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02-21-2026, 08:25 AM #1

Cognizant (CTS) is one of the top IT companies hiring engineering freshers in India in 2025. Here is the complete guide to crack the Cognizant hiring process:

COGNIZANT HIRING PROGRAMS 2025:
1. GenC (General Category) - Entry level, 4 LPA
2. GenC Elevate - Higher package, 6.5 LPA
3. GenC Pro - For exceptional coders, 9 LPA
4. GenC Spark - For top performers, 12+ LPA

COGNIZANT SELECTION PROCESS 2025:
1. Online Test (Aptitude + Coding)
2. Communication Assessment
3. Technical Interview
4. HR Interview

COGNIZANT ONLINE TEST PATTERN 2025:

For GenC:
- Reasoning Ability: 15 questions, 15 min
- Quantitative Aptitude: 15 questions, 15 min
- English Ability: 22 questions, 25 min
- Coding: 2 problems (C/C++/Java/Python), 45 min

For GenC Elevate:
- Same sections as GenC but harder difficulty
- Coding: 3 problems, 60 min
- Additional: Data Structures section

COGNIZANT TECHNICAL INTERVIEW QUESTIONS 2025:

CORE JAVA QUESTIONS:
1. What is the difference between abstract class and interface in Java?
2. Explain the concept of polymorphism with a real-world example.
3. What is the difference between HashMap and Hashtable?
4. Explain the Java memory model (Stack vs Heap).
5. What are design patterns? Explain Singleton and Factory.
6. What is JDBC? How to connect Java to a database?
7. What is Spring Framework? Explain IOC and DI.
8. What is the difference between final, finally, and finalize?
9. Explain the concept of immutable classes in Java.
10. What are functional interfaces in Java 8?

PYTHON AND SCRIPTING:
11. What is the difference between deep copy and shallow copy?
12. Explain Python's garbage collection mechanism.
13. What are Python's data structures (list, tuple, set, dict)?
14. How do you handle exceptions in Python?
15. What is a virtual environment in Python?

DATA STRUCTURES AND ALGORITHMS:
16. Write a program to find the factorial using recursion.
17. Explain quicksort algorithm and its complexity.
18. How do you find if a linked list has a cycle?
19. Write BFS and DFS traversal code.
20. What is the difference between array and linked list?

DATABASE QUESTIONS:
21. Write SQL query to get employees with salary > average salary.
22. Explain different types of SQL joins with examples.
23. What is the difference between UNION and UNION ALL?
24. Write a query to find the Nth highest salary.
25. What is a stored procedure and when do you use it?
26. Explain the difference between clustered and non-clustered index.
27. What is referential integrity?
28. How to handle NULL values in SQL?

OPERATING SYSTEM AND NETWORKING:
29. What is the difference between process and thread?
30. Explain virtual memory and page replacement algorithms.
31. What is a deadlock? How to avoid it?
32. Explain the OSI 7-layer model.
33. What is the difference between HTTP and HTTPS?
34. What is DNS and how does it work?

CLOUD AND MODERN TECH:
35. What is cloud computing? Types of cloud services (IaaS, PaaS, SaaS).
36. What is DevOps? CI/CD pipeline explained.
37. What is Docker? Difference between container and VM.
38. What is REST API? HTTP methods explained.
39. What is Agile vs Waterfall methodology?
40. What is version control? Git commands you use daily.

COGNIZANT CODING QUESTIONS (GenC Level):
1. Print Fibonacci series up to n terms
2. Find the largest element in an array
3. Reverse a string
4. Check if a number is palindrome
5. Count vowels and consonants in a string
6. Find sum of digits of a number
7. Swap two variables without a third variable
8. Print pyramid patterns
9. Find prime numbers up to n (Sieve of Eratosthenes)
10. Sort array using bubble sort

COGNIZANT CODING QUESTIONS (GenC Elevate Level):
1. Find all pairs with a given sum in an array
2. Rotate a matrix by 90 degrees
3. Implement LRU Cache
4. Find the longest common subsequence
5. Implement binary search on a rotated sorted array

COGNIZANT HR INTERVIEW QUESTIONS:
1. Why Cognizant?
2. Tell me about a project you are proud of.
3. How do you handle conflicts in a team?
4. What is your understanding of Cognizant's business model?
5. Are you open to working in different technology domains?
6. How do you manage your time during tight deadlines?
7. What does digital transformation mean to you?
8. How do you stay current with technology trends?
9. What are your 3-year goals at Cognizant?
10. How soon can you join?

TIPS TO CRACK COGNIZANT 2025:
1. Practice on Cognizant's official mock test platform
2. Focus on easy-medium coding problems for GenC
3. Revise DBMS, OS, and Java/Python basics
4. Improve your communication and English skills
5. Stay updated on Cognizant's recent projects and digital services
6. Practice explaining your projects clearly and concisely

All the best for your Cognizant interview in 2025!