Consider the pattern of red and black packet arrivals to a router's output port queue, shown below. Suppose each packet takes one time slot to be transmitted and can only begin transmission at the beginning of a time slot after its arrival. Indicate the sequence of departing packet numbers (at t = 1, 2, 3, 4, 5, 7, 8) under round robin scheduling, where red starts a round if there are both red and black packets ready to transmit after an empty slot. 1 2 3 45 6 7 arrivals TERRA packet in service ????? ?? ? departures 0 1 2 3 4 5 6 7 8 What are the packet numbers departed in time slots 1, 2, 3, 4, 5, 6, 7, 8? For example, the answer could be 1. 2. none. 3. 4. 5. 6. 7