Top 20 TCS NQT Interview Questions and Answers 2024

TCS NQT Interview Questions and Answers

The TCS NQT (National Qualifier Test) 2024 is an online exam by Tata Consultancy Services (TCS) to hire fresh graduates. The interview questions will test your thinking skills, math abilities, coding knowledge, and technical understanding. For thinking skills, they may give you puzzles or patterns to solve or ask you to make decisions based on the information provided. Math questions could involve basic arithmetic, algebra, or analyzing data. Let’s look at this blog on TCS NQT Interview Questions and Answers 2024.

Furthermore, coding questions will be asked in the TCS NQT Interview, to write small programs or explain programming ideas. Practicing sample questions diligently can increase your chances of cracking the TCS NQT interview. TCS NQT Interview Questions and Answers can be accessed on our blog and are uploaded below for your reference. Candidates can also access the mock test from our blog and thus, it will allow them to clear the interview questions. Before attempting the TCS NQT, candidates can check out the TCS NQT Exam Analysis Blog.

What is the TCS NQT Interview 2024 Process?

Candidates should remember the rounds of the TCS NQT Exam before appearing for the interview and refer to the TCS NQT Interview Questions and Answers for more details. The majority of TCS recruitment drives follow a standard pattern, which typically involves the following rounds. Refer to the TCS interview Questions and Answers that are provided below. Freshers can also look into the Preparation Strategy before knowing the NQT Interview Questions And Answers.

1. TCS online assessment exam: Candidates are required to take an online test that evaluates their aptitude, logical reasoning, quantitative abilities, and coding skills.
2. Technical Interview: Successful candidates from the online assessment are invited for a technical interview, where their subject knowledge, problem-solving abilities, and technical skills are thoroughly evaluated.
3. HR/MR (Human Resources/Management Resources) Interview: This final round assesses a candidate’s personality, communication skills, cultural fit, and overall suitability for the role.

To secure a job opportunity at TCS, candidates must perform well in the online assessment exam and excel in the subsequent interview rounds. Thorough preparation, understanding the process, and showcasing one’s skills and abilities effectively can significantly increase the chances of being selected by this esteemed IT company.

What are the top 20 TCS NQT Interview Questions And Answers 2024?

Candidates must look at the TCS NQT Interview Questions And Answers 2024 questions below. The questions that are commonly asked in the TCS Technical Interview are the following.

1. What is the difference between C++ and Java?
   Answer: C++ is a compiled language, while Java is an interpreted language. C++ supports pointers, while Java does not. C++ follows a procedural programming approach, while Java follows an object-oriented approach.

2. Write a program to generate the Fibonacci series up to a given number.

def fibonacci(n):
    fib_series = [0, 1]
    while fib_series[-1] + fib_series[-2] <= n:
        fib_series.append(fib_series[-1] + fib_series[-2])
    return fib_series

n = int(input("Enter the number: "))
print("Fibonacci series up to", n, ":", fibonacci(n))

3. Write a program to reverse a string without using built-in functions or libraries.

def reverse_string(s):
reversed_str = ""
for i in range(len(s) - 1, -1, -1):
reversed_str += s[i]
return reversed_str

input_str = input("Enter a string: ")
print("Reversed string:", reverse_string(input_str))

4. Write a program to calculate the factorial of a given number.

def factorial(n):
    if n == 0 or n == 1:
        return 1
    else:
        return n * factorial(n - 1)

num = int(input("Enter a number: "))
print("Factorial of", num, "is", factorial(num))

5. What is the purpose of the “static” keyword in Java?
Answer: The “static” keyword is used to declare variables, methods, and blocks that belong to the class itself rather than any specific instance of the class. Static members can be accessed without creating an object of the class.

6. Write a program to convert a binary number to its decimal equivalent.

def binary_to_decimal(binary):
    decimal = 0
    power = 0
    for digit in reversed(binary):
        decimal += int(digit) * (2 ** power)
        power += 1
    return decimal

binary_num = input("Enter a binary number: ")
print("Decimal equivalent:", binary_to_decimal(binary_num))

7. What is the difference between ArrayList and LinkedList in Java?

Feature	ArrayList	LinkedList
Implementation	Implements List interface	Implements List and Deque interfaces
Internal Structure	Uses an array-like structure to store elements	Uses a doubly-linked list structure
Random Access	Provides constant-time performance for random access of elements (O(1))	Does not provide constant-time performance for random access

8. What is the difference between method overloading and method overriding in Java?

Feature	Method Overloading	Method Overriding
Definition	Allows a class to have multiple methods with the same name but different parameter lists	Allows a subclass to provide a specific implementation of a method that is already defined in its parent class
Inheritance	Not dependent on inheritance	Dependent on inheritance
Access Modifier	Can have different access modifiers for overloaded methods	Must have the same or broader access modifier as the overridden method

9 What is the purpose of the “final” keyword in Java?
Answer: The “final” keyword is used to restrict the modification of variables, methods, and classes. A final variable cannot be reassigned, a final method cannot be overridden, and a final class cannot be extended.

