问题 问答题

某单位拟建立一个Intranet,建立自己的Web服务器、DNS服务器、E-mail服务器和内部业务服务器,Intranet上有几台客户机联网,要求这些机器有的可以连到Internet上,有的只允许访问自己的Web服务器。请做出规划、解决如下问题:

如何规划防火墙,将内部业务服务器和部分PC与Internet隔离?

答案

参考答案:

可以构建一个非军事区,将对外服务的服务器如Web服务器、DNS服务器和E-mail服务器等放置在非军事区,通过外网路由器连接Internet。 在非军事区和内网之间设置路由器或代理服务器作为防火墙,限制外部的访问。

解析:

防火墙是在网络之间通过执行控制策略来保护网络的系统。本题要将内部业务服务器和部分PC与Internet隔离,可以构建一个非军事区,将对外服务的服务器如Web服务器、DNS服务器和E-mail服务器等放置在非军事区,在非军事区和内网之间设置路由器或代理服务器作为防火墙,限制外部的访问。PC可通过外网路由器连接Internet,Internet上限制内部的部分PC访问Internet。

阅读理解

Boxing games are truly widely supported by a lot of people over the world . The sport involves two people fighting with each other inside a ring with a referee making sure that the fight goes on smoothly. The fighters have to be of the same weight to be able to fight and they make use of their fists according to the rules of competition.

There are three ways in winning the game. First, you have to knock out the challenger. Secondly, there is the technical knockout (击倒). This usually happens when the rival is seriously hurt and unable to carry on and defend himself. Thirdly, each boxer gets on with the fight until the last round is over and done with and the winner is judged according to the scores he gets.

The first boxing champion was James Figg who came from England. It was in 1719 that the word "boxing" was known. The sport then was completely different from what you are used to seeing and observing nowadays. In 1743 Jack Broughton, a boxing title holder, was responsible for coming up with the rules and regulations to make the fight more manageable.

Under these rules, a boxer who falls and does not fight after 30 seconds has elapsed is declared the loser and any fighter is prevented from hitting his opponent when he is already down. Broughton was also the one who created the mufflers -- a kind of gloves with padding which were used during presentations and training.

Today, the sport has a total of 12 rounds with three minutes playing time for each round. Boxers are given a minute for them to rest or for consultation with their respective coaches. A referee has the responsibility of making sure that the boxers carry on with the fight according to the rules of the sport. The judges have the task of evaluating each fighter and give the fighter scores according to their punches(拳法).

小题1:Which ways decide that the boxer is the winner in the boxing game?

a. The boxer is prevented from hitting his opponent.

b. The boxer is unable to carry on and defend himself.

c. The boxer is given the highest scores by the judges.

d. The boxer has to knock out the challenger technically.

e The boxer falls but is able to fight after 30 seconds.

f. The boxer is able to get on with fight until the last round.

A.a,b,c

B.d, e, f,

C.c, d, f

D.a, b, e小题2:Which of the following is TRUE according to the text?

A.The first boxing champion was James Figg from Scotland.

B.Jack Broughton created a kind of gloves with paddling for boxers.

C.The coaches evaluate each fighter and give the fighter scores.

D.In 1719 the rules for boxing games were put forward.小题3:Which of the following might be the best title for the text?

A.Regulations for Boxing Game.

B.Three Ways to Win Boxing Game.

C.The First Boxing Champion

D.The Story Behind Boxing

判断题