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Nippon Data Systems Software Engineer Interview Questions, Process, and Tips

Updated 1 Sep 2021

Top Nippon Data Systems Software Engineer Interview Questions and Answers

  • Q1. What is State management in ASP .Net? What is page life cycle,.
  • Q2. How much time you will take to develop a login page that can authenticate user?
  • Q3. What is abstract class and interface. What are the uses of static classes.
View all 10 questions

Nippon Data Systems Software Engineer Interview Experiences

2 interviews found

Interview Questionnaire 

10 Questions

  • Q1. What is State management in ASP .Net? What is page life cycle,.
  • Ans. 

    State management is the process of maintaining the state of controls and variables across postbacks. Page life cycle is the sequence of events that occur during the processing of a page.

    • ASP .Net provides various techniques for state management such as view state, session state, application state, and cookies.

    • View state is used to maintain the state of controls between postbacks.

    • Session state is used to maintain the sta...

  • Answered by AI
  • Q2. What is stored Procedure? Advantages of it.
  • Ans. 

    Stored Procedure is a precompiled SQL code that can be reused and executed multiple times.

    • Improves performance by reducing network traffic and server load

    • Enhances security by allowing access to only specific procedures

    • Simplifies maintenance and debugging

    • Examples: sp_insert_employee, sp_update_customer_details

  • Answered by AI
  • Q3. What is abstract class and interface. What are the uses of static classes.
  • Ans. 

    Abstract class is a class that cannot be instantiated and Interface is a blueprint of a class. Static classes are used for utility functions.

    • Abstract class is used to provide a common base for its subclasses.

    • Interface is used to define a set of methods that a class must implement.

    • Static classes are used for utility functions that do not require an instance of the class.

    • Static classes cannot be instantiated and all memb

  • Answered by AI
  • Q4. Difference between out and ref
  • Ans. 

    Out is used to return multiple values from a method while ref is used to pass a reference of a variable to a method.

    • Out parameters must be initialized inside the method before returning.

    • Ref parameters can be initialized before passing to the method.

    • Out parameters are used when a method needs to return multiple values.

    • Ref parameters are used when a method needs to modify the value of a variable passed to it.

  • Answered by AI
  • Q5. What is Polymorphism?
  • Ans. 

    Polymorphism is the ability of an object to take on many forms.

    • It allows objects of different classes to be treated as if they were objects of the same class.

    • It is achieved through method overriding and method overloading.

    • Example: A parent class Animal can have child classes like Dog, Cat, and Bird, each with their own unique implementation of the method 'makeSound'.

    • Polymorphism makes code more flexible and reusable.

  • Answered by AI
  • Q6. Difference between Overloading and overriding
  • Ans. 

    Overloading is having multiple methods with the same name but different parameters. Overriding is having a method in a subclass with the same name and parameters as in the superclass.

    • Overloading is compile-time polymorphism while overriding is runtime polymorphism.

    • Overloading is used to provide different ways of calling the same method while overriding is used to provide a specific implementation of a method in a subcl...

  • Answered by AI
  • Q7. What is View state in ASP .net?
  • Ans. 

    View state is a feature in ASP .NET that allows the state of a web page to be saved and restored between postbacks.

    • View state is used to maintain the state of server-side controls between postbacks

    • It is stored in a hidden field on the page

    • View state can be disabled to improve performance

    • View state can also be encrypted for security purposes

  • Answered by AI
  • Q8. What are Temporary table and table variable in SQL?
  • Ans. 

    Temporary table and table variable are used to store data temporarily in SQL.

    • Temporary tables are created in tempdb and are automatically dropped when the session ends.

    • Table variables are created in memory and have a limited scope.

    • Temporary tables can be used to store large amounts of data and perform complex operations.

    • Table variables are useful for storing small amounts of data and can improve performance.

    • Both can be...

  • Answered by AI
  • Q9. What is Operator overloading?
  • Ans. 

    Operator overloading is the ability to redefine operators for custom classes.

    • Allows operators to be used with user-defined types

    • Enables the use of familiar operators with custom classes

    • Can improve code readability and reduce complexity

    • Example: '+' operator can be overloaded to concatenate strings

  • Answered by AI
  • Q10. How much time you will take to develop a login page that can authenticate user?
  • Ans. 

    It depends on the complexity of the authentication process and the technology stack used.

    • I would need to understand the requirements and design of the login page.

    • I would need to know the technology stack being used.

    • If there are any existing authentication systems that can be integrated.

    • If there are any security requirements that need to be considered.

