Typically，an IP address refers to an individual host on a particular  network. IP also accommodates addresses that refer to a group of  hosts on one or more networks.Sunch addresses are referred to as multicast addresses，and the act of  sending a packet from a source  to the  members of  a（  ）group is  referred to as multicasting. Multicasting done（  ）the scope of  a single LAN segment is straightforward. IEEE 802 and other LAN protocols include provision for MAC-level multicast addresses. A packet with a multicast address is transmitted on a LAN segment.Those stations that are members of the （  ）multicast group recognize the multicast address and （  ）the packet.In this case，only a single copy of the packet is ever transmitted.This technique works because of the （  ）nature of a LAN：A transmission from any one station is received by all other stations on the LAN.