How do you get exp in BFBC2 ?

I dont really understand how bad company 2 multiplayer works.How do you gain exp, and how do you rank up?How do you get exp in BFBC2 ?
By killing your enemies.



each death gives you points. Say 50pts base. If it's a headshot, that's 10pts more. If it was a sniper one shot, I think that's another 10ts.



At most I got 400pts once for killing a BMP tank with 4 people with one c4 boom.



with the M95 sniper rifle, I got 380 points for a head shot kill on a chopper pilot that ended up crashing and killing 2 others...





so in any given round of play, you will get points based on actions...that contributes to your xp pts which will level you up.How do you get exp in BFBC2 ?
kill people!!!!!!!How do you get exp in BFBC2 ?
well, its the same as any other ranked fps, eg mw2, MAG,



you kill people, and you get xp,



you unlock guns with xp, you level up with xp in BFBC2