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 interconnected, 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:

计算机网络的基本知识

计算机网络的基本知识_电脑基础知识_IT/计算机_专业资料。1.计算机网络组成 计算机...路由器英文名 Router,路由器是互联网络枢 纽、 “交通警察” 。 基本概念:...

基础的计算机网络知识_图文

基础的计算机网络知识_电脑基础知识_IT/计算机_专业资料 暂无评价|0人阅读|0次下载|举报文档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...

计算机网络和计算机基础的英文缩写

计算机网络计算机基础的英文缩写_计算机硬件及网络_IT/计算机_专业资料。计算机网络计算机基础的英文缩写计算机网络英文缩写词 ACK (ACKnowledgement) 确认 ADSL (Asy...

计算机网络复习PPT的WORD文档

计算机网络体系结构 计算机网络体系结构 1、网络协议 P25:为网络中的数据交换而建立的规则、标准或约定。 网络协议三要素:语法、语义和同步 2、网络体系结构 P27:...

1、大学计算机一级基础知识计算机网络的基本知识

一、选择题(计算机基础知识计算机网络的基本知识) (20 分) 1、计算机界常提到的"2000 年问题"指的是( )。 A)计算机将在 2000 年大发展问题 B)计算机病毒将...

计算机网络的基本知识

有关计算机网络基础知识的介绍有关计算机网络基础知识的介绍隐藏>> 第五章 网络基础知识 更多资料 qq:122329483 卢老师 计算机网络基础知识复习。计算机网络 现代计算机...

清华大学计算机网络课件(第一章)

清华大学计算机网络课件(第一章)_工学_高等教育_教育...子网 IMP 是在第二代计算机通信网络中出现称为...2014计算机一级WPS及基础... 2014年9月计算机三级软件...

高人推荐的最好的计算机网络基础教程

高人推荐最好的计算机网络基础教程_电脑基础知识_IT/计算机_专业资料。最新实用...ATM 是英文 Asynchronous Transter Mode 缩写,称为异 步传输模式。 ATM 采用...

华中科技大学计算机网络课件 习题讲解

华中科技大学计算机网络课件 习题讲解_工学_高等教育...基本问题开始研究传播时延和传输时延,这是数据网络中...e)该分组的第一个比特在从 A 到 B 的链路上...

毕业论文_《计算机网络基础》课件制作与设计

毕业论文_《计算机网络基础课件制作与设计_IT认证_资格考试/认证_教育专区。1. 基于 C8051F 单片机直流电动机反馈控制系统设计与研究 2. 服务器研究 3. ...
更多相关标签:
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