700+ TCS iON Interview Questions & Answers | Complete Prep Guide 2025

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368 interviews found

IT fresher Interview Questions & Answers

Anonymous

posted on 19 Nov 2020

I applied via Campus Placement

Interview Questionnaire

16 Questions

Q1. Introduce yourself

Ans.

I am a recent IT graduate with a passion for coding and problem-solving.

Graduated with a degree in IT
Proficient in programming languages such as Java and Python
Experience in developing web applications using HTML, CSS, and JavaScript
Strong analytical and problem-solving skills
Ability to work well in a team and communicate effectively

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Q2. Being a mathematical graduate how can you cope up in IT

Ans.

Mathematics provides a strong foundation for problem-solving and analytical skills, which are essential in IT.

Mathematics involves logical thinking and problem-solving, which are crucial skills in IT.
Mathematical concepts such as algorithms, statistics, and calculus are widely used in IT.
Mathematics also helps in developing a strong analytical mindset, which is essential in data analysis and software development.
Mathem...

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Q3. What are steps taken to join IT

Ans.

Steps to join IT include obtaining relevant education, gaining experience through internships or entry-level positions, and networking.

Obtain relevant education such as a degree in computer science or IT
Gain experience through internships or entry-level positions
Develop technical skills through online courses or certifications
Build a professional network through attending industry events or joining professional organiz...

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Q4. What are the technologies you know

Ans.

I have knowledge of programming languages such as Java, Python, and C++. I am also familiar with web development technologies like HTML, CSS, and JavaScript.

Proficient in Java, Python, and C++ programming languages
Familiar with web development technologies like HTML, CSS, and JavaScript
Knowledge of database management systems like MySQL and Oracle
Experience with version control systems like Git
Understanding of software...

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Q5. Okay tell me about that

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Q6. What programming language you know

Ans.

I know multiple programming languages including Java, Python, and C++.

Java - used for building enterprise-level applications
Python - known for its simplicity and versatility
C++ - used for system programming and game development

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Q7. What is a pointer

Ans.

A pointer is a variable that stores the memory address of another variable.

Pointers allow direct manipulation of memory.
They are used to access and modify data indirectly.
Pointers are commonly used in dynamic memory allocation.
Example: int* ptr; // declares a pointer to an integer variable.

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Q8. What is a null pointer

Ans.

A null pointer is a pointer that does not point to any memory location.

A null pointer is represented by the value 0 or NULL.
Dereferencing a null pointer results in a segmentation fault.
Null pointers are commonly used to indicate the end of a linked list or array.
Null pointers can be assigned to any pointer type.

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Q9. What are structures

Ans.

Structures are user-defined data types that allow storing multiple data types under a single name.

Structures are used to group related data together.
They can contain variables of different data types.
Structures can also contain functions.
Structures are defined using the 'struct' keyword.
Example: struct student { char name[20]; int age; float marks; };
Structures can be passed as arguments to functions.
They can also be u...

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Q10. What is nested structure

Ans.

A nested structure is a structure within another structure in programming.

It allows for more complex data structures to be created
It can be used in various programming languages such as C++, Java, and Python
An example of a nested structure is a struct within a struct in C++

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Q11. What are classes

Ans.

Classes are templates for creating objects that have similar properties and methods.

Classes are used in object-oriented programming.
They define the properties and methods that objects of that class will have.
Objects are instances of a class.
Classes can inherit properties and methods from other classes.
Examples of classes include 'Person', 'Car', and 'Animal'.

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Q12. What are classes in C++

Ans.

Classes in C++ are user-defined data types that encapsulate data and functions.

Classes are used for object-oriented programming.
They allow for data abstraction and encapsulation.
Classes can have member variables and member functions.
Objects are instances of classes.
Inheritance and polymorphism are key features of classes.

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Q13. I said no idea

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Q14. Where do you see yourself in 5 years

Ans.

In 5 years, I see myself as a senior IT professional, leading a team and contributing to the growth and success of the organization.

Leading a team of IT professionals
Contributing to the growth and success of the organization
Continuously learning and staying updated with the latest technologies
Taking up challenging projects and delivering successful solutions
Building strong professional relationships and networking with

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Q15. According to you what do you need ...technical skills or team collabration

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Q16. Can you work in night shift and can you relocate

Ans.

Yes, I am willing to work in night shifts and relocate if required.

