The name given to simultaneous data transfer to targeted network connected devices, this method generally reduces load on the clients

The name given to simultaneous data transfer to targeted network connected devices, this method generally reduces load on the clients

• Unicast
• Multicast
• Broadcast
• Scattercast 

 

EXPLANATION

Unicast: traffic, many streams of IP packets that move across networks flow from a single point, such as a website server, to a single endpoint such as a client PC. This is the most common form of information transference on networks.

Broadcast: Here, traffic streams from a single point to all possible endpoints within reach on the network, which is generally a LAN. This is the easiest technique to ensure traffic reaches to its destinations.
This mode is mainly utilized by television networks for video and audio distribution. Even if the television network is a cable television (CATV) system, the source signal reaches to all possible destinations, which is the key reason that some channels’ content is scrambled. Broadcasting is not practicable on the public Internet due to the massive amount of unnecessary data that would continually reach at each user’s device, the complications and impact of scrambling and related privacy issues.
Multicast: In this method traffic recline between the boundaries of unicast (one point to one destination) and broadcast (one point to all destinations). And multicast is a “one source to many destinations” way of traffic distribution, means that only the destinations that openly point to their requisite to accept the data from a specific source to receive the traffic stream.

SOURCE

https://www.esds.co.in/blog/difference-between-unicast-broadcast-and-multicast/#sthash.sqHC51wG.dpbs