6. Refer to Figure 5 (A sequence of segment exchanges) which shows a sequence of segment...

   

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6. Refer to Figure 5 (A sequence of segment exchanges) which shows a sequence of segment exchanges between Sender and Receiver hosts. As shown in the figure one of the segments is "Lost' in transit. In relation to the approach used by the TCP entities to recover from this scenario explain the following: (i) Identify the sequence numbers contained in each of the Acks labelled A, B and C. In your answer explain your rationale. (6 marks) (ii) Identify the sequence numbers contained in the segment labelled D. (3 marks) (iii) Recreate the Receiver Buffers as per labels E and F in your answer book. Each of the shaded boxes represents a stored segment. Insert any additional shaded boxes you deem necessary at the appropriate time location(s) to reveal the true status of the Receiver Buffer at these times. (6 marks) RTO Time-out Sender Time Seq: 501-600 Ack: x Seq: 601-700 Ack: x Seq: 701-800 Ack: x Seq: 801-900 Ack: x Lost Ack: A Ack: B Ack: C Receiver Time Figure 5: A sequence of segment exchanges. Receiver buffer E F 6. Refer to Figure 5 (A sequence of segment exchanges) which shows a sequence of segment exchanges between Sender and Receiver hosts. As shown in the figure one of the segments is "Lost' in transit. In relation to the approach used by the TCP entities to recover from this scenario explain the following: (i) Identify the sequence numbers contained in each of the Acks labelled A, B and C. In your answer explain your rationale. (6 marks) (ii) Identify the sequence numbers contained in the segment labelled D. (3 marks) (iii) Recreate the Receiver Buffers as per labels E and F in your answer book. Each of the shaded boxes represents a stored segment. Insert any additional shaded boxes you deem necessary at the appropriate time location(s) to reveal the true status of the Receiver Buffer at these times. (6 marks) RTO Time-out Sender Time Seq: 501-600 Ack: x Seq: 601-700 Ack: x Seq: 701-800 Ack: x Seq: 801-900 Ack: x Lost Ack: A Ack: B Ack: C Receiver Time Figure 5: A sequence of segment exchanges. Receiver buffer E F

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The provided images relate to the sequence of TCP segment exchanges between a sender and receiver and the question pertains to the understanding of the TCP protocol specifically how it recovers from l... View the full answer