What are 2 protocols used for user with authentication on network device?

What are 2 protocols used for user with authentication on network device?
A. CHAP
B. Radius
C. 802.1x
D. PAP
E. TACACS+

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2 thoughts on “What are 2 protocols used for user with authentication on network device?

    1. The question is protocols, not services.
      Therefor
      A. CHAP – Challenge Handshake Authentication Protocol
      D. PAP – Password Authentication Protocol

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