环境监察执法资格证考试试题文档格式.docx
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环境监察执法资格证考试试题文档格式.docx
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Fiberoptictransceiverisaphysicallayerequipment,istoconvertopticalfibertotwistedpairequipment,thereisa10/100/1000Mconversion.
Therearemanykindsofprotocolconverter,themajorityisbasicallyisa2layerdevice,aRADprotocolconverterisoftenmetwiththeE1line2MintoV.35datalineconnectedtotherouterequipment,ofcourse,2MtwistedpairEthernet,remoteaccessvia2McommunicationlinescanrealizeLANandexpand.
Thetwokindsofequipmentmaintainlittletoit,solongasitdoesn'
tburn,itwillnotbebad.
Routerismorethan3layersofequipment,youneedtomasteralotofknowledgeofrouterconfiguration.Differentbrandsofdifferentmethodsofuse,youneedtohavetargetedlearning.
Agreement。
OpticaltransceiverisalightsignaltwistedpairsignalofshortdistanceandlongdistanceEthernettransmissionmediaconversionunitswap,inmanyplaces,alsoknownasphotoelectricconverteroropticalfiberconverter(FiberConverter).
FiberoptictransceiversaregenerallyusedinEthernetcablecannotcover,mustusefibertoextendthetransmissiondistanceoftheactualnetworkenvironment,atthesametimetohelpthelastmilefiberlineconnectedtometropolitanareanetworkandtheouternetworkalsoplayedahugerole.Withfibertransceivers,usersalsoneedtoupgradethesystemfromthecopperwiretothefiber,butthelackoffunds,manpowerortimeusersprovideaninexpensivesolution.Inordertoensurefullcompatibilitywithothermanufacturers,networkrepeaters,hubsandswitchesandothernetworkequipment,opticalfibertransceiverproductsmuststrictlycomplywith10Base-T,100Base-TX,100Base-FX,IEEE802.3andIEEE802.3uEthernetstandard.Inaddition,intheEMCantielectromagneticradiationshouldbeconsistentwithFCCPart15.Atpresent,duetothedomesticmajoroperatorsarevigorouslybuildingresidentialnetwork,campusnetworkandenterprisenetwork,sotheamountoffiberoptictransceiverproductsarealsoconstantlyimproving,inordertobettermeettheneedsoftheconstructionofaccessnetwork.
Opticaltransceiverstypicallyhavethefollowingbasicfeatures:
1.providedatatransmissionwithultralowlatency.
2.completelytransparenttonetworkprotocols.
3.usingdedicatedASICchiptoachievedatalinespeedforwarding.ProgrammableASICbringsmanyfunctionsintoonechip,whichhastheadvantagesofsimpledesign,highreliability,lowpowerconsumption,andsoon.Itcanmaketheequipmentgethigherperformanceandlowercost.
4.frametypeequipmentcanprovidethehotswapfunction,easytomaintainandcontinuouslyupgrade.
5.networkmanagementequipmentcanprovidenetworkdiagnosis,upgrade,statusreport,exceptionreportingandcontrolfunctions,canprovideacompleteoperationlogsandalarmlogs.
6.equipmentuses1+1powersupplydesign,supportsultrawidepowersupplyvoltage,realizesthepowersupplyprotectionandtheautomaticswitching.
7.supportsultrawideoperatingtemperaturerange.
8.supportscompletetransmissiondistance(0~120km)
Inbrief,thefiberoptictransceiverisaconverterthatusesfiberasthephysicalmediumandconvertstheEthernetsignaltotheopticalsignal
Whatisfibertransceiver?
:
OpticalfibertransceiverisakindofEthernettransmissionmediaconversionunitwhichtransfersshortdistancetwistedpairelectricalsignalsandlongdistanceopticalsignals.Itisalsocalledphotoelectricconverterinmanyplaces.TheproductsaregenerallyusedinEthernetcablecannotcover,mustusefibertoextendthetransmissiondistanceoftheactualnetworkenvironment,theapplicationandtheaccesslayerisusuallylocatedinthebroadbandmetropolitanareanetwork;
atthesametimetohelpthelastmilefiberlineconnectedtometropolitanareanetworkandtheouternetworkalsoplayedahugerole.
Theenterpriseintheinformationinfrastructure,usuallypaymoreattentiontotherouterandswitchcardandnetworkequipmentfordataexchangenodes,butoftenneglectthechangeofmediumthisnoncorenetworkequipmentessential.Especiallyinsomeoftherequirementsofahighdegreeofinformation,thedataflowofthelargergovernmentinstitutionsandenterprises,networkconstructionshouldbedirectlyconnectedtothebackbonenetworkusingopticalfiberasthetransmissionmedium,transmissionmediumandinternalLANforcopperwire,
Itisnecessarytoensurethesmoothtransferofdatapacketsbetweendifferentnetworks.
Classificationoffiberoptictransceivers:
Atpresent,therearemanymanufacturersofopticalfibertransceiversbothathomeandabroad,andtheproductlinesarealsoveryrich.Inordertoensurefullcompatibilitywithothermanufacturers,networkrepeaters,hubsandswitchesandothernetworkequipmen
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