Q1: A receiving host has failed to receive all of the segments that it should acknowledge. What can the host do to improve the reliability of this communication session?

A Restart the virtual circuit.

B Decrease the window size.

C Decrease the sequence number.

D Send a different source port number.

ANS:D - Decrease the window size.

A receiving host can control the transmitter by using flow control (TCP uses Windowing by default). By decreasing the window size, the receiving host can slow down the transmitting host so the receiving host does not overflow its buffers.

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