Does internet connection affect online gaming?

[Tony]

your internet connection, your speed, your signal strength will all play a factor in your online play. get Broadband internet connection from your local internet provider, Dial up stinks. uhhh if you have a bad connection you may get disconnected from games or even experience serious Lag *EDIT* since you play Halo i assume you have a 360, i have a PS3 ive played MW2 online but i mainly play Bad company 2 online. i used to suffer from some lag but that was just the Servers that they fixed already. my internet wasnt the problem. i would have assumed it was your internet connection at first but if your not getting signed out or Exited from games it cant be it. im sorry i couldnt be of help hopefully somebody else will get back to you