问题 问答题


在一个基于TCP/IP协议的网络中,每台主机都有会有一个IP地址(如:Internet)。Inter- net上的每台主机都有一个惟一的IP地址,根据获得IP址的方式不同,可以分为静态IP,动态IP。例如:用宽带入网,一定会有一个固定的IP地址,每次连入Internet的IP地址都一样,而用拔号上网(如用:Modem),每次连入Internet时都能从ISP那里获得一个IP地址且每次所获得的可能都不同。ISP为什么能够给用户分配一个IP地址呢这时因为有DHCP服务器的存在,根据在Linux中建立DHCP服务器的实例回答问题。

[问题1]
为了使DHCP服务器能为Windows平台的主机服务,必须要在LINUX服务器上加上一条255.255.255.255的路由(因为Windows平台的主机都是以广播方式搜索DHCP服务器)为了以后每次启动时自动执行,应该在/etc/rtc.d/rc.local中加一条什么命令

答案

参考答案:

解析:为了使DHCP服务器能为Windows平台的主机服务,必须要在Linux服务器上加上一条255.255.255.255的路由为了以后每次启动时自动执行,可以在/etc/rtc.d/rc.local中加入以下的一条命令: route add-host 255.255.255.255 dev eth0

阅读理解

阅读理解。

     Shlander is a man from space. He thinks the people and things on the earth are very strange. He is

now writing a letter to his friend at home. Here is part of his letter.  Read it and answer the questions.

     Now I am in a strange world. It is very nice. There are many new things here. There are many earth

monsters here, too. The earth monsters look very funny. They have just one head, two arms and two

legs. They have thin black strings on their heads. Some earth monsters have brown or yellow strings. The

earth monsters have a hole in their face. Every day, they put nice things and balls from the trees into the

hole. They put water into the hole, too. The earth monsters do not walk very fast. They move from place

to place in tin boxes.

     At night, the earth monsters like to look at a square window box. This box also has very small earth

monsters in it.

根据短文内容,选择正确答案。

1. Shlander thinks the people and things on the earth are very _         .

A. strange        

B. nice

C. different        

D. beautiful

2. Shlander thinks man on the earth is           

A. a monkey

B. an earth monster

C. a tin box

D. a strange world

3. The earth monster doesn't have            .

A. heads, arms or legs

B. brown or yellow strings on its head

C. a hole on its face

D. a swing on its body

4. The earth monsters don't put _          on their holes.

A. nice things          

B. balls

C. fire                

D. water

5. The square window box is              .

A. a car or a bus

B. a very small earth monster

C. a TV set

D. a radio

单项选择题