Unicast

{{Short description|Sending a message to one computer; on a one-to-one basis}} thumb|Unicast is data transmission from a single sender (red) to a single receiver (green). Other devices on the network (yellow) do not participate in the communication. {{routing scheme}}

In computer networking, '''unicast''' is a one-to-one transmission from one point in the network to another point; that is, one sender and one receiver, each identified by a network address.<ref>{{cite web|author=Godred Fairhurst|title=Unicast, Broadcast, and Multicast|url=https://www.erg.abdn.ac.uk/users/gorry/course/intro-pages/uni-b-mcast.html|access-date=2021-11-23|archive-date=2021-11-23|archive-url=https://web.archive.org/web/20211123123211/https://www.erg.abdn.ac.uk/users/gorry/course/intro-pages/uni-b-mcast.html|url-status=dead}}{{sps|date=November 2021}}</ref>

Unicast is in contrast to multicast and broadcast which are one-to-many transmissions.<ref>{{cite web|url=http://support.microsoft.com/kb/291786|title=Differences Between Multicast and Unicast|publisher=Microsoft|archive-url=https://web.archive.org/web/20080203132015/http://support.microsoft.com/kb/291786|archive-date=2008-02-03|url-status=dead|access-date=2008-02-04}}</ref>

Internet Protocol unicast delivery methods such as Transmission Control Protocol (TCP) and User Datagram Protocol (UDP) are typically used.

==References== {{Reflist}}

==External links== * {{cite web |url=https://technet.microsoft.com/de-de/library/cc736574%28WS.10%29.aspx |title= What Is Unicast IPv4 Routing? |publisher=Microsoft |access-date=2010-09-30 }}

Category:Internet architecture