Cognizant interview questions

Passed the assessment but HR only asked a few questions then sent rejection message. 1. Educational BG 2. Residency 3. Amenable to work in office 4. How many years in BPO and how many companies

Data Structures & Algorithms (DSA): Focus heavily on Linked Lists and Arrays. Common coding problems include: Reversing a singly linked list. Merging two sorted linked lists. Sorting subarrays or finding unique elements. Differences between linear structures (lists) and hierarchical structures (trees). Object-Oriented Programming (OOPs): Be ready to explain and provide examples of Encapsulation, Inheritance, Polymorphism, and Abstraction in Java or Python. Databases: Refresh your knowledge of SQL Joins (Inner, Outer, Left, Right) and compare them with subqueries