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Top Vitwit Interview Questions and Answers
- Q1. What is blockchain and applicationsasked in Software Developer interview
- Q2. Opps concepts in pythonasked in Associate Software Engineer interview
- Q3. Integer to Roman numberasked in Software Engineer interview
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3 interviews found
Associate Software Engineer Interview Questions & Answers
Bhavana Adhikari G10 FSD
posted on 6 Feb 2024
I applied via Campus Placement and was interviewed in Aug 2023. There was 1 interview round.
(4 Questions)
- Q1. Opps concepts in python
- Ans.
Object-oriented programming concepts in Python
Encapsulation: bundling data and methods together in a class
Inheritance: creating new classes from existing ones
Polymorphism: using a single interface to represent different types
Abstraction: hiding complex implementation details
Class: blueprint for creating objects
Object: instance of a class
- Q2. OS and CN concepts
- Q3. Python data types
- Q4. Page replacement methods in os
- Ans.
Page replacement methods are algorithms used by operating systems to decide which pages to evict from memory when a new page needs to be loaded.
Page replacement methods are used in virtual memory systems to manage limited physical memory.
The goal is to minimize the number of page faults, which occur when a requested page is not in memory.
Popular page replacement algorithms include FIFO (First-In, First-Out), LRU (Least...
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Skills evaluated in this interview
Associate Software Engineer Interview Questions asked at other Companies
Anonymous
Given 5 coding questions and 20 subject oriented questions on ComputerNetworks,Operating Systems and so on
(2 Questions)
- Q1. Technical Interview followed by logic explanation of a coding question
- Q2. Integer to Roman number
- Ans.
Convert integer to Roman numeral representation
Create a mapping of integer values to Roman numeral symbols
Iterate through the mapping in descending order of integer values
Subtract the largest possible integer value from the input number and append the corresponding Roman numeral symbol
Skills evaluated in this interview
Software Engineer Interview Questions asked at other Companies
Jahnavi Thota
I applied via Campus Placement and was interviewed in Aug 2022. There were 2 interview rounds.
Sudo codes were asked to wite the output
(6 Questions)
- Q1. Intduction was asked firstly
- Q2. Had any knowledge on blockchain
- Ans.
Yes, I have knowledge on blockchain.
I have experience in developing smart contracts using Solidity.
I have worked on blockchain platforms like Ethereum and Hyperledger Fabric.
I understand the concepts of distributed ledger technology and consensus algorithms.
I am familiar with the security aspects of blockchain and how to prevent attacks like 51% attack.
I have implemented blockchain solutions for supply chain management
- Q3. What is blockchain and applications
- Ans.
Blockchain is a decentralized, secure and transparent digital ledger that records transactions and stores data.
Blockchain is used in cryptocurrency transactions like Bitcoin and Ethereum.
It can also be used in supply chain management, voting systems, and digital identity verification.
Blockchain provides security through cryptography and consensus algorithms.
It eliminates the need for intermediaries and reduces transact...
- Q4. In java what is hashmap
- Ans.
HashMap is a class in Java that implements the Map interface and stores key-value pairs in a hash table.
HashMap allows null values and only one null key.
It provides constant-time performance for basic operations such as get and put.
The order of elements in a HashMap is not guaranteed.
Example: HashMap
- Q5. In os job shechduling algo
- Q6. Whats are hashtables
- Ans.
Hashtables are data structures that store key-value pairs and allow for fast retrieval of values based on their keys.
Hashtables use 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.
Hashtables have an average time complexity of O(1) for insertion, deletion, and retrieval of values.
Exam...
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Skills evaluated in this interview
Software Developer Interview Questions asked at other Companies
Top trending discussions
Interview questions from similar companies
I applied via campus placement at Vidya Jyothi Institute of Technology, Hyderabad and was interviewed in Dec 2024. There were 3 interview rounds.
Its was moderate , basic questions and can written based on the cluster
It was easy its an combination of aptitude and gaming questions
(11 Questions)
- Q1. What is Java, and why is it considered platform-independent?
- Ans.
Java is a programming language known for its platform independence due to its ability to run on any device with a Java Virtual Machine (JVM).
Java is a high-level programming language developed by Sun Microsystems.
