Does WHM have the ability to limit bandwidth to hosting, reseller, and hosting resold accounts that do not have their own IP?

How is this done?

Yes it has.

But you must know that it tests to see if someone has gone over his limits once every 24 hours so someone may go over his limit between these intervals.

Something else is that it is not very accurate.

For IP based accounts there is another tool which seems to be more accurate.

Mac

what tool is that?

It is Bandmin.

Mac