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SelectakeybenefitofDSL.（）

A.TCPpacketsizescanbeoptimizedbytheroutersothereisnoIPSecorAAL5padding.
B.ThelocalloopisadedicatedconnectionforasinglesubscribertotheDSLAM.
C.AccesstotheWANmediausesapoll/responsemechanismsonotwosubscriberstransmitatthesametime.
D.TherearenodistancerequirementsfromtheCentralOffice(CO).
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All－in－oneUTMsecuritygatewaysarestartingtodisplaceroutersinmanysmallbusinessnetworks.WhatdoesUTMstandfor？（）

A.UnitedThreatMonitor
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C.UnifiedThreatManagement
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WhichprotocoldoestheUCSFabricInterconnectsupportonportchanneluplinks?（）

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