Get free ebooK with 50 must do coding Question for Product Based Companies solved
Fill the details & get ebook over email
Thank You!
We have sent the Ebook on 50 Must Do Coding Questions for Product Based Companies Solved over your email. All the best!

TCS Ninja Interview Questions

Last Updated on June 13, 2023 by Ankit Kochar

The TCS Ninja interview is a critical stage in the recruitment process for aspiring professionals seeking to join Tata Consultancy Services (TCS), one of the largest IT companies in India. This article aims to provide valuable insights into the TCS Ninja interview process by exploring common interview questions and offering tips on how to navigate this crucial stage successfully.

Securing a position at TCS Ninja requires candidates to showcase their technical skills, problem-solving abilities, and overall fit within the organization. The interviewers evaluate candidates’ expertise, attitude, and potential for growth, making it essential for applicants to prepare thoroughly to make a lasting impression.

In the following sections, we will delve into some of the key TCS Ninja interview questions frequently encountered during the recruitment process. We will also provide practical strategies and tips on how to effectively answer these questions, enabling candidates to demonstrate their skills, qualifications, and alignment with TCS’s work culture.

Navigating the TCS Ninja interview can be a challenging yet rewarding experience. By familiarizing yourself with the interview process and diligently preparing for potential questions, you can increase your chances of success and land a coveted position at TCS. So, let’s delve into the world of TCS Ninja interview questions and discover how to excel in this crucial stage!

About TCS

Tata Consultancy Services (TCS) is a leading global provider of IT services business solutions and consulting. Founded in 1968, TCS is a subsidiary of the Tata Group, one of India’s largest conglomerates. TCS has grown significantly over the years and today has a presence in more than 50 countries with over 450,000 employees.

TCS offers a range of services that help clients digitalize their businesses and operations, including IT services, business solutions, and outsourcing services. The company’s services are aimed at helping clients increase their competitiveness, improve customer experience, and enhance operational efficiency.

One of TCS strengths is its deep expertise in a variety of industries, including banking and financial services, healthcare, retail, and manufacturing. The company has a wide range of offerings in areas such as digital transformation, cloud computing, artificial intelligence, and Internet of Things (IoT) that allow it to provide cutting-edge solutions to its clients.

TCS Ninja Recruitment Program

The TCS Ninja Recruitment Program is a specialized hiring initiative by Tata Consultancy Services (TCS) aimed at identifying and nurturing talented individuals for entry-level positions. This program provides a platform for fresh graduates to showcase their skills, knowledge, and potential in the field of information technology.

TCS Ninja is considered one of the most challenging and competitive IT recruitment programs in India due to its rigorous selection process and the high standards of training and development provided to successful candidates. A short description is given in the table below:

Qualification Graduation and Post-Graduation
Post Trainee Engineer Jobs
Salary 3.36 to 3.6 lpa
Type of Job Private Job

TCS Ninja Recruitment Process

TCS Ninja Recruitment Process involves the following Steps:

  1. Written Test
  2. Technical Interview
  3. HR Interview

The details of these rounds are explained below in brief:

  1. Written Test
    TCS Ninja Recruitment is done on the basis of the TCS NQT(National Qualifier Test). The exam pattern along with the duration for TCS NQT is given below:

  2. Technical Interview
    After qualifying for the NQT test, you must go through the technical round. If you have an IT background, you will be examined on your programming expertise. Computer networks, database management systems, software management, operating systems, and cloud computing may be discussed. If you come from a non-CS background, you should have a basic understanding of programming. This round will last between 20 and 30 minutes.

  3. HR Interview
    After clearing the technical round, you have to undergo another Interview round known as HR/MR round. In this round, questions about onset circumstances are asked to measure management abilities. It is also used to determine whether individuals are a suitable fit for their available roles, which frequently involve management and client-facing abilities. You will be asked questions about your interests, preferences, and dislikes, as well as questions about popular subjects, throughout this round. However, during in-person interviews, HR may have asked you to answer puzzle-based questions. This round will last between 15 and 20 minutes.

TCS Ninja Interview Questions: Technical Round

This section contains the TCS Ninja Interview Questions that were asked in the Technical rounds.

