1. For C++ object how not to allocate a memory from heap? Using new to create object not static or global 2. What is Deleted copy constructor (How to disable copying of object to other object)? 3. What are the design patterns you used? 4. What are the IPC mechanisms used? 5. What are the blocking system calls in socket programming? 6. What is select and poll system calls and difference between them. 7. What is thread safe functions. 8. How to measure the timing between starting and ending time of a execution of piece of code/function? 9. About Linux file management system. 10. What are multimaps in C++ 11. Remove duplicates in n vector of strings, Time complexity should be less than O(n). 12. What are Design patterns in C++? Which you used? 13. How to handle the threads which are reading and writing to same file. 1. Ex :- lest assume 4threads, 3threads are reading and 1 is writing to same file how to handle using synchronization so that only write thread should handle lock. the remaining thread should not lock/block the file.

Activities lifecycle in depth along how the activities will work on different scenarios.