环境监察执法资格证考试试题文档格式.docx

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