Qualcomm interview questions

Based on DSA, no intro

basic C questions, and they have very standard it seems delete linked list, add an element to bst, semaphore vs mutex etc., sometimes some domain specific or some protocol related. once I had 3 hr round with one of the team and I almost aced it but after I didn't hear anything. I felt interviewers are in much hurry and conclude just like that, sometimes I encountered narrow minded people.