    • On average, it could take anywhere from a few hours to a few days to

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - Communicate in English and be clear on your point.
Give short answer with example

Skills evaluated in this interview

I applied via Naukri.com and was interviewed in Mar 2021. There were 4 interview rounds.

Interview Questionnaire 

1 Question

  • Q1. Related to skill written on CV.

Interview Preparation Tips

Interview preparation tips for other job seekers - Naukri.com helped me so much to achieve this work envoirnment.

Thanks to Naukri team.

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Interview Questionnaire 

1 Question

  • Q1. Questions on core java, data structures, Spring

I appeared for an interview before Mar 2021.

Round 1 - Coding Test 

(3 Questions)

Round duration - 60 minutes
Round difficulty - Medium

21 students were shortlisted from the 1st MCQ round and in this round we were asked to write the codes (function only) of 3 questions in 1 hour time.

  • Q1. 

    Rotting Oranges Problem Statement

    You are given a grid containing oranges where each cell of the grid can contain one of the three integer values:

    • 0 - representing an empty cell
    • 1 - representing a fre...
  • Ans. 

    Find the minimum time required to rot all fresh oranges in a grid.

    • Use Breadth First Search (BFS) to simulate the rotting process

    • Track the time taken to rot all oranges and return -1 if any fresh oranges remain

    • Handle edge cases like no fresh oranges or all oranges already rotten

    • Consider using a queue to efficiently process adjacent oranges

  • Answered by AI
  • Q2. 

    Majority Element Problem Statement

    Given an array/list 'ARR' consisting of 'N' integers, your task is to find the majority element in the array. If there is no majority element present, return -1.

    Exampl...

  • Ans. 

    Find the majority element in an array, return -1 if no majority element exists.

    • Iterate through the array and keep track of the count of each element using a hashmap.

    • Check if any element's count is greater than floor(N/2) to determine the majority element.

    • Return the majority element or -1 if no majority element exists.

  • Answered by AI
  • Q3. 

    Maximum Path Sum Between Two Leaves Problem Description

    You are provided with a non-empty binary tree in which each node contains a non-negative integer value. Your task is to find and return the maximum ...

  • Ans. 

    Find the maximum path sum between two leaf nodes in a binary tree.

    • Traverse the tree to find the maximum path sum between two leaf nodes.

    • Keep track of the maximum sum found so far.

    • Consider all possible paths between leaf nodes.

    • Handle cases where the tree has only a single leaf node.

    • Implement a recursive function to calculate the maximum path sum.

  • Answered by AI
Round 2 - Face to Face 

(3 Questions)

Round duration - 60 minutes
Round difficulty - Medium

This was a technical round with DSA based questions.

  • Q1. 

    N-th Node From The End Problem Statement

    You are given a Singly Linked List of integers. The task is to find the N-th node from the end of the list.

    Example:

    Input:
    If the given list is (1 -> -2 -&g...
  • Ans. 

    Find the N-th node from the end of a Singly Linked List of integers.

    • Traverse the list to find the length L of the list.

    • Calculate the position of the N-th node from the beginning as L - N + 1.

    • Traverse the list again to reach the calculated position and return the node's value.

  • Answered by AI
  • Q2. 

    LCA of Binary Tree Problem Statement

    You are given a binary tree consisting of distinct integers and two nodes, X and Y. Your task is to find and return the Lowest Common Ancestor (LCA) of these two nodes...

  • Ans. 

    Find the Lowest Common Ancestor (LCA) of two nodes in a binary tree.

    • Traverse the binary tree to find the paths from the root to nodes X and Y.

    • Compare the paths to find the last common node, which is the LCA.

    • Handle cases where one node is an ancestor of the other or when one node is the LCA itself.

  • Answered by AI
  • Q3. 

    Reverse Words in a String: Problem Statement

    You are given a string of length N. Your task is to reverse the string word by word. The input may contain multiple spaces between words and may have leading o...

  • Ans. 

    Reverse words in a string while handling leading/trailing spaces and multiple spaces between words.

    • Split the input string by spaces to get individual words

    • Reverse the list of words

    • Join the reversed words with a single space in between

    • Handle leading/trailing spaces by stripping them before and after reversing

  • Answered by AI
Round 3 - Face to Face 

(3 Questions)

Round duration - 60 minutes
Round difficulty - Easy

Technical Interview round with questions based on DSA

  • Q1. 

