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(ISC)2

SSCP · Question #899

Which of the following protects a password from eavesdroppers and supports the encryption of communication?

The correct answer is A. Challenge Handshake Authentication Protocol (CHAP). CHAP: A protocol that uses a three way hanbdshake The server sends the client a challenge which includes a random value(a nonce) to thwart replay attacks. The client responds with the MD5 hash of the nonce and the password. The authentication is successful if the client's…

Submitted by lucia.co· Apr 18, 2026Access Controls

Question

Which of the following protects a password from eavesdroppers and supports the encryption of communication?

Options

  • AChallenge Handshake Authentication Protocol (CHAP)
  • BChallenge Handshake Identification Protocol (CHIP)
  • CChallenge Handshake Encryption Protocol (CHEP)
  • DChallenge Handshake Substitution Protocol (CHSP)

How the community answered

(22 responses)
  • A
    95% (21)
  • D
    5% (1)

Explanation

CHAP: A protocol that uses a three way hanbdshake The server sends the client a challenge which includes a random value(a nonce) to thwart replay attacks. The client responds with the MD5 hash of the nonce and the password. The authentication is successful if the client's response is the one that the server expected.

Topics

#CHAP#Authentication Protocols#Password Protection#Eavesdropping Prevention

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