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FAQs:

MULTICAST:

Multicast is communication between a single sender and multiple receivers (e.g. Satellite broadcasting).

But together with anycast and unicast, multicast is also one of the packet types in the Internet Protocol Version 6 (IPv6). Multicast is supported through wireless data networks as part of the Cellular Digital Packet Data (CDPD) technology. Multicast is also used for programming on the MBone, a system that allows users at high-bandwidth points on the Internet to receive live video and sound programming. In addition to using a specific high-bandwidth subset of the Internet, Mbone multicast also uses a protocol that allows signals to be encapsulated as TCP/IP packet when passing through parts of the Internet that can not handle the multicast protocol directly.

UNICAST

Unicast is communication between a single sender and a single receiver over a network. The term exists in contradistinction to multicast, communication between a single sender and multiple receivers, and anycast, communication between any sender and the nearest of a group of receivers in a network. An earlier term, point-to-point communication, is similar in meaning to unicast.

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