Palo Alto Networks (PANW) Certified Network Security Administrator (PCNSA) Practice Exam

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Prepare for the Palo Alto Networks Certified Network Security Administrator Exam with flashcards and multiple choice questions. Each question includes hints and explanations to boost your confidence and readiness!

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Which interface type supports Point-to-Point Protocol over Ethernet (PPPoE)?

Layer 2
Layer 3
Virtual Interface
Management Interface

The correct answer is: Layer 3

The support for Point-to-Point Protocol over Ethernet (PPPoE) is inherently tied to Layer 2 interfaces. PPPoE operates at the data link layer, which is the second layer in the OSI model, where it encapsulates PPP frames within Ethernet frames to establish a direct connection over a shared physical medium. Layer 2 interfaces are specifically designed to handle traffic at this level, managing the framing and packetizing necessary for establishing links over Ethernet. This inclusion of PPPoE as a protocol emphasizes the interaction with Layer 2 technology, which is responsible for defining how data packets are framed and addressed before being sent over to the network through Ethernet. Although Layer 3 interfaces manage IP traffic and can transport data through various networking means, they do not specifically support PPPoE directly, making Layer 2 the correct choice for this question.