polishing

[skm-ma-ws1314.git] / sec-dns-extensions.tex

diff --git a/sec-dns-extensions.tex b/sec-dns-extensions.tex
index f54df18..d3ec16e 100644 (file)
--- a/sec-dns-extensions.tex
+++ b/sec-dns-extensions.tex
@@ -30,7 +30,8 @@ Another feature of Multicast DNS is the reduction of traffic through
 \term{Known-Answer Suppression}. It allows a querying host to specify already
 known resources in its query when querying resources that could exist on more
 than one host (e.~g., SRV records). The hosts matching those resources then do
-not generate a response.
+not generate a response, thus reducing the messages in the network and saving
+bandwidth, which is usually a scarce resource in wireless networks.
 
 Finally, hosts may also send unsolicited responses. This can be used to notify
 the network of new services available on a host.
@@ -47,11 +48,11 @@ process of browsing for all XMPP clients in the domain \code{example.org}.
 This is a two-step process, consisting of \term{Service Instance Enumeration}
 and \term{Service Instance Resolution}.
 
+\todo{XMPP is a probably not the best example here, use IPP instead}
 \begin{figure}[top]
   \centering
   \includegraphics[width=0.9\textwidth]{fig-dnssd-mock.jpg}
-  \caption{DNS-SD: Service Instance Enumeration and Resolution
-    \todo[XMPP is a probably not the best example here, use IPP instead]}
+  \caption{DNS-SD: Service Instance Enumeration and Resolution}
   \label{fig:dnssd}
 \end{figure}