Homework 2 - Solution -in class problem

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Drexel University *

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ECEC-690

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Computer Science

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Feb 20, 2024

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docx

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ECEC 432 – Homework 2/Quiz 2 – In class problem 1. TCP Reno : Consider a TCP Reno transmission that has exactly 15 segments to transmit. Assume ssthresh is 8 when the connection is setup. During the transmission, the following two packets are lost: the 4 th and 12 th ; no other losses occur. The transmission ends once the 15 th packet is received successfully. Which packets are sent in the following next rounds, if any. Justify your answer. Round 1 -> cwnd = 1 Packets: 1, justify. Beginning of SS. Round 2 -> cwnd = 2 Packets: 2,3, justify: window is doubled (SS). Round 3 –> cwnd = _4_ packets: 4,5,6,7 , justify: window is doubled (SS) Round 4–> cwnd = _5_ packets: _4,8,9,10,11_ , justify: FR, ssthresh=2, window=5 Round 5–> cwnd = __6__ packets: _12,13,14,15_ , justify: CA, window=6 Round 6–> cwnd = _6___ packets: __12__ , justify: FR, ssthresh=3, window=6
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