Q1. What do you mean by OOPs in Programming?
Ans. OOP stands for Object-Oriented Programming and is a programming paradigm based on the concept of objects. Objects are instances of classes and are used to represent real-world entities such as people, places, and things. OOP involves organizing code into objects that have both data (attributes or properties) and behaviors (methods or functions). These objects can interact with each other and be reused across multiple projects. OOP also supports encapsulation, which means that the internal workings of an object are hidden and can only be accessed through its defined methods. This allows for better code organization, maintainability, and modularity. OOP also supports inheritance, which allows objects to inherit attributes and behaviors from parent objects, and polymorphism, which allows objects to be manipulated in a uniform way regardless of their specific type. OOP is used in many programming languages including Java, Python, and C++.

Q2. What do mean by Inheritance? Also, enlist its types.
Ans. Inheritance is a fundamental concept in Object-Oriented Programming (OOP) that allows objects to inherit attributes and behaviors from parent objects. It provides a way to create new classes (child classes) that are based on existing classes (parent classes) and extends or modify their properties and behaviors. This allows for code reusability, reducing duplication of code and making it easier to maintain and extend.

There are the following types of inheritance in OOP:

  • Single Inheritance: When a child class inherits from only one parent class, it is called single inheritance.
  • Multiple Inheritance: When a child class inherits from more than one parent class, it is called multiple inheritance.
  • Hierarchical Inheritance: When a parent class is inherited by multiple child classes, it is called hierarchical inheritance.
  • Multilevel Inheritance: When a child class inherits from a parent class, which in turn inherits from another parent class, it is called multilevel inheritance.
  • Hybrid Inheritance: When a combination of multiple inheritance techniques is used, it is called hybrid inheritance.

Q3. What is Abstraction in OOPs?
Ans. Abstraction is a fundamental concept in Object-Oriented Programming (OOP) that involves hiding the complexities of a system and presenting only the necessary information to the user. It allows for creating a simplified representation of a complex system, making it easier to understand and work with.

In OOP, abstraction is achieved through the use of abstract classes and interfaces. Abstraction helps in reducing coupling between objects, making it easier to change the implementation of a system without affecting the rest of the system. It also helps in encapsulating the implementation details of an object, making the code more modular, maintainable, and scalable.

Q4. What is Method Overloading?
Ans. Method Overloading is a feature in Object-Oriented Programming (OOP) that allows a class to have multiple methods with the same name but with different parameters. It is a way to provide multiple implementations for a single method based on the number and type of arguments passed to it. This can make the code more readable and easy to use as the method name represents its functionality, regardless of the number and type of arguments.

When a method is called, the Java runtime system determines which method to call based on the number and type of arguments passed to it. This process is known as method resolution or compile-time polymorphism. Method overloading is a form of compile-time polymorphism because the method to be called is determined at compile time based on the arguments passed to the method.

Q5. What is JIT Compiler in Java?
Ans. JIT (Just-In-Time) Compiler is a component of the Java Virtual Machine (JVM) that is responsible for optimizing the execution of Java applications at runtime. The JIT compiler compiles the Java bytecode into native machine code, which is then executed by the computer’s processor.

The JIT compiler works by dynamically compiling frequently executed sections of the Java code into native machine code. This process is known as just-in-time compilation because it happens just before the code is executed, rather than before the application is deployed. The JIT compiler optimizes the code by removing redundant operations and inlining methods, making the code faster and more efficient.

The JIT compiler is a key component of the Java platform that enables Java applications to run faster and more efficiently than interpreted languages. It is particularly useful for large applications or for applications that perform intensive computations, as it can significantly improve the performance of these applications by compiling the most frequently executed sections of the code.

Q6. Explain Linked List and what are different types of the Linked list?
Ans. A linked list is a linear data structure that consists of a chain of nodes, where each node contains a value and a reference (pointer) to the next node in the list. It provides a dynamic way of storing data, where the size of the list can grow or shrink as the data changes, without the need to allocate or deallocate memory as in arrays.

There are several types of linked lists:

  • Singly Linked List: A linked list where each node contains a value and a reference to the next node in the list.
  • Doubly Linked List: A linked list where each node contains a value and references to both the previous and next nodes in the list.
  • Circular Linked List: A linked list where the last node in the list points back to the first node, creating a circular loop.

Q7. What do you mean by Stack in Data Structure? Enlist various Operations performed on Stacks.
Ans. A stack is a linear data structure that follows the "Last In First Out" (LIFO) principle, meaning that the last item added to the stack is the first one to be removed. A stack is similar to a real-world stack of plates, where the plate that was added last is removed first.

