At which layer of the OSI model does PPP perform?

The correct answer is B. Layer 3. NOTE: The answer key appears to contain an error. PPP (Point-to-Point Protocol) operates at Layer 2 (the Data Link layer) of the OSI model, making option A the technically correct answer. PPP provides framing, error detection, and optional authentication at the Data Link layer. I

Implement Wide-Area Networks

Question

At which layer of the OSI model does PPP perform?

Options

ALayer 2
BLayer 3
CLayer 4
DLayer 5
ELayer 7

How the community answered

(24 responses)

B
92% (22)
C
4% (1)
D
4% (1)

Explanation

NOTE: The answer key appears to contain an error. PPP (Point-to-Point Protocol) operates at Layer 2 (the Data Link layer) of the OSI model, making option A the technically correct answer. PPP provides framing, error detection, and optional authentication at the Data Link layer. It does NOT operate at Layer 3 (Network layer). This question's answer key is incorrect - the right answer should be A (Layer 2).

Topics

#PPP#OSI model#Layer 2#WAN protocols

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