Intel On- campus interview

I had my interview scheduled this april, following questions were asked in my Intel interview: 1. difference between mutex and semaphore? 2. What is critical section problem? 3. find the second smallest...

I had my interview scheduled this april, following questions were asked in my Intel interview:
1. difference between mutex and semaphore?
2. What is critical section problem?
3. find the second smallest element from the last.
4. bit wise shifting
5. heap and stack
6. memory leak
7. LRU cache
8. Synamic array declaration
9. static keyword
10. static and dynamic difference
11. Print number from t to N without using loops
12. how to find whether a given number is odd or even (bit wise manipulation concept).