    Minimum Time To Solve The Problems

    Given 'N' subjects, each containing a certain number of problems, and 'K' friends, assign subjects to friends such that each subject goes to exactly one friend, maintain...

  • Ans. 

    Assign subjects to friends to minimize maximum workload, find minimum time for most loaded friend.

    • Sort subjects in descending order

    • Assign subjects to friends one by one until all subjects are assigned

    • The maximum workload will be the sum of problems assigned to the friend with the most problems

    • Return the maximum workload as the minimum time required

  • Answered by AI
  • Q2. What is grammar in the context of compiler design?
  • Ans. 

    Grammar in compiler design defines the syntax and structure of a programming language.

    • Grammar specifies the rules for forming valid statements in a programming language.

    • It consists of a set of production rules that define how valid programs can be constructed.

    • There are different types of grammars such as context-free grammar, regular grammar, etc.

    • Example: In C programming language, the grammar specifies that a for loop...

  • Answered by AI
  • Q3. What is a token in compiler design?
  • Ans. 

    A token in compiler design is a basic unit of syntax that the compiler can understand and process.

    • Tokens are the smallest units of a program that are meaningful to the compiler.

    • Examples of tokens include keywords, identifiers, operators, and punctuation symbols.

    • Tokens are generated by the lexical analysis phase of the compiler.

    • Tokens are used by the parser to build the abstract syntax tree of the program.

  • Answered by AI
Round 4 - Video Call 

(3 Questions)

Round duration - 60 minutes
Round difficulty - Easy

Technical round with questions on DSA and Compiler Design mainly. He told me that you’ll be having your final HR round in some time. I knew that I was going well because he seemed to be quite satisfied with my answers.

  • Q1. 

    Sum Root to Leaf Numbers

    You are given an arbitrary binary tree consisting of N nodes, each associated with an integer value from 1 to 9. Each root-to-leaf path can be considered a number formed by concat...

  • Ans. 

    Find the total sum of all root to leaf paths in a binary tree formed by concatenating node values.

    • Traverse the binary tree from root to leaf nodes, keeping track of the current path sum

    • Add the current path sum to the total sum when reaching a leaf node

    • Use modulo (10^9 + 7) to handle large outputs

  • Answered by AI
  • Q2. What is a regular language?
  • Ans. 

    A regular language is a language that can be recognized by a finite automaton.

    • Regular languages can be described by regular expressions.

    • Regular languages are closed under union, concatenation, and Kleene star operations.

    • Examples of regular languages include the set of all strings over an alphabet that contain an even number of 'a's.

  • Answered by AI
  • Q3. What are NP and NP-Hard problems?
  • Ans. 

    NP problems are decision problems that can be verified in polynomial time, while NP-Hard problems are at least as hard as the hardest problems in NP.

    • NP problems can be verified in polynomial time but not necessarily solved in polynomial time.

    • NP-Hard problems are at least as hard as the hardest problems in NP, but may not be in NP themselves.

    • Examples of NP problems include the subset sum problem and the traveling salesm...

  • Answered by AI
Round 5 - HR 

Round duration - 30 minutes
Round difficulty - Easy

That was the round for which I’ve been waiting for hours 
She was very friendly and nice to talk to. It didn’t seem that I was talking to the HR. It was more like talking to a friend. Finally we discussed about the pay-scale and work culture in Accolite.

Interview Preparation Tips

Eligibility criteriaAbove 7 CGPAAccolite Digital Pvt Ltd interview preparation:Topics to prepare for the interview - Data Structures, Algorithms, System Design, Aptitude, OOPSTime required to prepare for the interview - 6 monthsInterview preparation tips for other job seekers

Tip 1 : Must do Previously asked Interview as well as Online Test Questions.
Tip 2 : Go through all the previous interview experiences from Codestudio and Leetcode.
Tip 3 : Do at-least 2 good projects and you must know every bit of them.

Application resume tips for other job seekers

Tip 1 : Have at-least 2 good projects explained in short with all important points covered.
Tip 2 : Every skill must be mentioned.
Tip 3 : Focus on skills, projects and experiences more.

Final outcome of the interviewSelected

Skills evaluated in this interview

I applied via Recruitment Consulltant and was interviewed before Apr 2021. There was 1 interview round.

Round 1 - Technical 

(2 Questions)

  • Q1. Different types of No SQL DBs
  • Ans. 

    NoSQL databases are non-relational databases that store and retrieve data in a non-tabular format.