It is considered platform-independent because Java programs are compiled into bytecode that can run on any device with a JVM.
JVM acts as an interpreter that translates the bytecode into machine code specific t...
- Q2. What are the differences between method overloading and method overriding?
- Ans.
Method overloading involves multiple methods in the same class with the same name but different parameters. Method overriding involves a subclass providing a specific implementation of a method that is already provided by its superclass.
Method overloading is resolved at compile time based on the method signature, while method overriding is resolved at runtime based on the object type.
Method overloading is used to incre...
- Q3. What is the program for checking if a string is a palindrome?
- Ans.
A program to check if a string is a palindrome involves comparing the string with its reverse.
Iterate through the string from both ends and compare characters.
If all characters match, the string is a palindrome.
Examples: 'radar' is a palindrome, 'hello' is not.
- Q4. Program for checking if given number is prime or not ?
- Ans.
A program to check if a given number is prime or not.
Iterate from 2 to square root of the number and check for divisibility
If the number is divisible by any number other than 1 and itself, it is not prime
Optimization: Check divisibility only up to square root of the number
- Q5. What are the different types of Structured query Languages (SqL)?
- Ans.
Different types of SQL include MySQL, PostgreSQL, SQLite, Oracle SQL, and Microsoft SQL Server.
MySQL - widely used open-source SQL database management system
PostgreSQL - advanced open-source SQL database management system
SQLite - self-contained, serverless, zero-configuration SQL database engine
Oracle SQL - proprietary SQL database management system by Oracle Corporation
Microsoft SQL Server - relational database manage
- Q6. Given an scenario to write sql query ?
- Q7. An aptitude question based on time and work
- Q8. What is the code for calculating the length of a rectangle given its breadth and area?
- Ans.
The code for calculating the length of a rectangle given its breadth and area involves dividing the area by the breadth.
Calculate length = Area / Breadth
For example, if the breadth is 5 and the area is 20, then the length would be 20 / 5 = 4
- Q9. What are the different types of data types in Java?
- Ans.
Java has primitive data types (int, double, boolean, etc.) and reference data types (arrays, classes, interfaces, etc.)
Primitive data types include int, double, boolean, char, etc.
Reference data types include arrays, classes, interfaces, etc.
Examples: int num = 10; double price = 19.99; boolean isTrue = true; String name = "John";
- Q10. What are the differences between the Java Virtual Machine (JVM), Java Runtime Environment (JRE), and Java Development Kit (JDK)?
- Ans.
JVM executes Java bytecode, JRE includes JVM and libraries, JDK includes JRE and development tools.
JVM is responsible for executing Java bytecode and providing a runtime environment.
JRE includes JVM along with libraries and other components necessary to run Java applications.
JDK includes JRE and development tools like compilers and debuggers for creating Java applications.
JDK is required for developing Java application...
- Q11. What is a primary key in SQL?
- Ans.
A primary key in SQL is a unique identifier for each record in a table.
Primary key ensures each record in a table is unique
It can be a single column or a combination of columns
Primary key values cannot be NULL
Example: 'id' column in a 'users' table
Senior Software Engineer 2 Interview Questions & Answers
Synechron
Germanpreet Singh
posted on 4 Jan 2025
Selected
I applied via Naukri.com and was interviewed in Dec 2024. There were 2 interview rounds.
(2 Questions)
- Q1. What is the Singleton pattern ? in how many ways can this pattern be broken ?
- Ans.
Singleton pattern ensures a class has only one instance and provides a global point of access to it.
Singleton pattern can be implemented by making the constructor private and providing a static method to access the instance.
The pattern can be broken by using reflection to access the private constructor and create multiple instances.
Another way to break the Singleton pattern is by using multiple class loaders in Java.
Th...
- Q2. What is the internal implementation of hashmap? Let's assume that you want to store duplicate keys in the hashmap, how can we achieve the same in hashmap ?
- Ans.
HashMap internally uses an array of linked lists to store key-value pairs. To store duplicate keys, we can use a custom implementation of HashMap.
HashMap internally uses an array of linked lists to handle collisions.
To store duplicate keys, we can create a custom HashMap implementation that allows multiple values for the same key.
