It's not a problem. I heard it can be a problem with MS tests sometimes if you don't use the same company.
The problem that can occur with MS exams is that you can end up with two seperate profiles at MS. When you sign up for an exam with the other test provider, make sure they know that you have already taken some MS exams and they get all the information they need.
I avoided the issue, but I have seen others post that it can be a pain to get resolved.
No. A+ and Net+ are mutually exclusive of each other. Unlike MS exams which you need 4 exams for an MCSA or 7 exams for MCSE.
I think the lads are saying that yes it will be a pain for you if you use 2 dif companies for MS exams, but it won't matter if you use 2 companies for the A+ and Network+ exams.
I am actually about to book my first MS exam. Is there any difference between Vue and Prometric?