Does with the Shread hosting, bandwidth measured in megabits or gigabyte.

Bandwidth consumption over the last several years has shifted from a per megabit usage model to a per gigabyte usage model.
As the shared hosting model developed, the trend towards gigabyte or total bytes transferred, replaced the megabit line speed model so dedicated server providers started offering per gigabyte.

Bandwidth was traditionally measured in line speed access that included the ability to purchase needed megabits at a given monthly cost.