TCS Interview Questions 2026: HR + Technical Answers

Last Updated: 14 May 2026 by Aditya Sharma.

Updated for 2026-05-14, what is verified-current

About the author

This guide is curated by Aditya Sharma as interview-practice material. It does not maintain a proprietary TCS hiring dataset, live role count, verified candidate-thread record, or current salary and cutoff catalogue. Use the current TCS invitation, official careers channel, and your written offer for any live detail.

Practice focus for a TCS interview

Treat the live invitation as the source of truth for the assessment and interview sequence. This page does not estimate current TCS openings, annual hiring, band allocation, or a route-specific coding round.

For preparation, practise explaining a project, walking through a small program, and answering a behavioural question with a concrete example. Add aptitude, verbal, and coding-logic drills only when the actual invitation asks for them. These are portable habits, not a prediction of a current TCS process.

If you have two weeks, divide the time between fundamentals, one project narrative, concise HR answers, and timed practice. Use the role description to choose the mix rather than using a historic hiring label as a promise.

TCS Selection Process Overview

HR Interview Questions with Answers

Q1: Tell me about yourself.

Q2: Why do you want to join TCS?

Q3: Where do you see yourself in 5 years?

Q4: What are your strengths and weaknesses?

Q5: Are you willing to relocate and work night shifts?

Q6: Tell me about a challenging situation you faced and how you handled it.

Q7: What do you know about TCS's digital initiatives?

Q8: How do you handle pressure and tight deadlines?

Q9: What are your salary expectations?

Q10: Do you have any questions for us?

1. What does the typical career progression look like for a fresher in TCS?
2. Are there opportunities to work on emerging technologies like AI/ML or blockchain?
3. What kind of training programs are available for new joiners?
4. How does TCS support employees who want to pursue higher education or certifications?"

Technical Interview Questions with Answers

Q1: Explain OOPs concepts with real-world examples.

1. Encapsulation: Bundling data and methods that work on that data within a single unit (class). Example: A capsule containing medicine - the outer shell protects the contents. In code, private variables with public getters/setters.

2. Abstraction: Hiding complex implementation details and showing only essential features. Example: Driving a car - you use the steering and pedals without knowing the engine's internal working.

3. Inheritance: Creating new classes from existing ones, promoting code reuse. Example: A child inheriting traits from parents. In code, a 'Car' class inheriting from 'Vehicle'.

4. Polymorphism: Ability to take multiple forms. Example: A person behaving differently as a student, employee, or parent. In code, method overloading (compile-time) and overriding (runtime)."

Q2: What is the difference between SQL and NoSQL databases?

SQL is ideal for applications requiring complex transactions and data integrity, like banking. NoSQL excels in handling unstructured data and massive scale, like social media platforms."

Q3: Write a program to reverse a string without using built-in functions.

Answer:

public class StringReverse {
    public static String reverseString(String str) {
        char[] charArray = str.toCharArray();
        int left = 0;
        int right = charArray.length - 1;
        
        while (left < right) {
            // Swap characters
            char temp = charArray[left];
            charArray[left] = charArray[right];
            charArray[right] = temp;
            
            left++;
            right--;
        }
        
        return new String(charArray);
    }
    
    public static void main(String[] args) {
        String input = "TCSInterview";
        System.out.println("Original: " + input);
        System.out.println("Reversed: " + reverseString(input));
    }
}

Output: weivretnISCT

Q4: Explain the Software Development Life Cycle (SDLC).

1. Requirement Analysis: Gathering and analyzing user needs, creating SRS (Software Requirements Specification).

2. Design: Creating architecture, database design, and UI/UX mockups. HLD (High-Level Design) and LLD (Low-Level Design) documents are prepared.

3. Implementation/Coding: Developers write code based on design documents, following coding standards.

4. Testing: QA team performs unit, integration, system, and UAT testing to identify bugs.

5. Deployment: Releasing the software to production environment after successful testing.

6. Maintenance: Fixing issues, adding enhancements, and providing ongoing support.

Popular SDLC models include Waterfall (sequential), Agile (iterative), Spiral (risk-driven), and V-Model (verification-validation parallel)."

Q5: What is the difference between ArrayList and LinkedList in Java?

ArrayList is better for scenarios with more read operations, while LinkedList excels when frequent modifications are needed. ArrayList implements RandomAccess interface, making it faster for indexed access."

Q6: Explain REST API and its principles.

1. Statelessness: Each request contains all information needed; server doesn't store client context between requests.

2. Client-Server Architecture: Clear separation between client (UI) and server (data storage), allowing independent evolution.

