Andrew S. Tanenbaum Edition 5th Exercise 3 Question 30 (Page No. 253)

Question

Consider the operation of protocol 6 ( Selective repeat Protocol) over a 1-Mbps perfect (i.e., error-free) line. The maximum frame size is 1000 bits. New packets are generated 1 second apart. The timeout interval is 10 msec. If the special acknowledgement timer were eliminated, unnecessary timeouts would occur. How many times would the average message be transmitted?

Answer 1

in the above question, distance is not mentioned between two sources so we can't predict the retransmission of packets

next packet transmission time i.e 1 sec

doesn't  help us to find delay of propagation of packets