Out of curiosity, the implementer of the transport entity of Fig. 6-20 has decided to put counters inside the sleep procedure to collect statistics about the conn array. Among these are the number of connections in each of the seven possible states, ni (i = 1, ..., 7). After writing a massive FORTRAN program to analyze the data, our implementer discovers that the relation Σni = MAX_CONN appears to always be true. Are there any other invariants involving only these seven variables?
Answer to relevant QuestionsWhat happens when the user of the transport entity given in Fig. 6-20 sends a zero-length message? Discuss the significance of your answer.A client sends a 128-byte request to a server located 100 km away over a 1-gigabit optical fiber. What is the efficiency of the line during the remote procedure call?A process on host 1 has been assigned port p, and a process on host 2 has been assigned port q. Is it possible for there to be two or more TCP connections between these two ports at the same time?A TCP machine is sending full windows of 65,535 bytes over a 1-Gbps channel that has a 10-msec one-way delay. What is the maximum throughput achievable? What is the line efficiency?For a 1-Gbps network operating over 4000 km, the delay is the limiting factor, not the bandwidth. Consider a MAN with the average source and destination 20 km apart. At what data rate does the round-trip delay due to the ...
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