No you can not be a Zombie.
No
no way!
When you buy Revolution, the first black ops 2 map pack, it comes with a new game mode called turned, which is a gun game styled game where you play as the zombie.
Do you mean Black Ops Rezurrection upgraded WAW Zombie maps because the World at War original maps do not play on Black Ops.
you can't become a zombie once you die the game is over and you have the option to play again but again you can not become a zombie
The hardened edition lets you play on the zombie maps from WaW
Yes you can,You can play with friends or players online
You are able to play split screen zombie mode online for Black Ops.
If you get call of duty black ops there is a zombie mode and you can play it online.(There are other call of duty's with zombie modes.)
The best zombie map on black ops is the Call of the Dead but really its your personal opinion
Play zombie mode up to 4 player co op