Security

Personally it looks like Homework to me so you are most likely correct a 300,000,00,000 word essay.

Col

The best thing is Col, If you google that very question, it's been posted on at least one other site by someone with the same name.
I'm all for people asking questions and often do so myself when things are outside my knowledge. I'm an average IT bod with no IT qualifications but frequently come across people in the industry with degrees and industry accreditations who don't understand the basics of an operating system, what a firewall is, how to adjust folder permissions and, what Group policy is and can do and of course the biggest - UAC.
The corporate IT environment should work. First time, every time. It doesn't always and many of us here will have broken it innocently from time to time (usually fixing something else), but I really do feel that by answering some of the questions posted on here we're just helping people who don't want to research the answer, can't be bothered to learn things for themselves and will be quite happy going into an environment and breaking things for the rest of us to try and clean up. </2p>