Depending on the type of plan you have, certain things on your account are indeed unlimited.
For example, shared accounts give unlimited disk space and bandwidth.
When companies say unlimited, what they mean is that they do not meter or limit you on that item.
But just because you can have an unlimited amount of something does not mean it is physically possible to consume an
Unlimited does not mean infinite.In shared hosting even if unlimited plan is there , some Resouce usage restrictions
are still there
because in shard hosting only 25% of cpu is provided .
For example, when you go to an all-you-can-eat buffet, you can eat an unlimited amount of food.
However, it is impossible for you to eat an infinite amount of food because of the size of your stomach, the number of
hours the restaurant is open,
how much food is physically available, and the fact that you cannot share your food or take it home with you.
Certain rules for the buffet are put in place so one person does not come in and take all the food from all the other
Similarly, it is not possible to use an infinite amount of the server since there are other limits in place,
like how much CPU you can use at one time, how many processes you can have open at one time, how many emails you can send
out in an hour, etc.
Certain rules are in place to make sure one person does not use the entire server on a shared account, preventing
other customers from using the server.