Broadcast Network
This is a one-way communication.
Provided broadcast radio & TV.
The Broadcast pattern is one in which a sender emits a message to all receivers on the network. The network router does the work of discovering devices on the network and forwarding the message accordingly.
Example
An example of the Broadcast pattern is the Address Resolution Protocol (ARP). Under ARP, the router knows the physical devices on the network and then correlates the device identifier, the MAC address, to the logical IP address, and then forwards the message accordingly.
Broadcast (networking)
Broadcasting is a type of casting (sending data packets from one host to another host) that involves sending data to all the hosts present in a network.
https://en.wikipedia.org/wiki/Broadcasting_(networking)