Exercise 3 - Part 4

After connection establishment, in the following sections, A sends a certain number of segments to B. Represent the sequence diagram with the same fields requested in the previous section. Suppose that, upon confirming the correct reception of sequential segments, B allows A's window to expand to its original size.

For the following sections, suppose we start from an already established TCP connection and that entity A begins with an initial sequence number equal to 1000 and entity B with a sequence number equal to 2000.

Represent the temporal sequence diagram if A sends 3 segments of maximum size, where the first one is lost. Consider that the retransmission timer has a value of 6 'ticks' and that B does not discard out-of-order segments, so A only retransmits the segment associated with the timer when it expires. In this section, suppose that B's receive window expands to a size of 4000 octets.