V2EX unicast

Unicast

释义 Definition

Unicast(单播):在计算机网络中,把数据从一个发送方传给一个特定接收方的一对一通信方式(相对于广播 broadcast 和组播 multicast)。该词也可作动词,表示“以单播方式发送”。

发音 Pronunciation (IPA)

/junkst/

例句 Examples

The server sends updates to each client using unicast.
服务器使用单播向每个客户端发送更新。

To reduce unnecessary traffic, the router forwards the stream via unicast to a specific device instead of flooding the whole network.
为了减少不必要的流量,路由器采用单播把数据流转发给某一台特定设备,而不是向整个网络泛洪。

词源 Etymology

由 **uni-**(表示“一个、单一”,源自拉丁语 ūnus “一”)+ cast(“投送、发送”,在网络语境中指“发送数据”)组合而成,字面意思是“向一个对象发送”。

相关词 Related Words

文学与著作中的用例 Literary Works

  • Computer Networking: A Top-Down Approach(Kurose & Ross)在讲解传输与网络层通信模型时常与 broadcast/multicast 对照出现。
  • Computer Networks(Andrew S. Tanenbaum & David J. Wetherall)在局域网与网络层转发机制中使用“unicast”描述一对一传输。
  • TCP/IP Illustrated, Volume 1(W. Richard Stevens)在讨论 IP、路由与数据报传递时会出现“unicast”。
  • IETF 文档(如与 IP、多播相关的 RFC 体系中)常用 unicast 与 multicast 作概念区分(尤其在地址与转发语境下)。
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