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NASSCOM Database Developer Interview Questions and Answers
NASSCOM Database Developer Interview Experiences
1 interview found
Selected
I applied via Company Website and was interviewed before Jan 2023. There were 3 interview rounds.
Reasoning.. Puzzel solving etc
(3 Questions)
- Q1. What is data structure?
- Ans.
Data structure is a way of organizing and storing data in a computer so that it can be accessed and manipulated efficiently.
Data structure defines the relationship between data elements and the operations that can be performed on them.
It helps in optimizing the use of memory and improving the efficiency of algorithms.
Examples of data structures include arrays, linked lists, stacks, queues, trees, and graphs.
- Q2. Did you know how to work on hadoop?
- Ans.
Yes, I have experience working on Hadoop.
I have worked on Hadoop for data processing and analysis.
I am familiar with Hadoop's distributed file system (HDFS) and MapReduce framework.
I have used Hadoop to handle large volumes of data and perform complex computations.
I have experience with Hadoop ecosystem tools like Hive, Pig, and Spark.
I have optimized Hadoop jobs for performance and scalability.
I have worked on Hadoop ...
- Q3. Do you know about cluster?
- Ans.
Yes, a cluster is a group of servers or computers that work together to provide high availability and scalability.
A cluster is used to distribute the workload and improve performance.
It provides redundancy and fault tolerance by allowing one server to take over if another fails.
Clusters can be used in various applications like database systems, web servers, and high-performance computing.
Examples of cluster technologie...
(3 Questions)
- Q1. Where do you live in?
- Q2. How many members r there in your family?
- Ans. 3.. My mom dad and me
- Q3. Are u able to relocate for tour job ?
Interview Preparation Tips
Skills evaluated in this interview
Interview questions from similar companies
Anonymous
I applied via Walk-in and was interviewed before Dec 2020. There were 3 interview rounds.
Interview Questionnaire
3 Questions
- Q1. Basic Programming questions.
- Q2. Fibonacci program
- Q3. OOPS concepts.
Interview Preparation Tips
I applied via Naukri.com and was interviewed in Aug 2020. There were 3 interview rounds.
Interview Questionnaire
1 Question
- Q1. Oops Concepts and Data Structure Questions.
Interview Preparation Tips
I applied via Campus Placement and was interviewed before Feb 2020. There were 6 interview rounds.
Interview Questionnaire
4 Questions
- Q1. Was interviewed as fresher?
- Q2. Written test conducted? with verbal ability test ? GD
- Q3. How would u deal with a problematic situation when you are working in a team?
- Q4. What are your plans about higher studies?
Interview Preparation Tips
Interview Questionnaire
2 Questions
- Q1. They asked me on java and I have joined as a fresher they not much questions as I got selected as fresher on oops concepts and collections
- Q2. Please be confident while facing interview and they will check your communication skills
I applied via Company Website and was interviewed before Feb 2020. There was 1 interview round.
Interview Questionnaire
2 Questions
- Q1. They asked about dbms questions in the form of table formate
- Q2. They asked code for some python program
Interview Preparation Tips
I applied via Campus Placement and was interviewed in Oct 2020. There were 4 interview rounds.
Interview Questionnaire
5 Questions
- Q1. Wap of bubble sort
- Ans.
Bubble sort is a simple sorting algorithm that repeatedly steps through the list, compares adjacent elements and swaps them if they are in the wrong order.
Start from the first element and compare it with the next element
If the next element is smaller, swap them
Repeat this process for all elements in the array
Continue this process until no more swaps are needed
- Q2. Wap of prime number
- Ans.
A program to print all prime numbers
Take input from user for range of numbers
Loop through the range and check if each number is prime
Print the prime numbers
- Q3. What is hashmap?
- Ans.
Hashmap is a data structure that stores key-value pairs and allows constant time access to values based on their keys.
Hashmap uses a hash function to map keys to indices in an array.
Collisions can occur when multiple keys map to the same index, which can be resolved using techniques like chaining or open addressing.
Examples of hashmap implementations include Java's HashMap class and Python's dict type.
- Q4. What is inheritance
- Ans.
Inheritance is a mechanism in object-oriented programming where a new class is created by inheriting properties of an existing class.
Inheritance allows code reuse and promotes code organization.
The existing class is called the parent or superclass, and the new class is called the child or subclass.
The child class inherits all the properties and methods of the parent class and can also add new properties and methods.
For...
- Q5. Call by value and call by reference
Interview Preparation Tips
Skills evaluated in this interview
I applied via Walk-in and was interviewed in Mar 2021. There was 1 interview round.
Interview Questionnaire
1 Question
- Q1. Introduction your self in interview
Interview Preparation Tips
Selected
I applied via Campus Placement and was interviewed before Dec 2021. There were 2 interview rounds.
Basic logical reasoning and verbal questions . Easy to clear
(2 Questions)
- Q1. 1.Tell me about yourself? 2.What are Your achievements?
- Q2. 3. Your strengths? 4. How did you face a situation using your key skills?
Interview Preparation Tips
Interview Questionnaire
1 Question
- Q1. About my college projects and about my passion
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