They ask the same questions they’d ask if you were in a cafe. Advice for you: try to be in a room w/o surrounding noise (kid brother’s music, barking dog, traffic/sirens outside the window). Make sure there’s enough LIGHT on you. See what your camera view looks like. If you’re using a laptop, tablet or smartphone, make sure you have enough charge! I had a student whose smart phone died on her in the middle of our Facetime interview. She and I had to reconnect through Skype halfway through!