问题 填空题

试题二

如图1-3所示,某校园网使用2.5Gbps的POS技术与CERNET相连,POS接口的帧格式使用SONET,并要求在R3上封禁所有目的端口号为1434的UDP数据包进入校园网。

请阅读以下R3关于POS接口和访问控制列表的配置信息,并补充(6)~(10)空白处的配置命令或参数,按题目要求完成路由器R3的相关配置。

R3的POS接口配置:

Router-R3# configure terminal

Router-R3(config)#

Router-R3(config)# interface pos3/1

Router-R3(config-if)# description To CERNET

Router-R3(config-if)# bandwidth (46)

Router-R3(config-if)# ip address 193.52.37.1 255.255.255.252

Router-R3(config-if)# crc 32

Router-R3(config-if)# pos framing sonet

Router-R3(config-if)# no ip directed-broadcast

Router-R3(config-if)# pos flag (47)

Router-R3(config-if)# no shutdown

Router-R3(config-if)# exit

Router-R3(configf)#

R3的访问控制列表配置:

Router-R3(config)# access-list 130 (48) any any eq 1434

Router-R3(config)# access-list 130 permit (49) any any

Router-R3(config)# interface pos3/1

Router-R3(config-if)# ip access-group (50)

Router-R3(config-if)# exit

Router-R3(config)# exit

Router-R3# write memory

47()

答案

参考答案:s1 s0 0

阅读理解

阅读理解

       There are students from all over the world at the United World School. In this school these

students study and spend their free time together. The school believes this will help them grow up

to be knowledgeable, caring and friendly.

       Once a year, there is a special "United Nations" show. Students are allowed to show anything

they want, but anything that comes from their traditional cultures. To get ready for the festival, they

have to teach each other.  And the school believes this will help them understand and enjoy the

culture of their friends better.

       This school also believes that students should be allowed to make some decisions themselves.

For example, the older students are allowed to wear what they want and the younger students are

allowed to choose which kind of uniform they want to wear. But all students are asked not to wear

an expensive necklace or something else like that,  and not to wear clothes that will make other

students unhappy.

       It is never possible to make everybody happy, but if we want to have a much more wonderful

world, it is important for students to understand and enjoy other cultures as well as to be proud of

their own.

1. Where do the students at the United World School come from? _____

A. China    

B. America    

C. Canada    

D. All over the world

2. What are the students allowed to do at the United World School? _____

A. To do everything they want      

B. To wear anything they want

C. To decide something themselves  

D. To choose anything they want

3. Which of the following is NOT right according to the passage? _____.

A. The school can help the students grow up to be friendly    

B. The school allows the students to make some decisions

C. We can make everybody happy by understanding each other    

D. It's important to help the students understand other cultures.

4. What can Li Lei, a Chinese boy, show on the festival according to the passage? ____

A. Play the piano              

B. Act Beijing Opera  

C. Sing an English song        

D.  Have a rock show

5. What does "this" in the passage? ____

A. The "United Nations" show    

B. The traditional culture

C. The school                  

D. The world

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