多选题Which three steps are part of the PPP CHAP 3-way handshake?（）AThe caller sends a challenge to the authenticator.BThe authenticator sends a challenge to the caller.CThe caller encrypts the challenge using a secret.DThe caller sends a success message to the authenticator.EThe authenticator encrypts the challenge using a secret.
多选题
Which three steps are part of the PPP CHAP 3-way handshake?（）
A
The caller sends a challenge to the authenticator.
B
The authenticator sends a challenge to the caller.
C
The caller encrypts the challenge using a secret.
D
The caller sends a success message to the authenticator.
E
The authenticator encrypts the challenge using a secret.
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