OOP Concepts: Inheritance, Polymorphism, Encapsulation, Abstraction. 2 Memory: Pointers, References, Smart Pointers (unique_ptr, shared_ptr). 3 STL: vector, map, set, queue, stack. 4 Copy Constructor, Operator Overloading, Virtual Functions. 5 RAII concept & Exception Handling. 6 Common Qs: Reverse string, LRU cache, duplicate.

The Infosys interview process is typically: Online Assessment – Aptitude, logical reasoning, verbal ability, and sometimes coding questions. Technical Interview – Questions on programming, data structures, databases, OOP, and project details. HR Interview – General questions on background, strengths/weaknesses, relocation, salary, and behavioral fit.