There are several operations that can be performed on a stack:

  • Push(): This method Adds an element to the top of the stack.
  • Pop(): This method Removes the element from the top of the stack.
  • Peek(): This method Returns the element at the top of the stack without removing it.
  • isEmpty(): This Method Returns a boolean value indicating whether the stack is empty or not.
  • Size(): This method Returns the number of elements in the stack.

A stack can be implemented using an array or a linked list, and it has several applications in computer science, such as evaluating expressions, solving problems involving recursion, and implementing undo functionality in text editors and web browsers.

Q8. Explain TCP/ IP Model in Computer Networks.
Ans. The TCP/IP model is a set of protocols and standards used for communication over the internet and other computer networks. It is composed of four layers:

  • Application Layer: This layer handles communication between applications and provides user-friendly services such as email and file transfer.
  • Transport Layer: This layer is responsible for ensuring reliable delivery of data between applications, and includes protocols like TCP and UDP.
  • Network Layer: This layer handles the routing of data between networks, and includes protocols like IP and ICMP.
  • Data Link Layer: This layer is concerned with the physical transmission of data, and includes protocols like Ethernet and Wi-Fi.

Each layer performs specific functions and communicates with the corresponding layer on the receiving side to ensure successful data transmission. The TCP/IP model is the standard for communication over the internet and is used by most computer networks.

Q9. Define the Operating System.
Ans. An operating system (OS) is a software program that manages the hardware and software resources of a computer and provides a platform for running other applications. It acts as an intermediary between computer hardware and the software applications that run on it. The operating system provides a stable and consistent interface to the underlying hardware and manages tasks such as memory management, process management, device input/output, and file management. Examples of popular operating systems include Windows, macOS, Linux, and Android.

Q10. What do you mean by Firewall?
Ans. A firewall is a network security device that monitors and restricts network traffic based on predefined security rules. It acts as a barrier between a private internal network and the public internet, and is designed to prevent unauthorized access to, or from, the internal network. Firewalls are typically implemented in hardware, software, or a combination of both. They can be used to block unwanted incoming traffic, allow specific outgoing traffic, and monitor network activity to identify and prevent security threats. Firewalls are an important aspect of securing a network, and are widely used by individuals, organizations, and governments to protect sensitive information and systems from cyber attacks.

Q11. What do you mean by ACID properties?
Ans. ACID stands for Atomicity, Consistency, Isolation, and Durability, and refers to a set of properties that guarantee the reliability and consistency of data in a database. These properties are:

  • Atomicity: This property ensures that a transaction (a sequence of database operations) is treated as a single, indivisible unit of work. If any part of a transaction fails, the entire transaction will be rolled back (undone), leaving the database in its original state.
  • Consistency: This property ensures that a transaction brings the database from one consistent state to another. The database is said to be in a consistent state when it satisfies all its constraints and business rules.
  • Isolation: This property ensures that multiple transactions can be executed concurrently, without interfering with each other. Each transaction should see the database in the state it was in before the transaction started, and should not be affected by other transactions that may be executing at the same time.
  • Durability: This property ensures that once a transaction has been committed (made permanent), its effects will persist in the event of a system failure (such as a power outage). This is typically achieved by writing transaction log data to non-volatile storage, such as a hard disk.

These properties are important for ensuring the reliability and consistency of data in a database and are widely used in relational databases, NoSQL databases, and other types of data stores.

Q12. What is the difference between DDL and DML in DBMS?
Ans. DDL and DML are two categories of SQL (Structured Query Language) commands in a database management system (DBMS).

  • DDL (Data Definition Language) commands are used to define the database schema, and are used to create, modify, or delete database objects such as tables, views, indexes, and other structures. Examples of DDL commands include:

    • CREATE: This command is used to create a new database object
    • ALTER: This command is used to modify an existing database object
    • DROP: This command is used to delete a database object
  • DML (Data Manipulation Language) commands are used to manage the data stored in a database, and are used to insert, update, and delete records in a database. Examples of DML commands include:

    • SELECT: This command is used to retrieve data from a database
    • INSERT: This command is used to insert new records into a database
    • UPDATE: This command is used to modify existing records in a database
    • DELETE: This command is used to delete records from a database

DDL commands are used to define the structure of a database, while DML commands are used to manipulate the data stored in a database.

Q13. What do you mean by Software Development Life Cycle?
Ans. Software Development Life Cycle (SDLC) refers to the process of creating a software system, from conception to maintenance. It typically includes the following phases: Requirements gathering and analysis, Design, Implementation or coding, Testing, Deployment, and Maintenance. The goal of SDLC is to produce a high-quality software product that meets the needs of the stakeholders and is delivered within budget and on schedule.