10. Write a program to rotate elements of an array to the left by a given number of positions.

def rotate_array(arr, k):
    return arr[k:] + arr[:k]

array = [1, 2, 3, 4, 5]
k = 2
print("Original array:", array)
print("Array after rotation:", rotate_array(array, k))

11. What is the purpose of the “super” keyword in Java?
Answer: The “super” keyword is used to call the constructor or methods of the parent class from a subclass. It is also used to access the parent class members if they have been overridden in the subclass.

12. Write a program to rotate elements of an array to the left by a given number of positions.

def rotate_array(arr, k):
    return arr[k:] + arr[:k]

array = [1, 2, 3, 4, 5]
k = 2
print("Original array:", array)
print("Array after rotation:", rotate_array(array, k))

13. What is the difference between the pre-increment (++i) and post-increment (i++) operators in Java?
Answer: The pre-increment operator (++i) increments the variable’s value and then returns the incremented value, while the post-increment operator (i++) returns the current value of the variable and then increments it.

14. Write a program to sort elements of an array in ascending order using any sorting algorithm.

def bubble_sort(arr):
    n = len(arr)
    for i in range(n - 1):
        for j in range(0, n - i - 1):
            if arr[j] > arr[j + 1]:
                arr[j], arr[j + 1] = arr[j + 1], arr[j]

array = [64, 34, 25, 12, 22, 11, 90]
print("Original array:", array)
bubble_sort(array)
print("Sorted array:", array)

15. What is the difference between abstract and concrete classes in Java?
Answer: An abstract class is a class that cannot be instantiated and may contain abstract methods (methods without a body) that its subclasses must implement. A concrete class is a class that can be instantiated and contains implementation for all of its methods.

16. What is the purpose of the “static” block in Java?
Answer: A “static” block in Java is a block of code that is executed when the class is first loaded into memory by the JVM. It is typically used to initialize static variables or perform any other one-time initialization tasks.

17. What is the difference between the “String” and “StringBuilder” classes in Java?
Answer: The “String” class in Java is immutable, meaning that its value cannot be changed once it is created. The “StringBuilder” class, on the other hand, is mutable and provides a more efficient way to modify and manipulate strings.

18. What is the purpose of the “instance of” operator in Java?
Answer: The “instance of” operator in Java is used to check whether an object is an instance of a particular class or an instance of a subclass of that class. It is commonly used for type-checking and casting objects.

19. What is the purpose of the “package” in Java?
Answer: The “package” in Java is used to organize and group related classes and interfaces into a namespace. It helps to prevent naming conflicts and provides a way to control access to classes and interfaces.

20. What is the difference between a “HashSet” and a “LinkedHashSet” in Java?
Answer: A “HashSet” is an unordered collection of unique elements, while a “LinkedHashSet” is an ordered collection of unique elements that maintains the insertion order of elements.

21. What is the purpose of the “switch” statement in Java?
Answer: The “switch” statement in Java is a control flow statement that evaluates an expression and executes the associated block of code based on the value of the expression. It provides a more concise and readable alternative to nested “if-else” statements.

22. What is the purpose of the “try-with-resources” statement in Java?
Answer: The “try-with-resources” statement in Java is used to automatically close resources (e.g., files, database connections, etc.) that implement the AutoCloseable interface. It ensures that these resources are properly closed, even in the event of an exception, eliminating the need for explicit closing in a “finally” block.

23. What is the difference between the “fail-fast” and “fail-safe” iterators in Java? Answer: In Java, “fail-fast” iterators throw a ConcurrentModificationException if the collection is modified while iterating over it. This behavior is designed to prevent unexpected behaviors and maintain the integrity of the data.

On the other hand, “fail-safe” iterators create a copy of the collection and iterate over that copy, allowing modifications to the original collection without causing exceptions. However, the iterator may not reflect the changes made to the original collection. The Iterator interface in Java implements the “fail-fast” behavior, while the ConcurrentHashMap.KeySetView and ConcurrentHashMap.Values classes provide “fail-safe” iterators.

These questions cover various topics, including operators, control flow statements, exception handling, strings, collections, and packages, providing a more diverse set of potential interview questions for the TCS NQT Exam.

