examples.tex

\section{Example Formats}

\prob{4}
Fill in the corresponding bubbles below to indicate which guarantees each of
the
transport protocols provides. {\bf Fill in all that apply.}

\begin{center}
    \begin{tabular}{lcc}
        Guarantee & TCP & UDP \\ \hline
        Reliable delivery &  \correctanswercircle{} & \answercircle{} \\ 
        In-order delivery &  \correctanswercircle{} & \answercircle{} \\ 
        Process demultiplexing & \correctanswercircle{} &
        \correctanswercircle{} \\ 
        Congestion Control &  \correctanswercircle{} & \answercircle{} \\ 
    \end{tabular}
\end{center}
\eprob

\prob{4}
What is the initial average throughput of the TCP connection, based only
on the portion of the trace shown above? Give your answer in megabits per
second; {\bf an approximate answer is fine, since the calculation is not
round}. 
%(Feel free to show your work as a fraction outside of the answer
%box for potential partial credit.)

\begin{center}
    % $\frac{11587/0.07} \cdot 8$ = 
    \shortanswerbox{1}{$\approx 1.3$} Mbps.
\end{center}
\eprob

\prob{4}
Given the TCP segments transmitted and the corresponding
acknowledgments, were any TCP segments lost?

\hspace*{3in} \yesnono

How can you tell? \\
\answerbox{1}{Because all bytes were acknowledged. The sender appears to
be acknowledging every second packet, but two packet's worth of bytes
for each acknowledgment.}
\eprob