The main way to prevent your self being booted off is bandwidth
People used to try booting mysef and team mates off on black ops2 all the time
my friends would get booted in order of theyr internet connection
and i would be the only person left in the game on my side
I have 80mbit down 20mbit up and it takes around 300mbit of bandwidth to boot me off for a short period
most of these kiddies dont have a booter capable of that
i have only been booted once in the last two years
where as my team mates have been booted a good few hundred times