單項(xiàng)選擇題

During the modem boot process，how does the modem acquire the downstream channel？（）

A.The modem is commanded by the CMTS to set to the specific channel
B.The modem uses the default value in the broadcom chipset
C.The modem tuner sets a level as defined by the DOCSIS specification
D.The modem tuner scans the downstream spectrum until digital QAM modulated signal is encountered

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單項(xiàng)選擇題

What protocol does an IP phone use to learn the voice VLAN ID it should use for voice traffic？（）

A.VTP
B.802.1 q
C.CDP
D.Skinny Station Protocol

單項(xiàng)選擇題

What is the effect of changing DMT interleaved delay from 3 milliseconds to 15 milliseconds？（）

A.Latency remains the same， but throughput is decreased.
B.Latency remains the same， but error correction effectives may also be reduced.
C.Latency is increased， but faster error correction occurs.
D.Fewer ATM PVCs can be provisioned on DSL line.

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During the modem boot process，how does the modem acquire the downstream channel？（）

你可能感興趣的試題

What protocol does an IP phone use to learn the voice VLAN ID it should use for voice traffic？（）

What is the effect of changing DMT interleaved delay from 3 milliseconds to 15 milliseconds？（）

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During the modem boot process，how does the modem acquire the downstream channel？（）

What protocol does an IP phone use to learn the voice VLAN ID it should use for voice traffic？（）