单选题In a Bridged 1483 network, what Layer 2 encapsulations are passed between the DSL bridge and the ERX?（）A single ATM headerB single Ethernet headerC ATM header followed by a PPP headerD ATM header followed by an Ethernet header
题目
单选题
In a Bridged 1483 network, what Layer 2 encapsulations are passed between the DSL bridge and the ERX?（）
A
single ATM header
B
single Ethernet header
C
ATM header followed by a PPP header
D
ATM header followed by an Ethernet header