TCS Interview Questions for Freshers 2026: Full Prep Guide

TCS follows a standardized hiring process:

1. TCS NQT (National Qualifier Test): Online aptitude + coding test
2. Technical Interview: CS fundamentals, project discussion
3. Managerial Round: Behavioral + situational questions
4. HR Round: Offer discussion, joining expectations

The NQT is the main filter: about 60% of candidates are eliminated here.

The NQT has three sections:

• Verbal Ability: Reading comprehension, grammar, vocabulary (20 min)
• Reasoning Ability: Logical puzzles, pattern recognition (40 min)
• Numerical Ability: Quantitative aptitude, data interpretation (40 min)
• Coding: 1-2 programming problems in C/C++/Java/Python (30 min)

Tip: The coding section has the highest weightage for your score band (Digital, Prime, Ninja). Practice at least 50 coding problems of easy-medium difficulty.

1. What is OOP? Explain the four pillars.
2. Difference between abstract class and interface
3. What is normalization in DBMS? Explain 1NF, 2NF, 3NF
4. Explain the OSI model layers
5. What is a deadlock? How do you prevent it?
6. Explain the difference between stack and heap memory
7. What is a linked list? Types of linked lists?
8. Explain TCP vs UDP
9. What is a foreign key in SQL?
10. Write a program to reverse a string
11. Explain the software development lifecycle (SDLC)
12. What is agile methodology?
13. Difference between compiler and interpreter
14. What is polymorphism? Give an example.
15. Explain cloud computing and its types
16. What is DNS? How does it work?
17. Explain multithreading vs multiprocessing
18. What is a binary search tree?
19. Explain the MVC architecture
20. What is REST API?

For each, prepare a 1-2 minute explanation with a real-world example.

The TCS HR round follows a predictable script, and the trap isn't the questions: it's the hesitation candidates show on the ones that feel uncomfortable. Relocation, night shifts, the two-year bond: these aren't negotiable at the stage you're at, and an interviewer who hears "I'll try" instead of "yes" will note it.

The questions themselves cover the basics: tell me about yourself (keep it under ninety seconds and end on why TCS), why TCS over others (be specific: mention a business unit, a recent initiative, or a technology practice area that matches your background), expected salary (quote the standard fresher band, which is ₹3.36 LPA for the base package; don't improvise), and where you see yourself in five years (frame it around skill depth, not a job title).

The bond question trips up candidates who haven't thought through their answer. TCS's two-year service agreement is standard for the fresher batch. The right answer is a direct yes, with no qualifiers: HR interviewers have heard every version of "it depends" and it reads as either uncertainty about joining or intent to leave early. Neither is what they want to hear.

"Why should we hire you" is the one question worth actually preparing, because generic answers ("I'm a quick learner, I'm a team player") will land flat. Tie one concrete thing from your background: a project, a skill, a result: to something TCS actually does.

• TCS Ninja: ₹3.36 LPA (most common path)
• TCS Digital: ₹7–7.5 LPA
• TCS Prime: ₹9–9.5 LPA

Your NQT coding score determines which band you qualify for. Digital and Prime are not automatic: you have to earn them in the test.

Beyond the standard NQT, TCS offers two premium tracks: TCS Digital at 7 LPA and TCS Prime at 9 to 9.5 LPA. TCS Digital selection requires scoring above the 80th percentile in the NQT and clearing an additional Hands-On Coding round with two medium-difficulty problems in Java, Python, or C. TCS Prime further requires a verbal ability score above 70 percent and is reserved for candidates from specific partner institutions or top scorers across all NQT sections. Both tracks skip the iON-based initial filter and go directly to panel interviews. Candidates who miss Digital and Prime thresholds during campus drives can still reapply when TCS opens its smart hiring portal for off-campus candidates later in the academic year.

TCS technical interviews for freshers consistently test OOPS concepts, with questions like explaining polymorphism with a real-world example, difference between method overloading and overriding, and the use of constructors in inheritance. SQL questions often include writing a query to find duplicate records, using HAVING versus WHERE, and explaining primary versus foreign key constraints. Data structure questions cover linked list reversal, stack using two queues, and binary search implementation. Interviewers also ask candidates to write small programs on paper or a shared editor, so practicing handwriting code without IDE assistance is important. Brushing up on OS concepts like process scheduling and deadlock is worthwhile as these appear in approximately 30 percent of TCS technical rounds.

After receiving a TCS offer letter through iBegin, freshers complete their document upload and background check through a portal called BU-CHECK, which validates mark sheets, degree certificates, and identity documents. Background verification is conducted by a third-party agency and typically takes 15 to 30 days. Once cleared, joining date is communicated via Ultimatix, TCS's internal ERP system which you will use throughout your TCS career for everything from attendance to learning. Initial deployment is to one of TCS's major delivery centers, and new joinees complete mandatory ILP (Initial Learning Program) training lasting 3 months. ILP includes daily assessments and a final exam that must be cleared to receive confirmed project allocation.