Australia and NZ: Government standard is 10 grams of alcohol per drink, but studies report a range of alcohol contents per drink from 6 to 11 grams. Japan: Studies report a range of alcohol contents per drink from 21.2 to 28 grams.
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IGMP snooping allows a switch to only forward multicast traffic to the links that have solicited them. Essentially, IGMP snooping is a layer 2 optimization for the layer 3 IGMP. IGMP snooping takes place internally on switches and is not a protocol feature.GMP querier [edit]. In order for IGMP, and thus IGMP snooping, to function, a multicast router must exist on the network and generate IGMP queries. The tables created for snooping (holding the member ports for each a multicast group) are associated with the querier.