Consider the state transition diagram for Stop-and-Wait

16. Consider the state transition diagram for Stop-and-Wait ARQ in Figure 5.11. Let Pf be the probability of frame

error in going from station A to station B and let Pa be probability of ACK error in going from B to A. Suppose

that information frames are two units long, ACK frames are one unit long, and propagation and processing delays

are negligible. What is the average time that it takes to go from state (0,0) to state (0,1)? What is the average time

that it then takes to go from state (0,1) to state (1,1)? What is the throughput of the system in information

frames/second?