TCP Congestion Control Consider the following plot of TCP window size as a

Tcp congestion control consider the following plot of

This preview shows page 3 out of 3 pages.

5. (26 points) TCP Congestion Control.Consider the following plot of TCP window size as a function of time. Assuming TCP Reno is the protocol experiencing the behavior shown above, answer the following questions. In all cases, you should provide a short discussion justifying your answer. (a)(3 pt.) Identify the intervals of time when TCP slow start is operating. (b)(3 pt.) Identify the intervals of time when TCP congestion avoidance is operating. (c)(3 pt.) After the 16thtransmission round, is segment loss detected by a triple duplicate ACK or by a timeout? (d)(3 pt.) After the 22ndtransmission round, is segment loss detected by a triple duplicate ACK or by a timeout? (e)(2 pt.) What is the initial value of Threshold at the first transmission round? (f)(3 pt.) What is the value of Threshold at the 18thtransmission round? (g)(3 pt.) What is the value of Threshold at the 24thtransmission round? (h)(3 pt.) During what transmission round is the 70thsegment sent? (i)(3 pt.) Assuming a packet loss is detected after 26thround by the receipt of a triple duplicate ACK, what will be the values of the congestion-window size and of Threshold? 024681012141618202224262830323436384042444602468101214161820222426Transmission roundCongestion window size (segments)
Image of page 3

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture