If you're taking a generic tech role at a generic hosting company, there really is no reasonable noncompete. Your employer isn't arming you with any secret sauce that will make it easier for you to compete with them, because no such sauce exists.
That said: a "reasonable" noncompete:
(a) Is limited in scope to actual customers of the hosting company
(b) Is limited to the precise role you perform for the company
(c) Includes consideration, such as some form of severance
In many jurisdictions, noncompetes are implicitly and severely limited in duration. In California, of course, they can't be enforced (as part of an employment contract) at all.