Niveus Solution Software Development Engineer Interview Questions and Answers

Round 1 -> 3 easy coding questions (I did all three)
round2 -> 2 coding questions (1 was leetcode's trapping rainwater problem) (Did 1.5)

Q1. SQL query was asked on joins etc
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Q2. What are Microservcies, solid principles, a pattern printing question, oops concepts
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Q1. Designing dbms for a college website
Ans. 
Designing a DBMS for a college website involves creating tables for students, courses, faculty, and more.
• Create tables for students, courses, faculty, departments, etc.

• Establish relationships between tables using foreign keys.

• Include attributes like student ID, course ID, faculty ID, etc.

• Implement normalization to reduce redundancy and improve data integrity.

• Consider implementing views for complex queries or reports.
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Q2. Implement debouncing, create a nodejs server with a get / post api, a puzzle, javascript questions like clousers, let / var / const, event loop, output based questions etc.
Ans. 
Implement debouncing, create a nodejs server with get/post api, and answer JavaScript questions.
• Implement debouncing by using setTimeout and clearTimeout to limit the number of times a function is called.

• Create a nodejs server with Express framework to handle get and post requests.

• Answer JavaScript questions on closures, let/var/const, event loop, and output based questions.

• Provide examples for each concept to demonstr
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Coding test was really good it was easier to tackle the problem and writting code for it.

Q1. Can you tell me about yourself?
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Q2. What is the major project you have worked on, and can you provide an explanation of it?
Ans. 
Developed a web-based project management tool for tracking tasks and deadlines.
• Used React.js for front-end development

• Implemented RESTful APIs using Node.js and Express

• Utilized MongoDB for database storage

• Incorporated authentication and authorization features for user security
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Q1. SQL ques and concept
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2 coding questions and 25 mcqs

Q1. SQL Related questions
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Q2. Asp.net related questions basic
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Leet code medium level question

Q1. About Java Streams
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Q2. Restful API coding completion based on given file
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Q1. To check your attitude
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Q2. Given detailed about company and what project you are going to work on?
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Q1. Hashmap working
Ans. 
Hashmap is a data structure that stores key-value pairs and allows for fast retrieval of values based on keys.
• Hashmap uses a hashing function to map keys to indices in an array.

• It allows for constant time complexity O(1) for insertion, deletion, and retrieval operations.

• Example: HashMap<String, Integer> map = new HashMap<>(); map.put("key", 123); int value = map.get("key");
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Q2. Multithreading cases
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Q3. Scenario specific on how to handle multiple events on a single variable to have accurate result
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Q4. Database indexing
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Q5. Architecture level
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Simple topic u have to speak on that

Dont know why they are taking multiple gds

Q1. Live coding basic dsa
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Q2. Basic dsa live coding
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Q1. Springboot notations
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Q2. How to handle multiple request on springboot
Ans. 
Use thread pooling and asynchronous processing to handle multiple requests efficiently in Spring Boot.
• Implement thread pooling to manage multiple requests concurrently.

• Use asynchronous processing to handle requests without blocking the main thread.

• Consider using reactive programming with Spring WebFlux for better scalability.

• Optimize database queries and external API calls to reduce response times.

• Implement caching mec...read more
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Q1. Do you have working experience of SwiftUI
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Q2. Have you ever implemented or worked with server driven UIs
Ans. 
Yes, I have experience implementing server driven UIs.
• Implemented server driven UIs using JSON responses to dynamically update UI elements

• Worked with frameworks like React and Angular to handle server driven UI updates

• Used server driven UIs to efficiently manage and display large amounts of data
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Q1. What is closure and types?
Ans. 
Closure is a function that captures variables from its surrounding scope, allowing it to access those variables even after the scope has closed.
• Closure allows a function to access variables from its lexical scope even after the function has finished executing.

• Types of closures include lexical closures, which capture variables from the surrounding lexical scope, and function closures, which capture variables from the fu...read more
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Q2. What is Core data and all operations with example/scenarios
Ans. 
Core Data is a framework provided by Apple for managing the model layer objects in an iOS application.
• Core Data is used for storing, retrieving, and managing data in an iOS app.

• It provides an object-oriented interface to work with data.

• Operations include creating, reading, updating, and deleting data.

• Example: Creating a new record in Core Data for a user profile.

• Example: Fetching a list of items from Core Data to displ
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Q1. Why you want to join the company?
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Q2. Why should we hire you
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