Suppose BLAST is used over a link with a 10% per-packet loss rate; losses are independent events. Fragments that do arrive are not reordered, however. Messages consist of six fragments.
(a) What is the probability, roughly, that LAST FRAG expires? Assume this happens only when the last fragment is lost.
(b) What is the probability that the last fragment arrives but something else didn't, eliciting an SRR?
(c) What is the probability that no fragment arrives?