You are troubleshooting a WAN connection for TestKing, and on the router you execute the, "debug ppp authentication" command, and view the following output:
What kind of handshake was used for the PPP authentication?（）
- A、one-way
- B、two-way
- C、three-way
- D、No handshakes required during authentication
- E、None of the above
正确答案:C
答案解析:有
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