单项选择题
What is the effect of turning on all available downstream carrier tones in a DMT DSL transmissionsystems？（）
A.Downstream RS error correction effectiveness is reduced
B.The downstream line rate and throughput remains unchanged， but FEC efficiency is reduced
C.The upstream DSL bandwidth is reduced， since less carriers become available for upstream traffic
D.The downstream DSL bandwidth is increased
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相关考题
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单项选择题
WhichstatementisFALSEconcerningtheinterleavedepthvalue？（）
A.A higher interleave depth provides more protection from burst of noise on the HFC network
B.Higher interleave depth increase downstream latency
C.Lower interleave depth cause some packet loss on typical HFC networks
D.None ofthe above -
多项选择题
WhichtwoIOScommandsareequivalentsforputtingaCisco7500OC-12RPRinterfacecardintowrappedmode？（）
A.shutdown [a b]
B.srp shutdown [a b]
C.srp ips request manual-switched [a b] -
单项选择题
BGPbestrouteselectionprocessisbasedonpathattributes.（）
A.True
B.False