What are the TCS HR Round Interview Questions?

The TCS NQT interview Questions And Answers that will be asked in the HR round are the following:

1.Who is the CEO of TCS?

Ans. Rajesh Gopinathan

2. What is the difference between a service-based and a product-based company?

Ans. A product-based company focuses on selling physical goods to customers, while a service-based company offers intangible services to clients. Products are tangible and can be stored, whereas services are intangible and performed on demand.

3. Have you ever experienced failure in your life? Tell me about that experience.

Ans. Yes, I have experienced failure in my life. One instance was when I put in a lot of hard work towards a project, but it did not yield the desired results. However, I learned from that experience, analyzed where I went wrong, and used those lessons to improve myself for future endeavors.

4. Have you participated in any of TCS’ competitions like Codevita?

Ans. Yes, I have participated in TCS’ CodeVita competition, which is a coding challenge that tests programming skills and problem-solving abilities. It was a great learning experience that motivated me to improve my coding skills further.

5. Are you ready to relocate? Are you ready to sign the service agreement?

Ans. Yes, I am ready to relocate for this opportunity with TCS. I understand the requirement and am prepared to sign the service agreement.

6. Tell me about yourself.

Ans. Provide a brief introduction about your background, education, and key strengths relevant to the role you have applied for at TCS.

7. Why did you choose this career path?

Ans. Explain your interests, motivations, and the factors that influenced your decision to pursue this particular field.

8. What are your strengths and weaknesses?

Ans. Highlight your strengths that align with the job requirements, and explain a weakness that is not a core competency for the role, along with how you are working to improve it.

9. Why do you want to work for TCS?
Ans. Research the company culture, values, and growth opportunities at TCS, and explain how they align with your career goals and aspirations.

9. How do you handle pressure or stress?
Ans. Provide examples of strategies you use to manage stress, such as time management, prioritization, or seeking support when needed.

10. Describe a time when you faced a challenging situation and how you handled it.
Ans. Share a specific example that demonstrates your problem-solving abilities, resilience, and lessons learned.

11. What motivates you?
Ans. Discuss factors that drive your performance, such as learning opportunities, challenging projects, or contributing to meaningful work.

12. How do you handle conflicts or disagreements with team members?
Ans. Emphasize your ability to communicate effectively, listen to different perspectives, and find collaborative solutions.

13. Describe a time when you had to work in a team.
Ans. Provide an example that showcases your teamwork skills, cooperation, communication, and contribution to a shared goal.

14. What are your salary expectations?
Ans. Provide a range based on your research and be prepared to discuss your expectations while remaining flexible.

15. How do you prioritize multiple tasks or projects?
Ans. Explain your approach to time management, setting priorities, and meeting deadlines effectively.

16. What are your long-term career goals?
Ans. Share your aspirations and how this role at TCS aligns with your long-term career objectives.

17. How do you handle criticism or feedback?
Ans. Emphasize your openness to constructive feedback and your commitment to continuous learning and improvement.

18. What do you know about TCS’s products or services?
A: Demonstrate your knowledge of TCS’s offerings and how your skills and experience align with the company’s business.

19. Do you have any questions for us?
A: Prepare insightful questions about the role, company culture, or growth opportunities to demonstrate your genuine interest in the position.

20. How do you plan to balance your work and personal life?

Ans: This question assesses your ability to manage competing priorities and maintain a healthy work-life balance, which is crucial for productivity and well-being.

Remember, these questions aim to assess your fit for the role, communication skills, problem-solving abilities, and alignment with TCS’s values and culture. Tailor your answers to highlight your relevant experiences and qualifications while showcasing your professionalism and enthusiasm for the opportunity.

The TCS NQT (National Qualifier Test) interview questions and answers cover a broad range of topics related to programming concepts, data structures, and object-oriented principles in Java. Candidates should be aware of the TCS NQT interview Questions and Answers for cracking the TCS NQT Exam 2024.

However, These questions are designed to assess a candidate’s understanding of fundamental programming concepts and their ability to apply them in real-world scenarios. The answers provided are concise, easy to understand, and highlight the key differences, purposes, and applications of various Java language features and programming constructs. By thoroughly understanding these concepts and practicing with similar questions, candidates can better prepare themselves for the technical interview round of the TCS NQT Exam and enhance their chances of success.

Important Links – TCS NQT

1. TCS NQT Apply Online 2024, Direct Application Link
2. TCS NQT Eligibility Criteria 2024, Qualification, Percentage, Backlog
3. TCS NQT Registration Process 2024, Step-By-Step Process
4. TCS NQT Companies List 2024, Check Complete List

TCS NQT Interview Questions -FAQs