Chapter 8The Internet 8.1.2 THE INTERNET: KEY TECHNOLOGY CONCEPTS In 1995, the Federal Networking Council (FNc) took the step of passing a resolution formally defining the term Internet Internet"refers to the global information system that- l. is logically linked together by a globally unique address space based on the Internet Protocol(Pl or its subsequent extensions/follow-ons 在1995年,联邦的网络委员会(FNC通过了一个关于因特网术语正式定义的决议。 “因特网”是这样的全球信息系统 1.通过以因特网协议或其扩展或继续为基础的、独特的地址空间被逻辑性 地联结起来 8
Chapter 8 The Internet 计算机专业英语 8-11 8.1.2 THE INTERNET: KEY TECHNOLOGY CONCEPTS In 1995, the Federal Networking Council (FNC) took the step of passing a resolution formally defining the term Internet. “Internet” refers to the global information system that— I. is logically linked together by a globally unique address space based on the Internet Protocol (IP) or its subsequent extensions/follow-ons; 在 1995 年，联邦的网络委员会(FNC)通过了一个关于因特网术语正式定义的决议。 “因特网”是这样的全球信息系统—— I. 通过以因特网协议或其扩展或继续为基础的、独特的地址空间被逻辑性 地联结起来；
Chapter 8The Internet 8.1.2 THE INTERNET: KEY TECHNOLOGY CONCEPTS l. is able to support communications using the Transmission Control ProtocollInternet Protocol TCP/P suite or its subsequent extensions/follow. ons, and/or other IP-compatible protocols, and l. provides, uses or makes accessible, either publicly or privately, high level services layered on the communications and related infrastructure described herein l能够支持使用TcPP(传输控制协议因特网协议)组或其扩展 /继续、和/或其他与P协议因特网协议)兼容的协议进行的 通信;并且 l提供、使用或使可访问此处描述的通信及其相关基础设施 (不论公用的还是专用的)上分层次的高水平服务。 8 -12
Chapter 8 The Internet 计算机专业英语 8-12 8.1.2 THE INTERNET: KEY TECHNOLOGY CONCEPTS II. is able to support communications using the Transmission Control Protocol/Internet Protocol (TCP/IP) suite or its subsequent extensions/follow- ons, and/or other IP-compatible protocols; and III. provides, uses or makes accessible, either publicly or privately, high level services layered on the communications and related infrastructure described herein. II.能够支持使用TCP/IP(传输控制协议/因特网协议)组或其扩展 /继续、和/或其他与IP协议(因特网协议)兼容的协议进行的 通信；并且 III.提供、使用或使可访问此处描述的通信及其相关基础设施 (不论公用的还是专用的)上分层次的高水平服务
Chapter 8The Internet 8.1.2 THE INTERNET: KEY TECHNOLOGY CONCEPTS Based on the definition the internet means a network that uses the IP addressing scheme, supports the Transmission Control Protocol(TCP), and makes services available to users much like a telephone system makes voice and data services available to the public 基于这个定义,因特网表示这样一个网络—使用|P地址分配 方案、支持传输控制协议,并使用户可以使用多种服务——一与 电话系统使公众能够使用声音和数据服务非常类似。 8-13
Chapter 8 The Internet 计算机专业英语 8-13 Based on the definition, the Internet means a network that uses the IP addressing scheme, supports the Transmission Control Protocol (TCP), and makes services available to users much like a telephone system makes voice and data services available to the public2. 基于这个定义，因特网表示这样一个网络——使用IP地址分配 方案、支持传输控制协议，并使用户可以使用多种服务——与 电话系统使公众能够使用声音和数据服务非常类似。 8.1.2 THE INTERNET: KEY TECHNOLOGY CONCEPTS
chapter 8 The Internet 8.1.2 THE INTERNET: KEY TECHNOLOGY CONCEPTS Behind this formal definition are three extremely important concepts that are the basis for understanding the Internet packet switching, the TCP/IP communications protocol, and client/server computing. Although the Internet has evolved and changed dramatically in the last 30 years these three concepts are at the core of how the Internet functions today and are the foundation for Internet li 在这个正式的定义背后,隐含着三个极其重要的概念:分组交 换、TcPP(传输控制协议网际协议)通信协议和客户机服务 器计算技术,它们乃是理解因特网的基础。尽管因特网在过去 30年发生了引人注目的进化和变化,但这三个概念仍是今天因 特网运转的核心,也是因特网Ⅲ的基础。 8 -14
Chapter 8 The Internet 计算机专业英语 8-14 Behind this formal definition are three extremely important concepts that are the basis for understanding the Internet: packet switching, the TCP/IP communications protocol, and client/server computing3. Although the Internet has evolved and changed dramatically in the last 30 years, these three concepts are at the core of how the Internet functions today and are the foundation for Internet II. 在这个正式的定义背后，隐含着三个极其重要的概念:分组交 换、TCP/IP(传输控制协议/网际协议)通信协议和客户机/服务 器计算技术，它们乃是理解因特网的基础。尽管因特网在过去 30年发生了引人注目的进化和变化，但这三个概念仍是今天因 特网运转的核心，也是因特网II的基础。 8.1.2 THE INTERNET: KEY TECHNOLOGY CONCEPTS
Chapter 8The Internet 8.1.2 THE INTERNET: KEY TECHNOLOGY CONCEPTS Packet Switching Packet switching is a method of slicing digital messages into parcels called "packets, sending the packets along different communication paths as they become available, and then reassembling the packets once they arrive at their destination. Prior to the development of packet switching, early computer networks used leased, dedicated telephone circuits to communicate with terminals and other computers. In circuit- switched networks such as the telephone system, a complete point-to-point circuit is put together, and then communication can proceed 分组交换。分组交换是传输数据的一种方法,它先将数据信息分割成许多 称为“分组”的数据信息包;当路径可用时,经过不同的通信路径发送; 当到达目的地后,再将它们组装起来。在分组交换发展之前,早期计算机 网络使用租用的专用电话线路和终端与其他计算机进行通信。在线路交换 网络如电话系统中,一个完全点对点的线路被连结在一起,然后才能进行 通信。 开算机专业 8-15
Chapter 8 The Internet 计算机专业英语 8-15 Packet Switching. Packet switching is a method of slicing digital messages into parcels called “packets, ” sending the packets along different communication paths as they become available, and then reassembling the packets once they arrive at their destination. Prior to the development of packet switching, early computer networks used leased, dedicated telephone circuits to communicate with terminals and other computers. In circuit- switched networks such as the telephone system, a complete point-to-point circuit is put together, and then communication can proceed. 分组交换。分组交换是传输数据的一种方法，它先将数据信息分割成许多 称为“分组”的数据信息包；当路径可用时，经过不同的通信路径发送； 当到达目的地后，再将它们组装起来。在分组交换发展之前，早期计算机 网络使用租用的专用电话线路和终端与其他计算机进行通信。在线路交换 网络如电话系统中，一个完全点对点的线路被连结在一起，然后才能进行 通信。 8.1.2 THE INTERNET: KEY TECHNOLOGY CONCEPTS