Consider a token ring system with N stations in which a station that has just transmitted a frame releases a new token only after the station has completed transmission of its frame and the leading edge of the transmitted frame has returned (after a comlete circulation of the ring) to the station.

a. Show that utilization can be approximated by 1/(1+a/N) for a<1 and by 1(a+an) for a> 1

b. What is the asymptotic value of utilization as N increases