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Generate AI-powered Cognizant interview questions for all 3 rounds. Process: GenC Online Test → Technical → HR. Optimised for campus placements and fresher hiring.
From our curated bank of 10 Cognizant-specific questions. The generator produces fresh AI-tailored questions each run.
What is the difference between Cognizant GenC and GenC Elevate tracks?
Tip: GenC (₹4 LPA): standard programmer analyst role, assessed via basic aptitude + coding. GenC Elevate (₹5.5–6 LPA): advanced coding test, requires DSA proficiency. GenC Next (₹8+ LPA): competitive programming level for top coders.
What is a pointer in C? Explain pointer arithmetic with an example.
Tip: Pointer: variable storing a memory address. Arithmetic: incrementing a pointer by 1 moves it by sizeof(type) bytes — int* moves 4 bytes. Common Cognizant question: difference between ptr++ and (*ptr)++.
What are joins in SQL? Explain INNER, LEFT, RIGHT, and FULL OUTER joins.
Tip: INNER: only matching rows from both tables. LEFT: all rows from left + matched from right. RIGHT: opposite. FULL OUTER: all rows from both, NULL where no match. Draw a Venn diagram — Cognizant SQL questions often include multi-join scenarios.
Explain the concept of virtual functions and vtables in C++.
Tip: Virtual function: declared with `virtual` keyword, resolved at runtime via vtable (array of function pointers). Pure virtual (`= 0`) makes the class abstract. Use when you need runtime polymorphism across derived classes.
Write a SQL query to find the second highest salary from an Employees table.
Tip: Two approaches: (1) SELECT MAX(salary) WHERE salary < (SELECT MAX(salary)) — simple but fragile. (2) SELECT salary FROM (SELECT salary, DENSE_RANK() OVER (ORDER BY salary DESC) AS rk) WHERE rk = 2 — handles ties correctly.
Practise questions for each stage to maximise your preparation.
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