Qualcomm Software Engineer Intern interview questions

Had 3 technical 35-45 mins phone interviews for Software Engineering Position at QCT. 1st Interview : Asked everything mentioned on the resume. About each and every word. So I walked him through my resume answering all his questions. Technical Questions asked : 1) Difference between Array and Linked List ? 2) If i have a phone book to implement, which of the two would you use ? and Why ? 3) In layman's term, explain CDMA and GSM and their differences. 4) What is buffer overflow ? 5) Asked everything about the projects that I had mentioned. Later I was asked behavioral questions. 2nd Interview : Technical Questions asked : 1) Explain final, static keywords. 2) Outputs of exception handling situations. Eg. Will Finally block be executed if catch block is not written ? When will system exit ? etc 3) What is StringBuffer and StringBuilder ? 4) What is singleton class ? 5) Does Multiple inheritance exist in both, C++ and Java? 6) Difference between C and Java. 7) Difference between Array and LinkedList 8) Asked a few questions on projects. 3rd Interview : Technical Questions asked : 1) Difference between C and Java. 2) Explain Method Overloading 3) Explain CDMA and LTE Questions to test logical reasoning : 1) How many Gas stations are there in the whole of USA ? ( Please do not come up with any arbitrary number. They do not want that ! ) 2) How would you test for Salt Cellar ? What all parameters would you consider for testing ?