Multiple choice

Which of the following statements is true about PAP in the authentication of a PPP session?

  1. PAP uses a two-way handshake.

  2. The password is unique and random.

  3. PAP conducts periodic password challenges.

  4. PAP uses MD5 hashing to keep the password secure.
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A Correct answer
Explanation

PAP uses a simple two-way handshake: the authenticator sends a challenge, and the peer responds with the username and password in plaintext. PAP is not secure as it transmits credentials unencrypted and doesn't use hashing like CHAP does.

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