Q14. What are Transactions in DBMS?
Ans. Transactions in DBMS (Database Management System) refer to a sequence of database operations that are executed as a single logical unit of work. The operations are either all completed successfully or none are completed, ensuring the consistency and reliability of the database. A transaction is a way of grouping a set of database operations such that either all of the operations are executed or none of them are. Transactions have the following properties: Atomicity, Consistency, Isolation, and Durability (ACID). Atomicity means that a transaction is treated as a single, indivisible unit of work, either all the operations are performed or none of them are. Consistency ensures that the database remains in a consistent state after each transaction, regardless of whether it succeeds or fails. Isolation means that the execution of one transaction does not affect the execution of other transactions. Durability means that once a transaction is committed, its changes are permanent and survive any subsequent failures.

Q15. What do you mean by Cloud Computing?
Ans. The term "cloud computing" refers to the internet-based storage and access of data and computer services. It refers to the availability of computer services such as servers, data storage, networking, and databases on an as-needed basis. The basic purpose of cloud computing is to provide many people access to data centers. Users can also acquire access to data that is kept on a remote server.

Cloud computing decreases the hardware and software requirements of the user. We’ve all come across cloud computing at some point. For Example, Amazon AWS, Google Cloud, Microsoft Azure, etc.

TCS Ninja Interview Questions: Coding Questions

Problem 1: Write a Program to check whether a number is prime or not?

import java.lang.*;
import java.util.*;

class Main{

    static boolean isPrime(int n){
        if (n <= 1) return false;
        else if (n == 2) return true;
        else if (n % 2 == 0) return false;

        for (int i = 3; i <= Math.sqrt(n); i += 2) {
            if (n % i == 0) return false;
        return true;

    public static void main(String[] args){
        if (isPrime(19))




Problem 2: Write a program for Insertion Sort

public class Main {
    static void sort(int arr[]){
        int n = arr.length;
        for (int i = 1; i < n; ++i) {
            int key = arr[i];
            int j = i - 1;

            while (j >= 0 && arr[j] > key) {
                arr[j + 1] = arr[j];
                j = j - 1;
            arr[j + 1] = key;

    static void printArray(int arr[]){
        int n = arr.length;
        for (int i = 0; i < n; ++i)
            System.out.print(arr[i] + " ");


    public static void main(String args[])
        int arr[] = { 12, 11, 13, 5, 6 };


5 6 11 12 13

Problem 3: Write a program to check whether the number is odd or even

class Main {
    public static void main(String[] args){
        int num = 10;

        if (num % 2 == 0) {
            System.out.println("Entered Number is Even");
        }else {
            System.out.println("Entered Number is Odd");


Entered Number is Even

Problem 4: Write a program to find factorial of a number using recursion

class Main{
    static int factorial(int n){
        if (n == 0) return 1;

        return n * factorial(n - 1);

    public static void main(String[] args){
        int num = 5;
        System.out.println("Factorial of " + num + " is " + factorial(5));


Factorial of 5 is 120

For more Coding Questions asked in TCS Ninja Interview Questions, follow the link given below:

TCS Ninja Interview Questions: HR Round

These Questions are the most frequently asked Questions in HR Round in TCS Ninja Recruitment Process.

Q1. Introduce yourself.
Ans. Interviewers frequently ask this question so that you may offer a summary of your resume so that they can get a sense of what you value the most. It is the most often asked Question in the HR Interview. The appropriate reaction might increase your chances of establishing a good first impression.

Some Tips:

  • Begin with your best accomplishments.
  • Give your detailed response in two to three minutes.
  • Indicate what you want to be highlighted in your CV.
  • Explain how you arrived at this place in your career and why it’s a good match.
  • Don’t overload the interviewer with information, but don’t leave out vital ones either.
  • Although you must prepare your response ahead of time, avoid seeming robotic. Give a direct, courteous, and confident response.
  • Use relevant terms in your response, such as inventive, problem-solving, fast-paced, creative, and so on.
  • Finish your response by describing why you’re interested in the job.

Q2. What are your Strengths and Weaknesses?
Ans. Answering this issue demands knowledge and creativity. With this question, you will be able to identify shortcomings that you hope to improve. Public speaking, time management, self-criticism, and other common areas of weakness will not reflect badly on your pick. The tone should be upbeat. Always talk solely of actual forces and never make claims about your abilities that you cannot verify. Avoid saying anything that might be adverse to your selection.


