Which of the following are key characteristics of PPP? （）
- A、can be used over analog circuits
- B、maps Layer 2 to Layer 3 address
- C、encapsulates several routed protocols
- D、supports IP only
- E、provides error correction
正确答案:A,C,E
答案解析:有
微信扫一扫手机做题
多做题，通过考试没问题！
思科认证考试