Yes, Carouge, Champel, Perly are very common.

The examiner doesn't normally ask questions about the car. He will ask you to go left right or tell you to follow a certain direction and you should be able to follow the signs. 

My advise is to go to the office des automobiles and practice the different exists so you know the roads and signs. Be very careful with "priority to the right", pedestrian crossings and looking over your shoulders. You have to do RTI (rétroviseur-tête-indicateur) before changing directions in that order. Make a complete stop at stop signs, they really hate the rolling stops. 

Good luck and if you have more questions do ask!

Thanks Maurizio - quote helpful post out there even though 5 years old. I got my licence exchange test in couple of days and now I am getting a bit stressed about it. 

I hope you passed. Do you have any feedback on your experience or tips for future drivers? Did you present yourself independantly for the practical test? or did you use a driving school car with an introduction by your driving instructor? Some say this makes a difference.

TCS in Meyrin is very good for driving lessons  and also they have instructors in English.