  • Instead of masking a strength as a weakness, mention and address those that may be improved.
  • Respond thoughtfully and honestly, emphasizing areas of weakness that are readily corrected.

This is not a question to admit that you struggle to meet deadlines or that you can’t understand high school algebra. Instead, utilize these questions to your advantage. It is possible that you are overly ambitious, has a high level of attention to detail, or love taking on too many jobs.

Q3. What motivates you to work with TCS?
Ans. This is one of the most important questions. There is no need to justify your interest in the post. However, you must explain why you want to work in a certain sector or profession. Inform the interviewer about the job description that best matches your talents and the company’s ideals, as well as how that fits you.

Q4. Are you comfortable Relocating?
Ans. This is one of the most important questions. There is no need to justify your interest in the post. However, you must explain why you want to work in a certain sector or profession. Inform the interviewer about the job description that best matches your talents and the company’s ideals, as well as how that fits you.

Q5. Where do you see yourself in the next five years?
Ans. Employers frequently use this question to see whether you are dedicated to the firm and have future ambitions that correspond with the role. Employers want to know that you’ll enjoy your job, that you’ll work hard, and that you’ll stay with the firm for a long time. Although it is impossible to fully see oneself five years in the future, being prepared to answer this question will help start you on the right route and make the interview more fruitful overall.

Q6. Why should we hire you?
Ans. This is the final question. After summarizing your replies to the previous questions, the interviewer will ask you why you should be hired. You should use this question to present your qualifications in a way that displays your personality and shows why you are the best candidate for the job. If you answer this question poorly, you will be in big trouble. Long, lengthy answers are not worth the employer’s time. You just have milliseconds or seconds to create an impact. Employers aren’t interested in how great you are. They want to know why you are the best applicant for the job. Employers will be considerably more willing to hire you if you can present a convincing explanation for doing so.

Q7. Do you have any backlogs?
Ans. TCS allows one backlog at the time of registration. Be honest with this question and try to assure the interviewer that you will be able to clear the backlog before the expected date of joining.

Frequently Asked Questions (FAQs)

Here are some FAQs for TCS Ninja Interview questions.

1. What is the TCS Ninja interview process like?
A. The TCS Ninja interview process typically consists of a technical interview and an HR interview. The technical interview assesses candidates’ knowledge in programming, data structures, algorithms, and related areas. The HR interview focuses on evaluating candidates’ communication skills, attitude, and cultural fit within TCS.

2. What are some common technical interview questions asked in the TCS Ninja interview?
A. Common technical interview questions in the TCS Ninja interview may include:

  • Explain the concept of polymorphism and provide an example.
  • Describe the difference between an array and a linked list.
  • How does a hash table work?
  • Write a program to reverse a string.
  • Explain the concept of recursion and provide an example.

3. How can I prepare for the technical interview in the TCS Ninja recruitment process?
A. To prepare for the technical interview, review key programming concepts, data structures, and algorithms. Practice coding problems and ensure a solid understanding of the fundamentals. Revise your academic coursework related to computer science or IT, and be prepared to explain your projects or internships in detail.

4. What kind of questions can I expect in the HR interview for TCS Ninja?
A. In the HR interview for TCS Ninja, you can expect questions that assess your personality, motivation, and cultural fit. Common HR interview questions may include:

  • Tell us about yourself.
  • Why do you want to work for TCS?
  • How do you handle stress or challenges at work?
  • Describe a situation where you demonstrated leadership skills.
  • How do you prioritize tasks and manage your time effectively?
    5. How should I prepare for the HR interview in the TCS Ninja recruitment process?
    A. To prepare for the HR interview, research TCS thoroughly to understand its values, work culture, and recent achievements. Practice answering common HR interview questions and prepare examples that demonstrate your skills, experiences, and alignment with TCS’s values. Focus on effective communication, confidence, and showcasing your passion for technology and teamwork.

6. Is it important to have technical expertise for the TCS Ninja interview?
A. Yes, technical expertise is crucial for the TCS Ninja interview. The interviewers will assess your knowledge in programming, data structures, algorithms, and related areas. It’s important to have a solid understanding of the fundamental concepts and be able to apply them to solve problems.

Leave a Reply

Your email address will not be published. Required fields are marked *