问题 问答题

某单位局域网通过ISP提供的宽带线路与Internet相连,ISP分配的公网IP地址为202.117.12.32/29。局域网中一部分计算机通过代理服务器访问Internet,而另一部分计算机不经过代理服务器直接访问Internet,其网络连接方式及相关的网络参数如图1所示。

(1) 根据图1所给出的网络连接方式及相关的网络参数,区域(A)与区域(B)中计算机的网络参数配置为:

区域(A)计算机的“IP地址”(范围):_(1)

区域(A)计算机的“子网掩码”:(2)

区域(A)计算机的“默认网关”:_(3)

区域(B)计算机的“IP地址”(范围):_(4)

区域(B)计算机的“子网掩码”:(5)

区域(B)计算机的“默认网关”:(6)

图1中代理服务器还可以用何种网络连接设备实现?

答案

参考答案:

具有地址转换功能(NAT)的设备,如路由器、防火墙和安装有NAT服务的主机。

解析:

在区域(A) 和(B) 中进行全局IP地址和专用IP地址的转换,可使用一台具有地址转换功能(NAT)的设备.比如路由器、防火墙和安装有NAT服务的主机等。

阅读理解

House of Noodles
We have three sizes bowl of noodles, small, medium and large. A small bowl of mutton and carrot noodles is RMB 5. A medium bowl of beef and potato noodles is RMB 7. A large bowl of chicken and cabbage noodle is RMB 8.
Welcome to our house.

 
Lunch Special
We have some great specials. The cabbage tomatoes and rice lunch special is RMB 3. The beef, carrots and rice lunch special is RMB 5. The dumplings and soup lunch special is RMB 8.
 
Dessert House
What kind of dessert would you like? We have 2 great new specials: (1) Apple, strawberry and ice cream. (2) Banana, orange and ice cream. And what size of dessert would you like? Small, medium or large? And we also have juice and tea.
Time: 11:00 a.m. ---2:00 p.m.
 
 

 
根据表格内容完成下列问题。
小题1:If you want to buy a small bowl of mutton and carrot noodles and two large bowls of chicken and cabbage noodles, you can pay_________.
A.RMB 24B.RMB 13C.RMB 21D.RMB 18
小题2:If you go to the house of noodles, you can buy a medium bowl of ________ noodles.
A.beef and carrotB.beef and potato
C.chicken and eggD.mutton and cabbage
小题3:If you have only RMB 3, you can buy _______ at lunch time.
A.rice, cabbage and tomatoesB.beef, carrots and rice
C.dumplings and soupD.dumplings and tomatoes
小题4:If you want to have some dessert, you can go there at ________.
A.9:00 a.m.B.3:00 p.m.C.1:00 p.m.D.4:00 p.m.
小题5:In the dessert house, you can also buy _________.
A.juice and milkB.juice and teaC.dumplingsD.Noodles
单项选择题