Correct Answer: B
PPPoE (Point-to-Point Protocol over Ethernet) uses a discovery stage before establishing the actual PPP session. The correct sequence is:
* Initialization # Client sends a PADI (PPPoE Active Discovery Initiation)
* Offer # Server responds with PADO (PPPoE Active Discovery Offer)
* Request # Client sends PADR (PPPoE Active Discovery Request)
* Session Confirmation # Server sends PADS (PPPoE Active Discovery Session-confirmation)
* A.#Wrong sequence
* B.#Correct - Matches the technical flow: PADI # PADO # PADR # PADS
* C.#Incorrect order
* D.#Incorrect order
Extract from MTCNA Course Material - PPPoE Process:
"The PPPoE discovery stage includes PADI, PADO, PADR, and PADS messages. This translates to Initialization, Offer, Request, Session confirmation." Extract from MikroTik Wiki - PPPoE Protocol:
"The discovery stage is used to establish a PPPoE session and includes four steps: PADI, PADO, PADR, and PADS."