One approach is to use a HashMap with values as lists, where each key can have multiple va
(2 Questions)
- Q1. What microservices patterns are you aware ? let's assume that there is a microservice based architecture and service A is calling service B which in turn service C. If service b fails, how will you manage ...
- Ans.
Use compensating transactions and distributed tracing for managing transaction and logging in case of service B failure.
Implement compensating transactions to rollback changes made by service B in case of failure.
Use distributed tracing to track the flow of requests and identify where the failure occurred.
Implement retry mechanisms to handle transient failures in service B.
Use circuit breakers to prevent cascading fail...
- Q2. System Design question : Design a booking wesite for.eg: bookin.com ?
Software Developer Interview Questions & Answers
Virtusa Consulting Services
Bhuvaneswari majji
posted on 3 Jan 2025
I applied via Referral and was interviewed in Dec 2024. There were 2 interview rounds.
(3 Questions)
- Q1. Run time polymorphism code
- Q2. Linked list code
- Q3. Deep copy shallow copy differences
- Ans.
Deep copy creates a new copy of an object with its own unique memory space, while shallow copy creates a new object that references the same memory locations as the original object.
Deep copy duplicates all nested objects, while shallow copy only duplicates the references to nested objects.
Deep copy ensures that changes to the copied object do not affect the original object, while shallow copy may lead to unintended sid...
(2 Questions)
- Q1. More deep questions about polymorphism code
- Q2. Code for interchange of strings without strcpy
- Ans.
Use a loop to swap characters of two strings without using strcpy function.
Create two arrays of characters to store the strings
Use a loop to iterate through each character of the strings and swap them
Ensure to handle cases where strings have different lengths
Interview Preparation Tips
Selected
I applied via campus placement at J S S Academy of Technical Education, Bangalore and was interviewed in Dec 2024. There were 3 interview rounds.
Average to easy difficulty level.
(3 Questions)
- Q1. Java code of string manipulation
- Ans.
String manipulation in Java involves various methods like substring, concat, replace, etc.
Use substring() to extract a part of the string
Use concat() to concatenate two strings
Use replace() to replace a specific character or substring in a string
- Q2. What is the Java code for various types of sorting algorithms?
- Ans.
Various sorting algorithms in Java code
Bubble Sort: int[] arr = {5, 2, 8, 1, 3}; Arrays.sort(arr);
Selection Sort: int[] arr = {5, 2, 8, 1, 3}; Arrays.sort(arr);
Insertion Sort: int[] arr = {5, 2, 8, 1, 3}; Arrays.sort(arr);
Merge Sort: int[] arr = {5, 2, 8, 1, 3}; Arrays.sort(arr);
Quick Sort: int[] arr = {5, 2, 8, 1, 3}; Arrays.sort(arr);
- Q3. Sql query and topics related to joins.
(4 Questions)
- Q1. About yourself and family
- Q2. What do you know about the company?
- Ans.
The company is a leading software development firm specializing in creating innovative solutions for various industries.
Specializes in creating innovative software solutions
Works with clients from various industries
Known for high-quality and reliable products
Has a strong team of software engineers and developers
- Q3. Can you provide examples of real-life scenarios where you handled conflicts with either a colleague or a manager?
- Ans.
Handled conflicts by addressing issues directly, seeking compromise, and maintaining professionalism.
Addressed a disagreement with a colleague by scheduling a one-on-one meeting to discuss concerns and find common ground.
Resolved a conflict with a manager by actively listening to their perspective, providing feedback, and working together to find a solution.
Maintained professionalism during conflicts by staying calm, r...
- Q4. What actions would you take if your manager does not approve your product idea, and how would you attempt to persuade them?
- Ans.
I would gather more data to support my idea, present a compelling case to my manager, and be open to feedback and compromise.
Gather data to support the idea, such as market research, user feedback, or cost-benefit analysis.
Prepare a well-structured presentation highlighting the potential benefits of the product idea.
Listen to the manager's concerns and feedback, and be open to making adjustments or compromises.
Seek sup...
Interview Preparation Tips
RISHABH Pal
Selected
I applied via Naukri.com and was interviewed in Nov 2024. There were 2 interview rounds.
