Ques asked in L & TCalculating structure memory size w/o size of operatorStructure can be used instead of class?If structure can be used why to use classWhy to use Private constructor. Where private constructor is used.If a class contains private constructor and class is inherited will the object be createdHow the data is passed using message queue.. Data queue.. shared files pipes or socketsAdapter Design PatternVirtual TableWhats the use of abstraction, polymorphismName manglingdiff between copy constructor n overloaded assignment operatorwhat is memory corruption, memory leak, segmentation fault?Multithreading. Diff between Semaphore and Mutex.When to use mutex and when semaphore?Casting Operators in C++STLGeneral Questionsdomain c++??OS?? Linux/QNX 1) 8 Properties of OOPs2) Virtual Polymorphism3) Copy Constructor4) Shalow copy and deep copy5) dangling pointer6) vtable headstart c++7) link list , double link list circular link list8) Preprocessor directive or inline . which is best9) function over riding and function overloading difference10) data hiding in c11) pointers =to function advantage disadvantage12) CAN YOU STORE OBJECT TO FILE?? how13) Multithreading - concurrent server?? this in terms of sockets14) Blocking and Non Blocking socket15) difference between POSIX Queue and System V Queue16) IPC Communication- shared , semaphore, Queue17) if you have Quad core processer how can you utilise all core with single application18) Templates & containers19) MAPS and Vectors & list - location of memory , memory structures, memory access20) volatile data types and constant data ttpes