Yes.
NO
yes
No. You lose all of your experience, cod points, guns, perks, equipment, and grenade types. The only thing you keep is your playercard.
Yes but not player card stuff
When you die in Zombies, you do not keep your perks.
If you go prestige you will lose all your wepons, but gain another class every other prestige.
prestige is another type of way to level up in black ops. once you get level 50 in blacks ops you can start your prestige. when you start your prestige you start back at level 1 with no guns and no perks. but you get the honor to be called prestige 1. once you get to level 50 again you can start again back at level 1 with prestige 2. and you can keep going until prestige 15. once prestige 15 there is nothing more you can do.
You can prestige in Black Ops multiplayer if that's what you mean.
Yes and No. Yes if you get downed and dont get revived and no if you get downed and get revived.
15th prestige
Perks are Things that Help You on Your Game
yes