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.
正确答案:B,C,E
答案解析:有
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