1. Packets (if any) arrive at the beginning of the slot. Thus inthe figure, packets 1, 2, and 3 arrive in slot 0. If there arealready packets in the queue, then the arriving packets join theend of the queue. Packets proceed towards the front of the queue ina FIFO manner. 
2. Consider the figure below, which shows a leaky bucket policer being fed by a stream of packets. The token buffer can hold at
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