I am flexible and adaptable to different work schedules, including night shifts.
I understand the importance of providing 24/7 support in the IT industry.
I am open to relocating for better career opportunities and growth.
I have a strong commitment to my work and can adjust to new environments.
I am willing to make necessary arrangements to ensure smooth t

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Interview Preparation Tips

Interview preparation tips for other job seekers - It was good...You shouldnt be tensed...you can talk whatever you know...be confident always

Skills evaluated in this interview

IT fresher Interview Questions asked at other Companies

Q1. What are the technologies you know

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Software Engineer Interview Questions & Answers

Anonymous

posted on 11 Dec 2024

Interview experience

Good

Difficulty level

Moderate

Process Duration

2-4 weeks

Result

Selected

I applied via Walk-in and was interviewed in Nov 2024. There was 1 interview round.

Round 1 - Technical

(3 Questions)

Q1. SQL Array Oop

Add your answer

Q2. Array defintiion and uses

Ans.

An array is a data structure that stores a collection of elements of the same data type.

Arrays are used to store multiple values in a single variable.
Elements in an array are accessed by their index, starting from 0.
Example: String[] names = {"Alice", "Bob", "Charlie"};

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Q3. Data structures and its uses

Ans.

Data structures are used to organize and store data efficiently in computer memory.

Data structures help in efficient data retrieval, insertion, and deletion operations.
Examples include arrays, linked lists, stacks, queues, trees, and graphs.
Each data structure has its own advantages and use cases based on the requirements of the application.
For example, arrays are used for random access to elements, while linked lists

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Software Engineer Interview Questions asked at other Companies

Q1. Bridge and torch problem : Four people come to a river in the night. There is a narrow bridge, but it can only hold two people at a time. They have one torch and, because it's night, the torch has to be used when crossing the bridge. Person... read more

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TCS iON Interview Questions and Answers for Freshers

Software Development Engineer Interview Questions & Answers

Anonymous

posted on 20 Dec 2024

Interview experience

Average

Difficulty level

Process Duration

Result

Round 1 - Coding Test

(2 Questions)

Q1. Jump game from leetcode

Add your answer

Q2. Rotation of matrix by 45 degress

Ans.

To rotate a matrix by 45 degrees, transpose the matrix and then reverse the rows.

Transpose the matrix
Reverse the rows of the transposed matrix

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Round 2 - HR

(2 Questions)

Q1. What is encapsulation in oops?

Ans.

Encapsulation is the concept of bundling data and methods that operate on the data into a single unit.

Encapsulation helps in hiding the internal state of an object and restricting access to it.
It allows for data hiding, which prevents direct access to an object's attributes.
Encapsulation also enables the concept of data abstraction, where only relevant details are exposed to the outside world.
By using access modifiers ...

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Q2. How do you configure MySQL database ?

Ans.

MySQL database can be configured using configuration files like my.cnf, command line options, and environment variables.

Use my.cnf file to configure settings like port number, data directory, and buffer sizes
Command line options can be used to override settings from my.cnf file
Environment variables like MYSQL_ROOT_PASSWORD can be used to set passwords during installation

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Interview Preparation Tips

Interview preparation tips for other job seekers - Practice with LeetCode and ensure that everything is reflected on your resume.

Software Development Engineer Interview Questions asked at other Companies

Q1. Given an acyclic graph of a city where each edge represents a road in the city and each vertex represents an crossing. Write an algo to find out the minimum number of vertices at which a policemen will be kept so that all the roads are cove... read more

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Process Associate Interview Questions & Answers

Anonymous

posted on 22 Dec 2024

Interview experience

Good

Difficulty level

Moderate

Process Duration

Less than 2 weeks

Result

Not Selected

I applied via Company Website and was interviewed in Nov 2024. There were 3 interview rounds.

Round 1 - Aptitude Test

Multiple-choice question.

Round 2 - Technical

(2 Questions)

Q1. As per interviewer

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Q2. As per process

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Round 3 - HR

(2 Questions)

Q1. As per company policy

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Q2. Same

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Interview Preparation Tips

Interview preparation tips for other job seekers - Help me find better job opportunities in the life sciences sector.

Process Associate Interview Questions asked at other Companies

Q1. How will you explain a red colour (or any colour) to a person who is blind since his or her birth?

