2024年4月13日发(作者：)

教材名称：《计算机专业英语》

主 编： 来永春

出版时间：

电子教案

第 13 次课 学时 2

Project Three LAN Setup and Connecting it to the Internet

授课题目（章，节）

Part A Theoretical Learning

Skill One Foundation of Network

授课类型（请打√）

理论课□√ 研讨课□ 习题课□ 复习课□ 其他□

教学目的：

1 In this part, our target is to improve the speed of reading professional articles and the

comprehension ability of the reader.

have marked specialized vocabulary key words in some paragraphs so that the reader can

quickly grasp the main idea of the sentences and paragraphs.

教学方法、手段：

1. By the computer, projector and blackboard-writing

2. By the student-centered learning, using Classroom Teaching Method, Communicative Teaching

Method, Task-based Teaching Method and Audio-visual Teaching Method

教学重点、难点：

the key words and phrases in the text.

analyze the structure of the complex sentences in the text.

translate the text into Chinese with the help of the reference materials.

describe Foundation of Network

补充内容和

教学内容及过程设计

时间分配

教学设计

Step 1. Learning key words and phrases 20 分钟

network n.网络

wireless adj.无线的

LAN 局域网

MAN 城域网

WAN 广域网

Ethernet n.以太网

FDDI 光纤分布式数据接口

client-server（C/S） 客户/服务器

peer-to-peer network 对等网络

topology n.拓扑结构

Bus network 总线型网络

Ring network 环型网络

Star network 星型网络

Tree network 树型网络

Mesh network 网型网络

communication n. 通信

via prep. 通过,经过

wireless adj. 无线的

physical adj.物理的

classify v. 分类

geographical adj. 地理的

local adj. 地方的,当地的

Ethernet n. 以太网

FDDI 光纤分布式数据接口

Metropolitan adj. 首都的,大城市的

topology n. 拓扑结构

peer-to-peer 对等网络

privilege n. 特权

potential n. 潜能,潜力

mesh n. 网孔,网丝

hierarchical adj. 分等级的

geometrical adj. 几何的,几何学的 5分钟

Step 2. Introduction of training target

1 In this part, our target is to improve the speed of reading professional

articles and the comprehension ability of the reader.

have marked specialized vocabulary key words in some paragraphs so

that the reader can quickly grasp the main idea of the sentences and

paragraphs. 5分钟

Step 3. Leading in a short introduction to Foundation of Network

Computer networks are data communication systems made up of

hardware and software. A network is a collection of computers and devices

connected together via communication devices such as cable telephone

lines, modems, or other means

Step 4. Analyzing the structure of the complex sentences 15分钟

1 When your computer is connected to computer network, users can share

resources, such as hardware devices, software programs, data, and

information.

2. Networks are often classified according to their geographical extent:

LAN, MAN, WAN.

3. There are five major topologies in use today: Bus, Ring, Star, Tree,

and Mesh. Each is used for specific network types, although some

network types can use more than one topology.

Step 5. Memorizing and mastering the following key sentences in the text.

1. A typical LAN spans a small area like a single building or a small 45分钟

campus and operates between 10 Mbps and 2 Gbps.

2. Ethernet and FDDI are examples of standard LANs.

3. MAN is a bigger version of a LAN in a city, it is smaller than a

WAN but larger than a LAN.

4. WAN is sometimes called long haul network, providing communication

over long distance.

5. Usually WANs operate at slower speeds than LANs, and have much greater delay

between connections.

6. The Internet can be correctly regarded as the largest WAN in existence.

7. A network architecture can be described in two ways: client-server and

peer-to-peer.

8. In client-server networks, an administrator can control the privileges of each user.

9. A peer-to-peer network is a type of network where all computers on the

network have the potential to share resources that they have control

over.

` 10. The simplest topology is the Bus , all the devices on the network are

connected to a common cable.

11. In a Ring, all the devices on the network are connected to a common cable which

loops from machine to machine.

12. After the last machine on the network, the cable then returns to the

first device to form a closed loop.

13. In a Star, each device has its own cable that connects the device to a common

hub or concentrator. Only one device is permitted to use each port on the hub.

14. In a Tree network, each device is connected to its own port on a

concentrator in the same manner as in a Star.

15. However, concentrators are connected together in a hierarchical manner.

16. A Mesh topology consists of a network where every device on the network

is physically connected to every other device on the network.

17. This provides a great deal of performance and reliability, however the complexity

and difficulty of creating one increases geometrically as the number of nodes on

the network increases.

Step izing in class.

思考题、作业题、讨论题：

the key words and phrases in the text.

translate the text into Chinese with the help of the reference materials.

te the exercises involved.

课后总结分析：