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diff --git a/ex08/kn08.tex b/ex08/kn08.tex
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@@ -241,11 +241,24 @@
             \end{array}
         \end{math}
     \end{enumerate}
+    Plot: TODO
 \end{enumerate}
 \Aufgabe{Token Ring}{10+10}
 \begin{enumerate}
-	\item
-	\item
+	\item The maximum capacity is asked so we assume each line to have $20m$:\begin{align*}
+        x&=&n\cdot \left(1bit+ \frac{20m}{\frac{2}{3}\cdot 3\cdot 10^8 \frac{m}{s}}\cdot 4Mbit/s\right)\\
+        &\overset{n=10}{=}& 10bit + 10\cdot 10^{-7}\cdot 4 Mbit\\
+        &=& 10bit +4 bit\\
+        &=& 14 bit
+    \end{align*}
+	\item Assume only the token has to circulate ($3\cdot 8 bit= 24bit$):\\
+    \begin{align*}
+        &24 bit &\le& n\cdot \left(1bit+ \frac{20m}{\frac{2}{3}\cdot 3\cdot 10^8 \frac{m}{s}}\cdot 4Mbit/s\right)\\
+        \Leftrightarrow & 24 bit &\le & n\cdot 1.4 bit\\
+        \Leftrightarrow &\frac{24}{1.4} & \leq & n\\
+        \Rightarrow & 18 &\leq& n
+    \end{align*}
+    $\Rightarrow$ We need at least 18 Stations to let the whole token circulate.
 \end{enumerate}
 \Aufgabe{Ethernet}{5+5+5+5+5+5}
 \begin{enumerate}