2. Suppose a router has three input flows and one output. It receives the packets listed in the following table all at about the same time, in the order listed, during a period in which the output port is busy but all queues are otherwise empty. Give the order in which the packets are transmitted, assuming (a) Fair queuing (b) Weighted fair queuing, with flow 2 having weight 2, and the other two with weight 1.

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