V2EX multicast

Multicast

释义 Definition

multicast(名词/动词):在计算机网络中指“多播/组播”,即把同一份数据从一个发送者同时发送给一组接收者(而不是所有人或单个对象)。常用于视频会议、直播分发、网络路由与服务发现等场景。(注:也可作动词,表示“进行多播发送”。)

发音 Pronunciation

/mltikst/

例句 Examples

Multicast sends one stream to many receivers.
多播把同一条数据流发送给多个接收者。

To reduce bandwidth usage, the system multicasts updates only to devices that have joined the group.
为了降低带宽占用,系统只向加入该组的设备多播更新数据。

词源 Etymology

由 **multi-**(“多、多个”)+ cast(“投送、播送”,如 broadcast“广播”中的 cast)组合而成,字面意思是“向多个对象投送/播送”。该词在网络通信语境中普及于 20 世纪后期,随着 IP 多播等技术发展而固定为专业术语。

相关词 Related Words

文学与著作中的用例 Literary / Notable Works

  • RFC 1112 Host Extensions for IP Multicasting(定义并推广 IP Multicast 的基础性文档)
  • RFC 3376 *Internet Group Management Protocol, Version 3 (IGMPv3)*(多播组成员管理的重要规范)
  • Kurose & Ross, Computer Networking: A Top-Down Approach(网络教材中讲解多播与相关协议的章节常出现该词)
  • Stevens, TCP/IP Illustrated(在 IP 层与相关机制讨论中涉及 multicast 术语)
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