Async plugin execution order

Hi All:

I have a plugin registered for the create/update/delete of some entities. And these steps are in Asynch mode.

Now, let's take lead as an example:

If I create a lead, then update it, then delete it. Here comes my question:

1)Is the order of system job guaranteed? Say, it will be created, update and then delete in system job?

2)Is the execution order guaranteed? Say, it execute in a way that update will execute after created, and delete will execute after update?

3)Is the finish time guaranteed? Say, create will finish first and delete finish last?

Thanks.