单选题What is the purpose of configuring the router as a PPPoE client?（）Ato provide VPN access over L2TPBto enable PPP session from the router to the termination device at the headend for metro Ethernet connectivityCfor DSL connectivity and removing the need for the end - user PC to ru n the PPPoE client softwareDfor connecting the router to a cable modem, which bridges the Ethernet frames from the router to the cable modem termination system
单选题
What is the purpose of configuring the router as a PPPoE client?（）
A
to provide VPN access over L2TP
B
to enable PPP session from the router to the termination device at the headend for metro Ethernet connectivity
C
for DSL connectivity and removing the need for the end - user PC to ru n the PPPoE client software
D
for connecting the router to a cable modem, which bridges the Ethernet frames from the router to the cable modem termination system
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