Consider the following two causes of a 1-second network delay (assume ACKs return instantaneously):
¦ One intermediate router with a 1-second outbound per-packet bandwidth delay and no competing traffic
¦ One intermediate router with a 100-ms outbound per-packet bandwidth delay and with a steadily replenished (from another source) 10 packets in the queue
(a) How might a transport protocol in general distinguish between these two cases?
(b) Suppose TCP Vegas sends over the above connections, with an initial Congestion Window of 3 packets. What will happen to Congestion Window in each case? Assume Base RTT = 1 second and β is 1 packet per second.