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At which layer of the OSI model does PPP perform?

At which layer of the OSI model does PPP perform?
A . Layer 2
B . Layer 3
C . Layer 4
D . Layer 5

Answer: A

Explanation:

Point-to-Point Protocol (PPP) is a data link protocol commonly used in establishing a direct connection between two networking nodes. It can provide connection authentication, transmission encryption (using ECP, RFC 1968), and compression.

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