单项选择题

A.OSNRB.dispersionC.attenuationD.powerbudgetE.amplifier……

Whatisthedifferencebetweenthetransmittedpowerandthesensitivityofthereceiver？（）

A.OSNR
B.dispersion
C.attenuation
D.powerbudget
E.amplifierspacing
F.fourwavemixing

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热门试题

单项选择题SelectakeybenefitofDSL.（）

A.TCPpacketsizescanbeoptimizedbytheroutersothereisnoIPSecorAAL5padding.
B.ThelocalloopisadedicatedconnectionforasinglesubscribertotheDSLAM.
C.AccesstotheWANmediausesapoll/responsemechanismsonotwosubscriberstransmitatthesametime.
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C.UnifiedThreatManagement
D.UltimateThreatMonitoring

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A.LACP
B.PAgP
C.MCPC

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A.Pingsareallowedonlytospecificdevices.
B.CDPinformationisnotexchanged.
C.Portscanscannolongerberun.
D.Somenetworkdiagnosticdataislost.
E.Wirelessdevicesneedtobephysicallyconnectedtotheedgedevice.
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A.Uponstartup，theporttransmits10BPDUs.IftheportreceivesaBPDU，PortFastandBPDUguardaredisabledonthatportanditassumesnormalSTPoperation.
B.TheaccessportignoresanyreceivedBPDU.
C.IftheportreceivesaBPDU，itisplacedintotheerror-disablestate.
D.BPDUguardisonlyconfiguredgloballyandtheBPDUfilterisrequiredforport-levelconfiguration.