Practice Quiz

Advanced Networking Administrator Test Prep

Category - CCNA

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Which of these commands will display the CHAP authentication process that occurs between two routers on the network?
  1. debug ppp authentication
  2. show chap authentication
  3. show interface serial 0
  4. debug chap authentication
Explanation
Answer: A - The command debug ppp authentication shows the authentication process that PPP uses between point-to-point connections.

Key Takeaway: CHAP is defined as a one-way authentication method. By default, the party that is called must authenticate the calling party. In this case, the calling party also opts to verify the identity of the called party, resulting in a two-way authentication.
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