Assume that 20 packets in a row are received and none of them are dropped. What is the drop probability of the next packet that is received? Drop-tail is simply the scheme where arriving packets are dropped if there is no space left in the queue. Note that drop-tail is simple, and RED is more complex. Why then do we prefer RED over drop-tial? Give two specific advantages of RED over drop-tail (be brief and to the point). i. First advantage: