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單項選擇題

What is the maximum attainable bandwidth using an analog data modem？（）

A.28.8kbps
B.56kbps
C.128kbps
D.1544kbps

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多項選擇題

Which two factors affect the speed of your DSL connection?（）

A.line quality
B.distance from the CO
C.brand of xDSL modem
D.number of twisted-pair wires used

單項選擇題

Your ERX router is supporting 100 virtual routers.A specific line module supports IP interfaces in 5 virtual routers.How many routing tables are maintained on that module？（）

A.0
B.1
C.5
D.100

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