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System Engineer Interview Questions & Answers

Venkata Surya Prasad Madine

posted on 12 Dec 2024

Interview experience

Good

Difficulty level

Process Duration

Result

Round 1 - Coding Test

TCS NQT consists of MCQ and coding

Round 2 - Technical

(2 Questions)

Q1. Internship expereinces

Add your answer

Q2. I explained my resume

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Round 3 - HR

(2 Questions)

Q1. Is it ok for Reallocation

Ans.

Yes, reallocation is acceptable in certain situations to optimize resources.

Reallocation can be acceptable if it helps optimize resources and improve efficiency.
For example, reallocating server resources to handle increased traffic during peak hours.
Reallocation should be carefully planned and executed to avoid negative impacts on system performance.
Regular monitoring and evaluation of the reallocated resources is impo

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Q2. Yes

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System Engineer Interview Questions asked at other Companies

Q1. Election Winner Determination In an ongoing election between two candidates A and B, there is a queue of voters that includes supporters of A, supporters of B, and neutral voters. Neutral voters have the power to swing the election results ... read more

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Get interview-ready with Top TCS iON Interview Questions

Java Developer Interview Questions & Answers

Anonymous

posted on 21 Dec 2024

Interview experience

Bad

Difficulty level

Easy

Process Duration

Less than 2 weeks

Result

Selected

I applied via Naukri.com and was interviewed in Nov 2024. There were 2 interview rounds.

Round 1 - Aptitude Test

Duration is 1 hr and topic is core java

Round 2 - HR

(2 Questions)

Q1. What i sth OOPS

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Q2. What i s abstract class

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Java Developer Interview Questions asked at other Companies

Q1. Sort 0 and 1 Problem Statement Given an integer array ARR of size N containing only integers 0 and 1, implement a function to sort this array. The solution should scan the array only once without using any additional arrays. Input: The firs... read more

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Software Developer Interview Questions & Answers

sudeep patil

posted on 27 Nov 2024

Interview experience

Excellent

Difficulty level

Process Duration

Result

I applied via Campus Placement

Round 1 - Aptitude Test

Time value distance clock

Round 2 - Technical

(1 Question)

Q1. Points arrays oparetor

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Round 3 - HR

(2 Questions)

Q1. Tell me Your self

Add your answer

Q2. Why should higher you

Add your answer

Interview Preparation Tips

Interview preparation tips for other job seekers - Keep learning every time
Don't vest time

Software Developer Interview Questions asked at other Companies

Q1. Maximum Subarray Sum Problem Statement Given an array of integers, determine the maximum possible sum of any contiguous subarray within the array. Example: Input: array = [34, -50, 42, 14, -5, 86] Output: 137 Explanation: The maximum sum is... read more

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C Developer Interview Questions & Answers

Anonymous

posted on 11 Sep 2024

Interview experience

Average

Difficulty level

Process Duration

Result

I applied via Campus Placement

Round 1 - Coding Test

2 questions were asked. Questions were easy - one from graph and one from dp.

Round 2 - Technical

(2 Questions)

Q1. Difference between multi-programming and multi-tasking.

Ans.

Multi-programming involves running multiple programs on a single processor, while multi-tasking involves running multiple tasks within a single program.

Multi-programming allows multiple programs to be loaded into memory and executed concurrently, switching between them to utilize processor time efficiently.
Multi-tasking allows a single program to perform multiple tasks simultaneously, such as running multiple threads o...

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Q2. How to delete the middle element of a linked list?

Ans.

To delete the middle element of a linked list, find the middle element using slow and fast pointers, then remove it by adjusting the pointers.

Use slow and fast pointers to find the middle element
Adjust pointers to skip the middle element and connect the surrounding nodes
Free the memory of the deleted node

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Round 3 - HR

(2 Questions)

Q1. Are you willing to relocate?

Ans.

Yes, I am open to relocating for the right opportunity.

I am open to relocating for the right job opportunity.
I am willing to move to a new location if required for the job.
I am flexible and willing to relocate for the right position.

Answered by AI

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Q2. Why do you want to join TCS?

Ans.

I want to join TCS because of its reputation for providing challenging projects and opportunities for growth.

TCS is known for its innovative projects in various industries.
I am impressed by TCS's commitment to employee development.
I believe TCS will provide me with a platform to enhance my skills and knowledge.

