I applied online. The process took 2 months. I interviewed at CERN in Jan 2009
Interview
I applied for technical student position. After initial submit I was contacted after 1-2 months. I got only 2 phone interviews with very friendly guy. He was curious about my skills and work experience I did during my university. The whole phone call was not longer than 30 min. The guy described me the work I should do and we checked once more the start date.
Interview questions [1]
Question 1
I didn't find it hard. Maybe I've got enough experience for this level.