unit8 v2unt8 v2.ppt

信息管理专业英语教程 人民邮电出版社 Unit 8 Introduction to Networking and Terminology New Words New Words New Words Phrases act as 担任,充当;起...作用 separate from 分离,分开 divide into 分成 identification number 标识号 turn on 开启,开始 relate to 涉及 hand out 把...拿出来,分发 figure out 合计为,计算出,解决,断定 belong to 属于 Abbreviations IP (Internet Protocol) 网际协议 NAT (Network Address Transform) 网络地址转换 DHCP (Dynamic Host Control Protocol)动态主机控制协议 DNS (Domain Name Service) 域名服务 URL (Uniform Resource Locator) 统一资源定位符 DLS (Digital Subscriber Line) 数字用户线路 ISP (Internet Service Provide) 因特网服务提供商 Notes [1] An IP address is a set of four three-digit numbers divided by periods. [2] An IP address acts as an identification number for a computer so that other computers can identify what computer it is communicating with. [3] Computers behind NAT do not have IP address that are directly connected to the Internet. Notes [4] There are some IP addresses that are reserved for internal networks, such as 192.168.x.x, 10.0.x.x, etc. where x can represent any number from 0 to 255. 本句中，that are reserved for internal networks是一个定语从句，修饰和限定some IP addresses，where x can represent any number from 0 to 255也是一个定语从句，修饰和限定192.168.x.x, 10.0.x.x etc.。 Notes [5] Every IP address is divided into ports, so that multiple programs to send and receive data at the same time can use one IP address. [6] An IP address generally takes for form of four 0 through 255 numbers which separated by periods. [7]The order in which the computerare turned on affects which computer gets which IP. [8] Port forwarding forwards a port to a certain IP address. Notes [9] A domain name is what you usually type into the web browser when you want to view a page without the www part. what you usually type into the web browser when you want to view a page without the www part是一个表语从句，是对A domain name的解释。when you want to view a page在从句中作时间状语，without the www part是介词短语，作定语，修饰和限定a page。 Notes [10] when your router is using NAT, it is taking data fro