当前位置:首页 >> 高中教育 >> 计算机网络基础知识ppt课件 英文版

计算机网络基础知识ppt课件 英文版


What is a computer network

?? ?

The computer network is the computer system in different geographical location and function of independent by communication lines are in

terconnected, the system realizes the sharing and communication of cyber source in the network management software

sketch map

Main function: to achieve the communication and resource sharing1. Basic function: data communication Main features: resource sharing

data

Classification: wide area network (WAN):Tens to thousands of kilometers local area network (ALN) A few meters to a few kilometers metropolitan area network(MAN) (Between WAN and LAN)

1.2

The basis of computer communication

1、Data communication -- in the form of an electrical signal to the data transmitted from one end to the other end. 2、 The m ai n technol ogy -- "t he maxi m um transmission rate index of data communication" 3、Modulation, demodulation (Modem): converting the data signals and analog signals.

4、Baseband and broadband transmission Baseband transmission (BAB): the original form of the signal into the line. Broadband transmission (BRB): converting the data signal in the computer for analog signal transmission

5、mode of data transmission ?Parallel communication

?Serial communication

1.2.2Computer network system and network protocol 1, Network protocol: must follow the stipulated in the communication process. 2、Network system is generally divided into seven layers: ?The physical layer ?Data link layer ?The network layer ?Transport layer ?The session 会话layer ?The presentation layer ?Application layer

1.2.3Computer network operating system ?Single operation ?Network management 1.2.4 network devices S e r v e r, w o r k s t a t i o n , n e t w o r k c a r d , m o d e m , communication lines, communication equipment.

Dual function of the software

modem

network card

INTERNET与

modem

1.3 Computer LAN
1.3.1Characteristics ?Small range ?The transmission rate is generally megabits per second (Mbps) (ten to 100 million)

?Transmission medium using twisted pair, coaxial cable, optical cable
?Extensive use of bus type, star type structure, supports both point-to-point communication and multipoint communication. ?Easy installation, maintenance, high reliability. ?Easy to learn

INTERNET与

1.3 Computer local area network
hardware system 一、Composition: software system

1、 hardware system

?The server (using high-grade machine, rich shared resources) ?The workstation (personal computer) ?NIC (network adapter) ?Lines of communication ?communication device

网络1

server

sketch map of LAN

?Novell network (operating system (OS):Netware) 2、 software system ?Windows NT (operating system (OS):Windows NT Server)

1.4INTENRET

?Multiple LANs interconnected became a global internet. The Internet is mainly to solve the problem of different network protocols, in order to make the computer network of different types can be connected.

Internet

网络1 networ k1

router

networ k2

网络1

?Internet hardware:

Repeater (amplifying signal function, used to connect the long line)

Bridge (connecting two similar network, expanding the number of users in the network) Router (bridge, the network and the network connection data -- the source host -- multiple routers -- the destination host)

gateway (online different types of different network protocols)

1. What is Internet Internet is a global, the most influential, the most abundant information resources in the internet

1.4.3 Internet language——TCP/IP TCP\/IP is a set of protocols. It is the communication between Internet computer must be a common communication rules

3、File Transfer Protocol(FTP) FTP is one of the traditional service. FTP allows users to transfer files between two computers on the internet


更多相关文档:

计算机网络重点知识总结_谢希仁版

搜试试 7 悬赏文档 全部 DOC PPT TXT PDF XLS ...计算机网络重点知识总结_谢希仁版_电脑基础知识_IT/...它们的名字是用一个英文字母命名,从 a 一直到 m(...

基础的计算机网络知识_图文

搜试试 3 悬赏文档 全部 DOC PPT TXT PDF XLS 广告 百度文库 专业资料 IT...基础的计算机网络知识_电脑基础知识_IT/计算机_专业资料。几乎所有的计算机程序,...

计算机网络ppt习题

计算机网络ppt习题_理学_高等教育_教育专区。计算机网络期末考试复习试题与答案 第一章计算机网络体系结构 1. 计算机网络基本的功能是() B. 资源共享 (连通性) ...

计算机网络的基本知识

搜 试试 7 帮助 全部 DOC PPT TXT PDF XLS 百度文库 专业资料 IT/计算机 ...路由器英文名 Router,路由器是互联网络的枢 纽、 “交通警察” 。 基本概念:...

《计算机网络基础》知识点网页课件说明

计算机网络基础知识点网页课件说明 计算机网络基础知识点网页课件说明(信息技术系 蔡洁) 一、 课程介绍 《计算机网络基础》课程是信息技术系计算机网络技术专业...

14.全国NOC技能竞赛学习课件-计算机及网络基础知识

14.全国NOC技能竞赛学习课件-计算机网络基础知识_IT认证_资格考试/认证_教育专区...中央处理器,英文缩写 CPU(Central Processing Unit) , 也称中央处理单元,主要由...

计算机网络和计算机基础的英文缩写

搜 试试 7 帮助 全部 DOC PPT TXT PDF XLS 百度文库 专业资料 IT/计算机 ...计算机网络计算机基础英文缩写_计算机硬件及网络_IT/计算机_专业资料。计算机网络...

计算机网络工程课件整理

搜 试试 7 帮助 全部 DOC PPT TXT PDF XLS ...计算机网络工程课件整理_理学_高等教育_教育专区。网络...共同构建的基础支撑平台 服务器平台,网络平台,数据库...

计算机网络基础知识_教学设计

搜 试试 7 帮助 全部 DOC PPT TXT PDF XLS ...计算机网络基础知识_教学设计_教学案例/设计_教学研究...设计者: 执教者: 课件制作者: 时间: 年 1 月 ...

计算机教学课件

计算机教学课件_IT/计算机_专业资料。计算机的初级知识...计算机网络基础 第六章 Internet 及其应用 第七章 ...如果你对如下英文缩写都知道,你对计算机可以说了解...
更多相关标签:
计算机基础知识课件 | 计算机基础英文版 | 计算机应用基础课件 | 计算机基础ppt课件 | 计算机基础课件 | 中职计算机基础课件 | 计算机网络基础课件 | 大学计算机基础课件 |
网站地图

文档资料共享网 nexoncn.com copyright ©right 2010-2020。
文档资料共享网内容来自网络,如有侵犯请联系客服。email:zhit325@126.com