If you compile them to DVI you'll get the same DVI file.
Compiled to PDF you might get very slight differences.
Compiled to PDF you might get very slight differences.
Which is used by approximately no one. Good luck uploading your resume in DVI.
Again, not my experience at all.
I think if a company didn't accept my PDF CV and asked for a Word file instead, I'd strongly reconsider whether I'm actually interested in working there.