Those answers are so lame, N00Bs. First of all Netsupport runs in the background as a required processing thread. If you try to take the network cable on and off like, or use the sleep button, you might as well use the fireax outside in the hallway to kill the process thread in your computer. The DOS CLI should be deabled by the admin at configuration time. That can get you passed a couple of things but not to the point of owning the network or just your own computer. I have had the screen flippers and other such exploits which lead to the downfall of the student that tries to outsmart the network admin.