The Aptitude Test session accesses mathematical and logical reasoning abilities
(6 Questions)
- Q1. What is Vlookup
- Ans.
Vlookup is a function in Excel used to search for a value in a table and return a corresponding value from another column.
Vlookup stands for 'Vertical Lookup'
It is commonly used in Excel to search for a value in the leftmost column of a table and return a value in the same row from a specified column
Syntax: =VLOOKUP(lookup_value, table_array, col_index_num, [range_lookup])
Example: =VLOOKUP(A2, B2:D10, 3, FALSE) - searc...
- Q2. Some IF else Question in Excel
- Q3. What does your day in your previous organization look like?
- Ans.
My day in my previous organization involved analyzing large datasets, creating reports, and presenting findings to stakeholders.
Reviewing and cleaning large datasets to ensure accuracy
Creating visualizations and reports to communicate insights
Collaborating with team members to identify trends and patterns
Presenting findings to stakeholders in meetings or presentations
- Q4. Could you share the technical skills you possess?
- Ans.
I possess strong technical skills in data analysis, including proficiency in programming languages, statistical analysis, and data visualization tools.
Proficient in programming languages such as Python, R, SQL
Skilled in statistical analysis and data modeling techniques
Experience with data visualization tools like Tableau, Power BI
Knowledge of machine learning algorithms and techniques
- Q5. Can you explain what a Pivot Table is?
- Ans.
A Pivot Table is a data summarization tool used in spreadsheet programs to analyze, summarize, and present data in a tabular format.
Pivot tables allow users to reorganize and summarize selected columns and rows of data to obtain desired insights.
Users can easily group and filter data, perform calculations, and create visualizations using pivot tables.
Pivot tables are commonly used in Excel and other spreadsheet program...
- Q6. Find the Highest-paid employee in each department along with their salary and department name.
- Ans.
To find the highest-paid employee in each department, we need to group employees by department and then select the employee with the highest salary in each group.
Group employees by department
Find the employee with the highest salary in each group
Retrieve the employee's name, salary, and department name
Interview Preparation Tips
- SQL
- Excel
- Problem Solving
- PowerBI
- SQL Queries
Be prepared to discuss past challenges and how did you overcome.
Selected
(5 Questions)
- Q1. HTML, CSS fundamentals
- Q2. Javascript event loop and array methods
- Q3. Javascript coding for operation on object array
- Ans.
Performing operations on an array of objects using JavaScript.
Use array methods like map, filter, reduce for operations on object array.
Access object properties using dot notation or bracket notation.
Iterate through the array using loops like for loop or forEach method.
Example: Calculate total sum of 'price' property in an array of products.
- Q4. React benefits and Redux implementations
- Q5. How to create slice and combine reducers
- Ans.
To create slice and combine reducers in React, use the createSlice and combineReducers functions from Redux toolkit.
Use createSlice function to define a slice of state with reducers and actions.
Example: const counterSlice = createSlice({ name: 'counter', initialState: 0, reducers: { increment: state => state + 1, decrement: state => state - 1 } })
Use combineReducers function to combine multiple slices into a sing...
(2 Questions)
- Q1. Questions based on projects, role, responsibilities and initiative at work place
- Q2. How to create and optimize a react application
- Ans.
To create and optimize a React application, focus on efficient component structure, state management, code splitting, lazy loading, and performance monitoring.
Use functional components and hooks for better performance.
Implement state management with tools like Redux or Context API.
Split code into smaller chunks and lazy load components for faster initial load times.
Optimize performance by minimizing re-renders and usin...
(1 Question)
- Q1. Day to day activity of workplace and salary negotiation
- Ans.
Day to day activities involve coding, debugging, testing, collaborating with team members. Salary negotiation involves research, preparation, and effective communication.
Coding and developing new features
Debugging and fixing issues
Testing code for quality assurance
Collaborating with team members for project progress
Researching market rates for salary negotiation
Preparing a strong case for desired salary
Effectively comm
Vishwajit Kumar
I was interviewed in Dec 2024.
(2 Questions)
- Q1. Windows function-related questions.
- Q2. Join Related Questions.
(2 Questions)
- Q1. Join related Questions
- Q2. Subqueries related queations.
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