Quinbay Software Engineer Intern Interview Questions and Answers

Basic JavaScript output-based questions were presented in the form of multiple-choice questions (MCQs).

Q1. What is custom diractives in Angular
Ans. 
Custom directives in Angular allow you to create reusable components with custom behavior.
• Custom directives are used to extend the functionality of HTML elements in Angular.

• They can be used to create reusable components with custom behavior.

• Directives are markers on a DOM element that tell Angular to attach a specified behavior to that DOM element or even transform the DOM element and its children.

• Examples include crea...read more
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Q2. What is pipes in Angular
Ans. 
Pipes in Angular are used for transforming data in templates.
• Pipes are used to format data before displaying it in the view.

• They can be used to filter, sort, or transform data in various ways.

• Examples include currency, date, uppercase, and lowercase pipes.
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Q3. What is interceptor in Angular
Ans. 
An interceptor in Angular is a service that can be used to intercept and modify HTTP requests and responses.
• Interceptors can be used to add headers, modify requests, handle errors, etc.

• They are implemented as classes that implement the HttpInterceptor interface.

• Interceptors are added to the HttpClientModule providers array in the app module.

• Example: LoggingInterceptor implements HttpInterceptor to log all HTTP requests
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Q1. Do you know writing Unit test case?
Ans. 
Yes, I am familiar with writing unit test cases to ensure code quality and functionality.
• I have experience writing unit test cases using testing frameworks like JUnit, NUnit, or pytest.

• I understand the importance of writing testable code and creating comprehensive test suites.

• I can write test cases to cover different scenarios, including edge cases and boundary conditions.

• I know how to use mocking frameworks like Mocki...read more
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Q2. What state management library do you have used?
Ans. 
I have used Redux for state management in my previous projects.
• Redux is a predictable state container for JavaScript apps.

• It helps in managing the state of the application in a single immutable state tree.

• Actions are dispatched to update the state and components can subscribe to changes.

• Selectors can be used to efficiently extract data from the state tree.

• Middleware can be added to handle asynchronous actions.

• Example:
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Q1. What is your expected Salary?
Ans. 
My expected salary is based on my experience, skills, and the market rate for Software Development Engineers.
• Research the average salary for Software Development Engineers in the specific location and industry

• Consider your years of experience and level of expertise

• Factor in any additional benefits or perks offered by the company

• Be prepared to negotiate based on the job responsibilities and requirements
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Q2. How soon would you be able to join if you receive the offer letter today?
Ans. 
I can join within 2 weeks of receiving the offer letter.
• I can start within 2 weeks of receiving the offer letter.

• I need to give notice at my current job before starting.

• I may need to relocate, which could affect my start date.
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It was an assessment test consisting of data structures and algorithms (DSA) and multiple-choice questions (MCQs).

Q1. 30 min Technical round. Question on Node js, React, and Javascript
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Q1. What were the in-depth concepts of Node, React, and JavaScript that were covered in the technical round?
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Q1. Final Technical Round cosist of Topics like System Design, Node js, React
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They asked some general Quantitative and logical questions and code snippets.

Q1. String Reverse and Two Sum
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Q2. Related to my projects and Tech Stacks
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Q1. This is the Second technical round. The interviewer asked about everything from my project.
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Q2. Asked some sql queries like joins and set operation
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Code Snept question with 3-4 Reasoning question. Google form

Pen paper coding round. String , Array . Linkedlist , graph, questions

Q1. Maximum Spaning
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Q2. Nearest Prime number
Ans. 
To find the nearest prime number, iterate from the given number in both directions until a prime number is found.
• Start iterating from the given number in both directions to find the nearest prime number.

• Check if a number is prime by dividing it by all numbers less than its square root.

• Keep track of the closest prime number found during the iteration.
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Q3. Second Maximum Number in Array
Ans. 
Find the second maximum number in an array of strings.
• Convert the array of strings to an array of integers.

• Sort the array in descending order.

• Return the second element in the sorted array.
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Q1. Project Question
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Q2. Robot question of DSA
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Q3. Stock Buy and sell - VI . Leetcode Hard
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Q4. Leetcode Medium
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Assignment includes Aptitude, Reasoning, 1 Coding Question (Medium Level), 1 SQL Query based Q and an essay writing (3 essays in 15 minutes each of atleast 200 Words).

Q1. Introduction and why not Java?
Ans. 
Java is a popular programming language, but other languages may be more suitable for certain projects or preferences.
• Java is a statically typed language, which may lead to more verbose code compared to dynamically typed languages like Python or JavaScript.

• Some developers prefer languages like Python for data analysis and machine learning projects due to its extensive libraries and ease of use.

• For web development, JavaS...read more
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Q2. Tell about JDBC,JVM, JDK, JRE, Servlets etc. only a bit as i am not from java background.
Ans. 
JDBC, JVM, JDK, JRE, and Servlets are key components in Java development.
• JDBC (Java Database Connectivity) is used to connect Java applications to databases.

• JVM (Java Virtual Machine) is the runtime environment for Java programs.

• JDK (Java Development Kit) is a software development kit for developing Java applications.

• JRE (Java Runtime Environment) is required to run Java applications on a computer.

• Servlets are Java cla...read more
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Q3. Tell about OOPS in C++ (Static Keyword, 4 Pillars,Class vs Struct).
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Q4. Code on online compiler for Overloading and overriding of functions.
Ans. 
Overloading and overriding are two important concepts in object-oriented programming that allow functions to have multiple definitions.
• Overloading: defining multiple functions with the same name but different parameters

• Example: int add(int a, int b) and int add(int a, int b, int c)

• Overriding: redefining a function in a subclass that is already defined in the superclass

• Example: superclass has a method display() and subc
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Q5. 4 SQL Queries based on simple concepts and Syntax based Q on View, Alter, Create Db etc.
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Q6. Eager to learn Java and why choose MongoDb.
Ans. 
I am eager to learn Java because of its widespread use in software development. I choose MongoDB for its flexibility and scalability in handling large volumes of data.
• Java is a popular programming language used for developing a wide range of applications, from web to mobile.

• Learning Java will open up opportunities for me to work on various projects and collaborate with other developers.

• MongoDB is a NoSQL database known...read more
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Q1. Introduction about myself
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Q2. What you know about the role
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Q3. What you know about revature working and clients.
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Q4. About salary structure and willing to relocate.
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Q5. About siblings and fight with them
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Q6. Will tell the results after 3 Weeks and that's it.
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Q1. Given the react machine coding example
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Q1. Explain about your projects
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It's completely mathematical

Its completely mathematical

Q1. Very difficult question asked by the CEO directly
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Q2. Questions on real world scenario
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