Discussion
Which of the following encapsulates PPP frames in Ethernet frames and uses common PPP features like authentication, encryption, and compression?
Answer: C
Correct answer: PPPoE
PPPoE carries PPP frames inside Ethernet frames, which lets a provider keep PPP’s per-subscriber authentication, accounting, encryption and compression while delivering service over an Ethernet-style access network. It is the usual arrangement for DSL and fibre broadband, and PPPoA is its counterpart where the access link is ATM.
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