问题 填空题

PPP是SLIP的继承者,它提供了跨过同步和异步电路实现路由器到路由器和主机到网络的链接。CHAP和PAP通常被用于在PPP封装的串行线路上提供安全性认证。使用CHAP和PAP认证,每个路由器通过名字来识别,可以防止未经授权的访问。解释配置中后面数字对应行的内容含义。

路由器Router1和Router2的S0口均封装PPP协议,采用CHAP做认证,如下图所示。

设置如下:

Router1:hostname router1 (46)

Username router1 password xxx (47)

Interface serial0

Ip address 192.200.10.1 255.255.255.0

Encapsulation ppp (48)

Clockrate 1000000 (49)

Ppp authentication chap (50)

!

Router2:

hostname router2

Username router password xxx

Interface serial0

Ip address 192.200.10.2 255.255.255.0

Encapsulation ppp

Ppp authentication chap

46()

答案

参考答案:路由器名为router1

阅读理解

阅读理解。

Dear Henry,

     How are you? I'm writing to you in my school. It's a middle school. Our school is very nice. There are

about 2000 students and 150 teachers in our school. There are three grades and in each grade there are ten

classes. I'm in Class Two, Grade Seven. I go to school from Monday to Friday. There are five classes in

the morning and two in the afternoon. We play games every afternoon after class. I like playing soccer very

much. I often play it with my classmates.

      I have three good friends. One of them is Li Lei. He is a Chinese boy. He often helps me with my

Chinese. I help him study English. The others are twins. They are Lucy and Lily. They come from England.

We often sing and dance together. We are very happy!

     Please write soon. 

                                                                                                                                                Yours, 

                                                                                                                                                  Ben

1. Where is Ben writing to Henry? [ ]

A. At home.

B. In his school.

C. On the playground.

D. Under the tree.

2. How many good friends does Ben have? [ ]

A. One.

B. Two.

C. Three.

D. Four.

3. How many classes are there in his school? [ ]

A. Ten.

B. Twenty.

C. Fifteen.

D. Thirty.

4. How many classes does Ben have a day? [ ]

A. Four.

B. Two.

C. Five.

D. Seven.

5. Which is right? [ ]

A. The twins are English.

B. Li Lei is a Japanese.

C. Ben has classes on Saturday.

D. Ben doesn't know Li Lei or the twins.

单项选择题