One reason, i would not recommend cardio with bulking is. the human orgainsm is a very adaptive animal, meaning once we get used to a cetain stimulus, it does not work as well as it did in the beginning. When you do cardio, your body goes through a process called capillarisation (spelling). Basically your body makes more pathways for blood to flow through, this is why cardio gets easier, the more you do it. Thus to see similar results, you now have to increase either the intensity, duration or both. All of these choices, can have a negative impact on your muscle mass.
A perfect example of this is a spin instructor who works at my gym. He teaches 30 classes per week, and is a fat ass. He can not lose the weight no matter how much cardio he does. And if he does start to lose fat, he begins to lose a ton of muscle as well.
Advaik
To answer your last question, a bulking cycle is where you attempt to strictly put on size (ie take in more calories then you expend.) A cutting cycle is where to attempt strictly to lose bodyfat (take in less calories then you expend.)