    Sentence 1: In cases with shared medium how is it  delivered         Senterice 2: Packets are normally forwarded by  intermediate network nodes asynchronously using  first-in, first-out. buffering, but may be forwarded  according to, sore scheduling discipline. for, fair  queuing, traffig, shaping, or for differentiated or  guaranteed quality of service, such as weighted fair  queuing or leaky bucket.