diff --git a/ex11/kn11.pdf b/ex11/kn11.pdf
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+++ b/ex11/kn11.pdf
Binary files differ
diff --git a/ex11/kn11.tex b/ex11/kn11.tex
index 64c1cf0..edee1c4 100644
--- a/ex11/kn11.tex
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@@ -102,9 +102,9 @@
 \end{enumerate}
 \Aufgabe{Mobile Communication - Frequency Assignment}{10+10+20}
 \begin{enumerate}
-  \item Frequency planning is required to optimally exploit the available frequency spectrum. 
+  \item TODO
   \item Microcells are used to add network capacity in areas with very dense phone usage, e.g. train stations, hotels, city centers etc. Sometimes they are deployed temporarily during large events when extra capacity is known to be needed at a specific location in advance. Advantages: system capacity increases, less power is used by mobiles and base stations. Disadvantages: Due to the small covered area of a single cell, handovers are more common. The risk of handoffs increases.
-  \item bla
+  \item TODO
 \end{enumerate}
 \Aufgabe{2nd Generation Cellular Mobile Radio}{5+5}
 \begin{enumerate}