In a Bridged 1483 network, what Layer 2 encapsulations are passed between the DSL bridge and the ERX?()

题目内容(请给出正确答案)
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

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