Qualcomm Embedded Engineer interview questions

1. What does “real time” system mean? 2. Have you any experience to implement the real time system and what did you do if the system can’t finish the task in real time? 3. How comfortable do you use c++? 4. What does the constant mean? 5. What does the static mean? 6. What does the volatile mean? 7. What does the switch and case mean? 8. Can you tell me the disadvantage of if else compare to switch case? 9. Do you know any bitwise operator?