They expect you to wear business casual look up (tech business attire). Some slacks and a polo is fine. They had me take a basic math (algebra) and English reading/writing aptitude.

I applied online and within a week I was contacted by phone for the initial interview, I was eight months pregnant and showing. I was given the initial math tests and verbal tests which were very easy SAT type Questions. The interviewer looked clearly uncomfortable with my situation--I was not called back.