Foods for pre diabetes

I've heard the statistics on pre-diabetes, and got some questions. Does it really work if someone take care of foods and exercise and will not have diabetes in future?

Are the foods for diabetes the same as for diabetes: those someone should avoid when diabetic are the same with pre-diabetic? Can a pre-diabetic use some restricted foods or all the foods?

Let's say In case someone like snacks, when pre-diabetic should stop eating them or what? If someone has high cholesterol too: do the foods for pre-diabetes help reduce high cholesterol too?