3) Packet Scheduling Consider the following input packet sequence/timing at an output-buffered switch link (all packets arrive at the beginning of their respective timeslots): Arrival Timeslot 10.1 (GPS, VC ) 2 slots (WRR ) 20.2 (GPS, VC) 2 slots (WRR) 3-0.2 (GPS, VC ) 1 slot (WRR) 40.3 (GPS, VC) 2 slot (WRR) 10 9 8 P2 P. 7 P 6 5 4 P1 P24 2 1 0 P2 P1 P P4 P P1 Buffer 1 Buffer 2 Buffer 3 Buffer 4 Packet Transmission Times 2 slots 1 slot il A. For generalized processor sharing (GPS), which packet departs first and at what time? B. For generalized processor sharing (GPS), when does the first packet in Buffer 1 (P21) depart? C. List output transmission sequence for priority scheduler Buffer 4321 (i.e., Buffer 4 has highest priority, Buffer 1 has lowest priority, non-pre-emptive transmissions). How long does it take to send all packets? D. List output transmission sequence for non-work-conserving weighted round robin (WRR) scheduler with 7 slot frame size (with allocations shown in diagram and no partial packet transmissions in a frame, i.e., all or nothing). How long does it take to send all packets? E. List output transmission sequence for virtual clock (VC) scheduler (weights shown in iagram). Use VC equation Fjk+1= Fjk + p_Lkjj, where Fjk is timestamp of k-th packet in queue j, Ljk is length, and p, is the weight of queue j. How long does it take to send all packets?