During which phase of PPPoE is PPP authentication performed?
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A. B. C. D. E.A
The correct answer is D. the Authentication phase.
PPPoE (Point-to-Point Protocol over Ethernet) is a protocol used to establish a point-to-point connection between two network nodes over an Ethernet network. It is commonly used by Internet Service Providers (ISPs) to provide broadband internet access to their customers.
PPPoE involves several phases of communication between the client and the server before a connection is established. These phases are:
Active Discovery (also known as Discovery): In this phase, the PPPoE client sends a discovery packet to find available PPPoE servers on the network. The server responds with a session ID.
Authentication: In this phase, the PPPoE client and server perform authentication using the PPP protocol. The authentication mechanism used can be Password Authentication Protocol (PAP), Challenge Handshake Authentication Protocol (CHAP), or Extensible Authentication Protocol (EAP).
Session: In this phase, the PPPoE client and server negotiate options and establish a PPP session. Once the session is established, the PPP protocol can be used to transmit data between the client and server.
So, during the Authentication phase, the PPP authentication is performed, where the client and server authenticate each other using a specific authentication protocol. Once authentication is successful, the session can be established, and data can be transmitted using the PPP protocol.
Therefore, the correct answer is D. the Authentication phase.