It is illegal to hold more than one license at a time. Keep the one from your permanent residence unless your employer requires you to do something else.
Only if you are in the US temporarily as a visitor or as a tourist. If you are a student or a permanent-resident alien, you must apply for a US drivers license in the state of your school or residence.
No
If your drivers license is revoked in one state, can you get a drivers license in another state?
No. You can only get a California license if you're a resident of California.
None. As a resident of MS, that's the only state you can hold a licence in. Furthermore, states share information, and will not issue a drivers licence (even if you become a resident of another state) while there is still a suspension active against you.
No
No you cannot get a drivers license in Florida if you have had your license suspended in another state.
can a person temporarily drive a tractor on a highway with a driver license
It is if you are a Pennsylvania resident.
yes
Yes
No