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【单选题】

While troubleshooting a serial line problem, you enable ppp authentication debugging as shown below:<img src="https://nimg.ppkao.com/2018-07/longzhengxuan/2018073013573782199.jpg?sign=9dc178c8d321b64d4540780c97e3623c&t=62d73ffb" /><br /> <img src="https://nimg.ppkao.com/2018-07/longzhengxuan/2018073013574740148.jpg?sign=ece527bd637a6a464ea0cd374885ce10&t=62d73ffb" /><br /> Based on the command output above, what type of &#39;handshake&#39; was used for PPP authentication?()

A、one-way

B、two-way

C、three-way

D、four-way

E、no handshakes required during authentication

F、None of the above

更多“ While troubleshooting a serial line problem, you enable ppp authentication debugging as shown below:<img src="https://nimg.ppkao.com/2018-07/longzhengxuan/2018073013573782199.jpg?sign=9dc178c8d321b64d4540780c97e3623c&t=62d73ffb" /><br /> <img src="https://nimg.ppkao.com/2018-07/longzhengxuan/2018073013574740148.jpg?sign=ece527bd637a6a464ea0cd374885ce10&t=62d73ffb" /><br /> Based on the command output above, what type of &#39;handshake&#39; was used for PPP authentication?()”相关的问题
第1题

A、while(!0);  B、while(0);  C、while(!1);  D、while(!2);  

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第2题

A、A、语句不存在语法错误,但while循环将执行无限次,引发错误  B、B、语句存在语法错误,while循环不能执行  C、C、语句不存在语法错误,但while循环一次也不执行  D、D、while循环执行1次  

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第10题

A、foreach语句用于循环遍历数组  B、do...while是先判断再运行循环  C、while是先循环再判断条件  D、for循环是条件判断型的循环,跟while相似  

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