Error Detection and Receiver Feedback in Transport Layer
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Questions and Answers

What is the average TCP throughput given that thruput is $\frac{3}{4}W$ per RTT?

  • $\frac{3W}{2}$ bytes/sec
  • $2W$ bytes/sec
  • $\frac{4W}{3}$ bytes/sec
  • $\frac{3W}{4}$ bytes/sec (correct)

    • To achieve 10 Gbps throughput with 1500 byte segments and 100ms RTT, how many in-flight segments are required?

  • 100
  • 83,333 (correct)
  • 10
  • 1500

    • In the context of TCP Fairness, what is the fairness goal for multiple TCP sessions sharing the same bottleneck link?

  • Each session should have an average rate of $K$
  • Each session should have an average rate of $\frac{R}{K}$ (correct)
  • Each session should have an average rate of $R - K$
  • Each session should have an average rate of $R$

    • How is fairness maintained in TCP when two competing sessions are sharing a bottleneck link?

    <p>Through additive increase and multiplicative decrease mechanisms</p> Signup and view all the answers

    In the context of fairness and UDP, why do multimedia apps often not use TCP?

    <p>To avoid congestion control mechanisms</p> Signup and view all the answers

    What are the principles behind transport layer services as summarized in Chapter 3?

    <p>Multiplexing, demultiplexing, reliable data transfer, flow control, and congestion control</p> Signup and view all the answers

    What does TCP use for congestion avoidance when there is a loss in throughput?

    <p>Additive increase</p> Signup and view all the answers

    Why might multimedia applications opt for UDP instead of TCP?

    <p>To avoid rate throttling by congestion control mechanisms</p> Signup and view all the answers

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