    • Document-oriented databases (MongoDB, Couchbase)

    • Key-value stores (Redis, Riak)

    • Column-family stores (Cassandra, HBase)

    • Graph databases (Neo4j, OrientDB)

  • Answered by AI
  • Q2. Different types of scaling
  • Ans. 

    Scaling refers to the process of increasing or decreasing the capacity of a system to handle more or less load.

    • Vertical Scaling: Adding more resources to a single node

    • Horizontal Scaling: Adding more nodes to a system

    • Load Balancing: Distributing the load across multiple nodes

    • Database Sharding: Splitting a database into smaller parts to distribute the load

    • Caching: Storing frequently accessed data in memory for faster acc

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - Focus on Problem solving. Have a good understanding on main concepts of DSA. Java technical side is just as same as other companies. Also if you are applying for senior positions. Prepare for System Design rounds

Skills evaluated in this interview

I applied via Recruitment Consultant and was interviewed in May 2019. There were 3 interview rounds.

Interview Questionnaire 

1 Question

  • Q1. Technical questions & team leading

Interview Preparation Tips

Interview preparation tips for other job seekers - Interview is not difficult..

I applied via Approached by Company and was interviewed before Apr 2021. There were 2 interview rounds.

Round 1 - Resume Shortlist 
Pro Tip by AmbitionBox:
Keep your resume crisp and to the point. A recruiter looks at your resume for an average of 6 seconds, make sure to leave the best impression.
View all tips
Round 2 - Technical 

(1 Question)

  • Q1. Basic front-end questions

Interview Preparation Tips

Interview preparation tips for other job seekers - Good company with work life balance

I applied via Campus Placement and was interviewed in Oct 2020. There were 4 interview rounds.

Interview Questionnaire 

2 Questions

  • Q1. Oncampus,4Rounds-APTI+Tech,PI,HR,MR,results declared within 2 weeks
  • Q2. Basic apti with two programs, questions realted to project

Interview Preparation Tips

Interview preparation tips for other job seekers - Basic easy programs and apti ,HR and MR also asked tech question mostly on oops and dbms

I applied via Naukri.com and was interviewed in Nov 2020. There were 5 interview rounds.

Interview Questionnaire 

2 Questions

  • Q1. Everything on java spring sql
  • Q2. Don’t waste your time as i did

Interview Preparation Tips

Interview preparation tips for other job seekers - Do not waste your precious time because they will not give you offer more than your current ctc.

I applied via Campus Placement and was interviewed before Jul 2021. There were 5 interview rounds.

Round 1 - Aptitude Test 

Round 1 was about 60 mins long. Basic Aptitude questions along with Programming MCQ

Round 2 - Coding Test 

Round 2 had 2 coding questions with a time limit of 60mins. Intermediate level problem solving
knowledge is neccessary.

Round 3 - Technical 

(1 Question)

  • Q1. Technical Round 1 was 1hr long. Detailed Insights about my project and a few programming questions in DSA
Round 4 - Technical 

(1 Question)

  • Q1. This Technical Round 2 was 1hr long and was mainly focused on problem solving skills and a few basic programming concepts.
Round 5 - HR 

(1 Question)

  • Q1. Three Situational questions were asked .

Interview Preparation Tips

Topics to prepare for Bounteous x Accolite Software Developer interview:
  • Data Structures
  • Algorithms
  • CPP
  • Problem Solving
Interview preparation tips for other job seekers - Prepare Well . Perform well with full confidence

Nippon Data Systems Interview FAQs

How to prepare for Nippon Data Systems Software Engineer interview?
Go through your CV in detail and study all the technologies mentioned in your CV. Prepare at least two technologies or languages in depth if you are appearing for a technical interview at Nippon Data Systems. The most common topics and skills that interviewers at Nippon Data Systems expect are C++, Python, C#, Perl and QT.
What are the top questions asked in Nippon Data Systems Software Engineer interview?

Some of the top questions asked at the Nippon Data Systems Software Engineer interview -

  1. What is State management in ASP .Net? What is page life cycl...read more
  2. How much time you will take to develop a login page that can authenticate us...read more
  3. What is abstract class and interface. What are the uses of static class...read more

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Nippon Data Systems Software Engineer Salary
based on 47 salaries
₹3.5 L/yr - ₹9 L/yr
32% less than the average Software Engineer Salary in India
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Nippon Data Systems Software Engineer Reviews and Ratings

based on 5 reviews

3.8/5

Rating in categories

3.4

Skill development

3.8

Work-life balance

3.2

Salary

2.2

Job security

3.4

Company culture

3.3

Promotions

3.4

Work satisfaction

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