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The defacto standard Application Program
The defacto standard Application Program
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2022-08-02
46
问题
The defacto standard Application Program Interface (API) for TCP/IP applications is the “sockets” interface. Although this API was developed for ( ) in the early 1980s it has also been implemented on a wide variety of non-Unix systems。 TCP/IP ( )written using the sockets API have in the past enjoyed a high degree of portability and we would like the same ( )with IPv6 applications。 But changes are required to the sockets API to support IPv6 and this memo describes these changes。These include a new socket address structure to carry IPv6 ( ),new address conversion functions,and some new socket options。These extensions are designed to provide access to the basic IPv6 features required by TCP and UDP applications,including multicasting, while introducing a minimum of change into the system and providing complete ( )for existing IPv4 applications。问题1选项A.WindowsB.LinuxC.UnixD.DOS问题2选项A.applicationsB.networksC.protocolsD.systems问题3选项A.portabilityB.availabilityC.capabilityD.reliability问题4选项A.connectionsB.protocolsC.networksD.addresses问题5选项A.availabilityB.compatibilityC.capabilityD.reliability
选项
答案
DAADB
解析
对于TCP/IP应用程序而言,事实上的标准应用程序结构(API)是套接字接口。在二十世纪八十年代早期,API是在DOS环境下开发,且在多种非Unix系统上实现。TCP / IP使用套接字API编写的应用程序在过去享有高度的可移植性,我们倾向于在IPv6应用程序中也要实现与之相同的可移植性。但是套接字API支持IPv6和本备忘录描述这些变化,有些改变是必须的。这就包括一个新的套接字地址结构需要携带IPv6地址,新地址转换功能,和一些新的套接字选项。这些扩展旨在提供TCP和UDP应用程序所需的基本IPv6特性,包括多播,当进入一套系统系统时引入最少的变化,且为现有的IPv4应用程序提供完整的兼容性。
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本试题收录于:
中级 网络工程师题库软件水平考试初中高级分类
中级 网络工程师
软件水平考试初中高级
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