareanetwork.IftherearebranchesinNorth,CentralandSouth,orevenoverseasbranches,thesebranchesareconnectedbydedicatedlines,whichiscalleda"wideareanetwork."

ThetransmissionmediumoftheWANismainlytheuseoftelephonelinesoropticalfibers.TheISPoperatorsconnecttheenterprises.TheselinesarethelinesthattheISPoperatorshaveburiedundertheroadinadvance.Becausetheprojectishuge,themaintenanceisnoteasy,andBandwidthcanbeguaranteed,soitwillbemoreexpensiveintermsofcost.

TheInternetgenerallyreferstoapublicwideareanetwork.Thecostofapublicwideareanetworkwillbelower,whichisacheaperonlineenvironment,butcomparedwithawideareanetwork,thereisnoway.Tomanagebandwidthandusepubliconlinesystems,thebandwidthofanysegmentcannotbeguaranteed.

LocalAreaNetwork

LocalAreaNetwork(LocalAreaNetwork(LAN))isaconnectiontohouses,schools,laboratories,universitiesAcomputernetworkofcomputersinalimitedareasuchasacampusorofficebuilding.Incontrast,wideareanetworks(WAN)notonlycoverlargegeographicdistances,butalsousuallyinvolvefixeddedicatedlinesandlinkstotheInternet.Incontrast,theInternetismoreexpansive,anditisasystemthatconnectsglobalbusinessesandpersonalcomputers.

Afterusingchainedlocalareanetwork,tokenring,andAppleTalktechnology,EthernetandWi-Fi(wirelessnetworkconnection)arethetwomostcommonlyusedtechnologiesinlocalareanetworkstoday.

See

  • LocalAreaNetwork

  • CircuitSwitching

  • Packetswitching

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