NetSim is a wonderful product, and you can certainly get a lot of good hands-on experience using the NetSim product that is included with the book. However, like any simulator product, it does not mimic a network with 100% accuracy. Some situations are difficult to simulate. For instance, it is very challenging to simulate the output of debug commands, because the simulator is not actually running IOS. If you intend to use NetSim, please download the latest list of hints, tips, and caveats from www.ciscopress.com/1587200945.
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