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Skills evaluated in this interview

C Developer Interview Questions asked at other Companies

Q1. String Transformation Problem Given a string (STR) of length N, you are tasked to create a new string through the following method: Select the smallest character from the first K characters of STR, remove it from STR, and append it to the n... read more

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Sdet Engineer Interview Questions & Answers

ANKIT PASWAN

posted on 8 Oct 2024

Interview experience

Excellent

Difficulty level

Moderate

Process Duration

2-4 weeks

Result

Not Selected

I applied via Campus Placement and was interviewed in Sep 2024. There were 3 interview rounds.

Round 1 - Aptitude Test

It is very easy round

Round 2 - Coding Test

One easy and one medium

Round 3 - Technical

(2 Questions)

Q1. Four pillers of oops

Ans.

Encapsulation, Inheritance, Polymorphism, Abstraction

Encapsulation: Bundling data and methods that operate on the data into a single unit. Example: Class in Java
Inheritance: Ability of a class to inherit properties and behavior from another class. Example: Subclass extending a superclass
Polymorphism: Ability to present the same interface for different data types. Example: Method overloading in Java
Abstraction: Hiding t...

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Q2. What is sql and database

Ans.

SQL is a programming language used to manage and manipulate data in relational databases.

SQL stands for Structured Query Language
It is used to communicate with databases to perform tasks like querying, updating, and deleting data
Common SQL commands include SELECT, INSERT, UPDATE, DELETE
Examples of popular databases that use SQL include MySQL, PostgreSQL, Oracle

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Skills evaluated in this interview

Sdet Engineer Interview Questions asked at other Companies

Q1. Tell me about the projects and knowledge on selenium api and etc?

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Senior Modeller Interview Questions & Answers

Irene Diana

posted on 16 Aug 2024

Interview experience

Excellent

Difficulty level

Process Duration

Result

Round 1 - Technical

(4 Questions)

Q1. SQL window function

Add your answer

Q2. About joins and explain

Add your answer

Q3. Performance optimization

Add your answer

Q4. Normalisation and denormalization

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Round 2 - HR

(2 Questions)

Q1. Why you need job change

Ans.

Seeking new challenges and growth opportunities in a more senior role.

Looking for career advancement
Seeking new challenges and projects
Interested in expanding skill set and knowledge
Want to take on more responsibilities and leadership roles

Answered by AI

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Q2. Why tcs after a long gap

Ans.

TCS offers a challenging work environment and opportunities for growth after a long gap.

TCS is known for its diverse projects and cutting-edge technologies, providing a stimulating work environment.
After a long gap, I am eager to re-enter the workforce and TCS offers a platform for me to showcase my skills and expertise.
TCS has a strong reputation in the industry and I believe working here will help me enhance my caree

Answered by AI

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Senior Modeller Interview Questions asked at other Companies

Q1. How do you make different systems to talk to each other? what are the considerations to design a data product? challenges and scenario based

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System Engineer 3 Interview Questions & Answers

mohit paryani

posted on 16 Dec 2024

Interview experience

Good

Difficulty level

Moderate

Process Duration

Result

Round 1 - Aptitude Test

Basic aptitude questions

Round 2 - Technical

(1 Question)

Q1. Questions related to logic gates

Add your answer

Round 3 - HR

(1 Question)

Q1. Questions related to puzzles to judge your reasoning abilities

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System Engineer 3 Interview Questions asked at other Companies

Q1. What is Object Oriented Programming? What is difference between drop and delete? (DBMS question)

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TCS iON Interview FAQs

How many rounds are there in TCS iON interview?

TCS iON interview process usually has 2-3 rounds. The most common rounds in the TCS iON interview process are Aptitude Test, Technical and HR.

What are the top questions asked in TCS iON interview?

Some of the top questions asked at the TCS iON interview -

What are the technologies you k...read more
Manage projects with Repositories Clone a project to work on a local copy Contr...read more
What programming language you k...read more

How long is the TCS iON interview process?

The duration of TCS iON interview process can vary, but typically it takes about less than 2 weeks to complete.

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TCS iON Interviews By Designations

Interview Questions for Popular Designations

TCS iON Interview Process

based on 341 interviews

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TCS iON Salaries in India

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Software Developer 154 salaries	Unlock ₹0 L/yr - ₹0 L/yr
System Engineer 126 salaries	Unlock ₹0 L/yr - ₹0 L/yr
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