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5. Why does TCP need three-way handshake, instead otwo-way, in connection setup?

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6. When is a lost TCP segment retransmitted?

7. What actors are considered in deciding the TCPwindow size?

8. How does the window grow in slow start and conges-tion avoidance?

9. Why are ast retransmit and ast recovery added toTCP? What major change does New Reno make?

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