问题 填空题

某公司设置VPN服务器允许外地的公司员工通过Internet连接到公司内部网络,如图4-1所示。
[*]

VPN路由器配置如下,请解释画线部分含义:

Vpdn-group 1

(8)

Accept-dialin protocol 12tp virtual-template 1 terminate-from hostname a801


(9)
Local name keith

Lcp renegotiation always

(10)
No 12tp tunnel authhentication

答案

参考答案:(8)创建VPDN组1
(9)接受L2TP通道连接请求,并根据虚接口模板1创建虚拟访问,接收远程主机为a80-1的连接
(10)LCP再次协商

解析:处,vpdn group命令的作用是创建一个VPDN组并进入该VPDN组配置模式,1表示所创建VPDN组的组号。第(2)处,accept-dislin protocol 12tp命令的作用是指定接受呼叫时,通道对端的名称及使用virtual-template号。L2TP通道连接请求,并根据vinual-template 1创建virtual-access接口,远端主机为splac。第(3)处,lcp renegotiation命令的作用是开启LNS与client之间重新协商,always表示一直允许进行LCP协商。

阅读理解

This course is for those who want to learn to type, as well as those who want to improve their typing. The course is not common. You are tested in the first class, and begin practising at one of eight different skill levels. This allows you to learn at your own speed. Each program lasts 20 hours. Bring your own paper.

Course fee: $125      Materials:  $25

Two hours for each evening for two weeks. New classes begin every two weeks.

This course is taught by a number of professional business education teachers who have successfully taught typing course before.

UNDERSTANDING COMPUTERS

This twelve-hour course is for people who do not know very much about computers, but who need to learn about them. You will learn what computers are, what they can or can’t do and how to use them.

Course fee:$75  Jan 4,7,11,14,18  Wed.&Sat. 9:00---11:30 a.m.  Equipment fee:$10

David is a professor of Computer Science at Beijing University. He has over twenty years of experience in the computer field.  

STOP SMOKING

Do you want to stop smoking? Have you ever tried and failed? Now is the time to stop smoking using the latest methods. You can stop smoking, and this twelve-course will help you do it.

Course fee:$30  Jan 2,9,16,23   Mon 2:00---5:00 p.m.

Dr. John is a practicing psychologist who has helped hundreds of people stop smoking.

小题1:If you choose the UNDERSTANDING COMPUTERS course, you will have

classes_______.

A.twice

B.three times

C.four times

D.five times小题2:Mr. Black works every morning and evening, but he wants to take part in one of the three

courses. Your suggestion is __________.

A.TYPING

B.UNDERSTANDING COMPUTERS

C.STOP SMOKING

D.all the courses小题3:If you want to learn about computers, and at the same time you want to improve your

typing, you will pay  ______________.

A.$75

B.$150

C.$115

D.$235小题4:The special difference between the TYPING course and the other two is that __________.

A.people with different skill levels pay differently.

B.you will take a test in the first class for level decision

C.you will pay the fee before practicing typing.

D.you will pay less money for your study.

多选题