3. Cacheability: Responses must define themselves as cacheable or not to improve performance.

4. Uniform Interface: Standardized way of interacting with resources using HTTP methods:

   • GET: Retrieve resource
   • POST: Create resource
   • PUT: Update resource
   • DELETE: Remove resource

5. Layered System: Client cannot tell if connected directly to server or through intermediaries.

6. Resource-Based: Everything is a resource identified by URIs (/users/123).

Example: GET https://api.tcs.com/employees/101 returns employee data in JSON format."

Q7: What is the difference between Process and Thread?

A process can have multiple threads. Threads within a process share code, data, and heap but have separate registers and stack."

Q8: Write a SQL query to find the 2nd highest salary from an Employee table.

Answer:

-- Method 1: Using subquery with MAX
SELECT MAX(salary) as SecondHighestSalary
FROM Employee
WHERE salary < (SELECT MAX(salary) FROM Employee);

-- Method 2: Using LIMIT/OFFSET (MySQL)
SELECT DISTINCT salary
FROM Employee
ORDER BY salary DESC
LIMIT 1 OFFSET 1;

-- Method 3: Using DENSE_RANK (For handling duplicates)
SELECT salary
FROM (
    SELECT salary, DENSE_RANK() OVER (ORDER BY salary DESC) as rank
    FROM Employee
) ranked
WHERE rank = 2;

Method 3 is most robust as it handles duplicate salaries correctly using DENSE_RANK().

Q9: What is the difference between GET and POST methods?

GET is for read operations; POST is for write operations. Never use GET for passwords or sensitive data."

Q10: Explain the MVC architecture.

Model: Represents data and business logic. Handles data storage, retrieval, and validation. Example: User class with properties like name, email, and methods to save to database.

View: Handles presentation layer - what users see. Renders data from model. Examples: HTML templates, JSON responses, UI components.

Controller: Acts as intermediary between Model and View. Receives user input, processes it using Model, and selects View to display results.

Flow: User interacts with View → Controller handles request → Model processes data → Controller updates View → User sees result.

Advantages:

• Separation of concerns
• Parallel development possible
• Easier maintenance and testing
• Code reusability

Popular frameworks using MVC: Spring (Java), Django (Python), ASP.NET MVC, Ruby on Rails."

Managerial/Behavioral Questions with Answers

Q1: How would you handle a team member not contributing their share?

Q2: Describe a time you showed leadership.

Q3: How do you prioritize multiple urgent tasks?

Q4: Tell me about a time you made a mistake and how you handled it.

Q5: How do you stay updated with the latest technologies?

Tips for Cracking TCS Interview

1. Master NQT Pattern: TCS NQT is the first hurdle. Practice extensively on platforms like PrepInsta, Indiabix, and TCS-specific mock tests. Focus on the Foundation numerical block and coding-logic tracing for Advanced.

2. Know Your Resume: Every word on your resume is fair game. Be prepared to explain projects, technologies mentioned, and any certifications in detail.

3. Practice Coding: Be comfortable with at least one programming language (Java/Python/C++). Practice 100+ coding problems covering arrays, strings, and basic algorithms.

4. Understand TCS Digital: If applying for TCS Digital, prepare for higher difficulty in technical rounds. Know about TCS's digital transformation projects and be ready for system design basics.

5. DBMS is Crucial: TCS heavily focuses on database concepts. Master SQL queries, normalization, joins, and basic NoSQL concepts.

6. Mock Interviews: Practice with friends or use platforms like Pramp. Record yourself to improve body language and communication clarity.

7. Stay Calm in MR Round: The Managerial Round tests stress handling. Maintain composure, think before answering, and show confidence without arrogance.

8. Ask Intelligent Questions: Prepare 2-3 thoughtful questions about the role, team, or company. This shows genuine interest.

9. Dress Professionally: Even for virtual interviews, dress in formal attire. First impressions matter.

10. Follow Up: Send a thank-you email within 24 hours, reiterating your interest in the role.

You May Also Like

• Stack and Queue Interview Questions 2026
• Top 50 Data Structures Interview Questions 2026
• Intel Interview Questions 2026 - Round-by-Round Guide
• Prompt Engineering Interview Questions 2026, Top 50 Questions with Answers

Live Mock Test, May 2026 Edition

5 original questions written by Aditya Sharma, calibrated to the TCS 2026 batch difficulty. Click any option to lock your answer; solutions reveal after.