Figure shows a Stop-and-Wait Protocol and how a mechanism of adding sequence numbers and acknowledgement numbers can prevent frame duplication at the Receiving Node. If the round trip time for a frame is 50 milliseconds, explain what will happen if we set the time-out in each of the following cases. a. 45 milliseconds b. 50 milliseconds c. 55 milliseconds

Sendihg hode Receiving node Network Data-link Data-link Legend : Packet Frame 0 Start the timer Packet ) Stop the timer Packet Frame 1 Restart a time-out timer Lost Notes: A lost frame means either lost or corrupted A lost ACK means either lost or corrupted. Frame 1 (resent) Packet ' Packet Frame 0 :Packet ACK I Lost Frame 0 is discarded because the receiver expects frame 1 Frame 0 (resent ACK 1 Time Time Time Time