13. The following figures plot the timeline for sending TCP segments by host A and TCP ACKs by host B, where “seq #” is the value of the sequence number in the TCP header, and "ACK #" is the value of the acknowledge number in the TCP header. Assume that every segment always includes 500 bytes of data, excluding the TCP header. A seq #: 1008 seg #: 1500 B A seq #: 1008 seq #: 1500 B
This scenario involves the exchange of TCP (Transmission Control Protocol) segments and ACKs (Acknowledgments) between two hosts, Host A and Host B, over a network. TCP is a fundamental protocol used for reliable data transmission in computer networks. TCP segments carry data between hosts and are accompanied by ACKs to confirm the successful receipt of data.
In this discussion, we analyze two specific figures illustrating the sequence of events between Host A and Host B:
Figure (1): This figure depicts a situation where an ACK sent by Host B goes missing in the network. We need to determine the acknowledgment numbers corresponding to various segments and assess whether Host A perceives the loss of a specific segment.
Figure (2): In this scenario, a TCP segment from Host A to Host B experiences a delay in the network but eventually reaches its destination. We aim to establish the appropriate acknowledgment numbers for this situation.
Understanding these scenarios is crucial for grasping the behavior of TCP in real-world network environments, including how acknowledgment numbers are managed, how missing ACKs impact data transmission, and how delayed segments are handled by TCP.
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