online test involves 3 section, 1. apptitude: 20 question 20 min. average level, but need to be fast, try max attem.
2. programming basis: 20 question 25 min, average level, mainly focus on c, pointer, array, scope resolution operator(max=a>b?a;b).
3. Electronics/computer science: 20 question 30 min. I choose elec. 40% digital q, 30% analogue and rest device technology.
It is followed by 2 or 3 round of interview. (2 or technical and 1 hr round).
Had very nice experience of interaction with peoples at Qualcomm...