The timer of a system using stop-and-wait ARQ protocol has a time-out of 5 milliseconds. The transmission time for each frame or acknowledgment is 1 millisecond, and the one-way propagation delay from sender to receiver is 1 millisecond.a) Draw a timing diagram to show three frame exchanges, assuming that no frame is lost.b) If the frame size is 1000 bits, what is the throughput of this system if no error happens?Hint: Calculate how many frames you can send per second, and then convert it to bit