Consider the problem of recovering from host crashes (i.e., Fig. 6-18). If the interval between writing and sending an acknowledgement, or vice versa, can be made relatively small, what are the two best sender-receiver strategies for minimizing the chance of a protocol failure?
Answer to relevant QuestionsAre deadlocks possible with the transport entity described in the text (Fig. 6-20)?Why does UDP exist? Would it not have been enough to just let user processes send raw IP packets?RTP is used to transmit CD-quality audio, which makes a pair of 16-bit samples 44,100 times/sec, one sample for each of the stereo channels, how many packets per second must RTP transmit?Suppose that the TCP congestion window is set to 18 KB and a timeout occurs. How big will the window be if the next four transmission bursts are all successful? Assume that the maximum segment size is 1 KB.In Fig. 6-40(a), we see that it takes 9 packets to complete the RPC. Are there any circumstances in which it takes exactly 10 packets?
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