A 1 Gbit/s point-to-point millimeter-wave link installed in the UAE
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.
A point-to-point wireless unit with a built-in antenna at Huntington Beach, California

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.

- Unicast

However, on the data link layer, a repeater hub provides point-to-multipoint connectivity – each frame is forwarded to all nodes – while a switch provides virtual point-to-point connections – each unicast frame is only forwarded to the destination node.

- Point-to-point (telecommunications)
A 1 Gbit/s point-to-point millimeter-wave link installed in the UAE

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Overall

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Broadcasting (networking)

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Method of transferring a message to all recipients simultaneously.

Method of transferring a message to all recipients simultaneously.

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This is in contrast with the point-to-point method in which each sender communicates with one receiver.

This is in contrast to unicast addressing in which a host sends datagrams to another single host, identified by a unique address.