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单选题
A user is connected on a DSL line and is using a PPP over Ethernet service.Which network device strips the ATM header from the datagram and investigates the PPP header?（）
A
DSLAM
B
DSL modem
C
ERX Edge Router
D
customer workstation
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考题
单选题What is the purpose of configuring the router as a PPPoE client?（）A
to provide VPN access over L2TPB
to enable PPP session from the router to the termination device at the headend for metro Ethernet connectivityC
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考题
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考题
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考题
单选题A user is connected on a DSL line and is using a PPP over Ethernet service. Which network device encapsulates the datagram inside of an ATM header?（）A
DSLAMB
DSL modemC
ERX Edge RouterD
customer workstation
考题
多选题When multiple PPP over Ethernet subscribers connect using the same DSL modem, which two attributes does the ERX use to differentiate between subscribers? （）(Choose two.)APPP session IDBsubscriber nameCsource MAC addressDdestination MAC address
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