单选题In a DSL network，which device terminates the PPP over Ethernet subscriber’s two-wire phone line？（）ARASBDSLAMCATMswitchDRADIUSserver
单选题
In a DSL network，which device terminates the PPP over Ethernet subscriber’s two-wire phone line？（）
A
RAS
B
DSLAM
C
ATMswitch
D
RADIUSserver
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解析：
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