NTT DATA - interview guide

NTT DATA interview questions - a complete guide

NTT DATA's online test is reported as the biggest filter, and non-CS students may be asked about their own branch. Here is how to prepare for both.

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About NTT DATA

NTT DATA is a Japanese IT services company that works worldwide. In India, freshers usually join roles such as Graduate Engineer Trainee and Associate Software Engineer.

This guide covers 13 NTT DATA interview questions with answers - what each question checks and how to answer it - plus the NTT DATA interview process, round by round, a 7-day preparation plan for freshers, tips and the mistakes to avoid.

NTT DATA hiring process

  1. Step 1: Online test

    An AMCAT-style test - quantitative, logical, verbal and programming. Most people are filtered out here.

  2. Step 2: Group discussion (sometimes)

    Topics like AI and remote work - structure, listening and tone are watched.

  3. Step 3: Technical and HR

    OOP, SQL, data structures - and for non-CS students, questions from their branch. Then HR.

NTT DATA does not publish its fresher hiring process in detail (as of our check). This information is based on candidate reports and varies by role, city and drive - read the official job posting before you apply.

Sources (checked 16 October 2026): NTT DATA Careers. Hiring processes change - read the official notice before you apply.

NTT DATA interview questions and answers

Technical round

  1. 1.Give real-life uses of a stack.

    What they're checking
    Practical understanding of data structures.
    How to answer
    The undo button, the browser's back button, function calls and checking brackets.

  2. 2.How do you find duplicate rows in SQL?

    What they're checking
    Practical SQL.
    How to answer
    GROUP BY the columns that may repeat, with HAVING COUNT(*) > 1.

  3. 3.Explain encapsulation with a real-life example.

    What they're checking
    OOP.
    How to answer
    An ATM - you press buttons while the process inside stays hidden; you can't change the data (balance) directly, only through methods.

  4. 4.(Non-CS) Explain a concept from your branch.

    What they're checking
    Non-CS students may be asked about their own subject.
    How to answer
    Pick a concept you know well (like Ohm's law or stress and strain) and explain it with a simple example.

  5. 5.What is the difference between a compile-time and a runtime error?

    What they're checking
    Programming basics.
    How to answer
    Compile time - before the code runs (a syntax/type mistake). Runtime - while it runs (like dividing by zero).

GD and HR

  1. 6.GD topic: 'Remote work - benefit or loss?'

    What they're checking
    Balanced thinking and communication.
    How to answer
    1-2 points on each side, an example, and your clear view. Let others speak.

  2. 7.Can you work with global teams from different cultures?

    What they're checking
    Essential at a global company.
    How to answer
    Yes - with an example: a college project with people from different backgrounds.

  3. 8.Why NTT DATA?

    What they're checking
    Research.
    How to answer
    Global IT services and the chance to learn - say what you have read.

  4. 9.How do you introduce yourself in the NTT DATA interview?

    What they're checking
    Confidence.
    How to answer
    One minute: your studies, one achievement, and why this job.

More questions

  1. 10.Give real-life uses of a queue.

    What they're checking
    Data structures.
    How to answer
    Printer jobs, a ticket line, and requests waiting at a server - FIFO.

  2. 11.What is the difference between ORDER BY and GROUP BY in SQL?

    What they're checking
    SQL basics.
    How to answer
    ORDER BY sorts rows; GROUP BY combines rows into groups (with an aggregate).

  3. 12.Tell me about a team project from your studies - what was your role?

    What they're checking
    Teamwork and contribution.
    How to answer
    The team size, your specific work, one difficulty and how it was solved.

  4. 13.How would you manage working with a global client in another time zone?

    What they're checking
    A practical question for a global company.
    How to answer
    Fix an overlap time, give clear written updates, and keep flexible hours when needed.

7-day preparation plan for the NTT DATA interview

  1. Day 1-2: Quant and logical reasoning (AMCAT style).
  2. Day 3: Verbal - grammar and reading.
  3. Day 4: Programming basics and OOP.
  4. Day 5: SQL and data structures.
  5. Day 6: GD practice and branch concepts (non-CS).
  6. Day 7: A mock test and HR answers.

Preparation tips

  • The online test is the biggest filter - give aptitude the most time.
  • If you are non-CS, prepare 3-4 core concepts from your branch well.
  • For the GD, prepare points on current topics (AI, remote work, climate).

Mistakes to avoid

  • Taking the online test lightly - it filters out the most people.
  • Being non-CS and forgetting the basics of your own branch.
  • Interrupting others in the GD.

Frequently asked questions

What is the NTT DATA online test like?

Commonly AMCAT-style - quant, logical, verbal and programming, with sectional timing.

Is there a GD at NTT DATA?

In some drives - not everywhere.

What are non-CS students asked at NTT DATA?

Reports say questions from their own branch's subjects can be asked too.

Which roles does NTT DATA offer freshers?

Commonly Graduate Engineer Trainee and Associate Software Engineer.

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