In the interview i have been asked questions entirely on RASPBERRY PI...like tell me everything that you know about raspberry pi...and applications and also how can use this raspberry pi in airports and if a retailer like walmart comes and ask u to use raspberrypi in his store how can u use it....furtherly it was like they are testing our observation skills.Mainly we need to observe each and every thing in the company like on doors,walls,things in rooms everything..it will help u a lot in the interview...just we need to raise valuable questions to them....