QUADRANT RESOURCE LLC Software Developer Interview Questions and Answers

Q1. Tell us about your experience.
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Q2. In english, give me a feedback you received lately.
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Q1. Brief explanation of SOLID principles
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Q2. Ref vs out arguments
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Q1. What is React, and what are its lifecycle methods?
Ans. 
React is a JavaScript library for building user interfaces.
• React is used for creating interactive UI components.

• It uses a virtual DOM for efficient rendering.

• React lifecycle methods include componentDidMount, componentDidUpdate, and componentWillUnmount.

• These methods allow developers to perform actions at specific points in a component's lifecycle.
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Q2. What is the virtual DOM and how does reconciliation work in it?
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Virtual DOM is a lightweight copy of the actual DOM used for efficient updates. Reconciliation is the process of updating the actual DOM based on changes in the virtual DOM.
• Virtual DOM is a lightweight copy of the actual DOM kept in memory.

• When changes are made to the UI, they are first reflected in the virtual DOM.

• Reconciliation is the process of comparing the virtual DOM with the actual DOM and updating only the nece...read more
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Aptitude,reasoning,verbal,C language,Java,C++

Q1. What is interface in JAVA
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Q2. Explain OOPS in JAVA
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Q1. They have connected the client call with me directly and only that 2 round of technical interview happened and hr round. That's it
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Q1. Easy interview interview with tcs
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Q2. Hana consultant
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Q1. Project based backend and frontend
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Q2. How to connect to backend
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To connect to the backend, you can use APIs, database connections, or web services.
• Use APIs to send and receive data between the frontend and backend

• Establish database connections to retrieve and store data

• Utilize web services for communication between different systems
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Q1. What is class what is object what is different between private protected and public and default
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A class is a blueprint for creating objects, while an object is an instance of a class. Private, protected, public, and default are access modifiers in object-oriented programming.
• A class is a template or blueprint that defines the properties and behaviors of objects.

• An object is an instance of a class, created using the class blueprint.

• Private access modifier restricts access to class members within the same class.

• Pro...read more
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Q2. What is object ?
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An object is a self-contained entity that consists of both data and behavior.
• Objects are instances of classes in object-oriented programming.

• They encapsulate data and provide methods to manipulate that data.

• Objects can interact with each other through method calls and message passing.

• Examples of objects include a car, a person, or a bank account.
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Q3. What is public?
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Public is a keyword in programming languages that denotes the accessibility of a class, method, or variable.
• Public is one of the access modifiers in object-oriented programming.

• It allows the class, method, or variable to be accessed from any other class or package.

• Public members are part of the public API of a software component.

• Example: public class MyClass { ... }

• Example: public void myMethod() { ... }

• Example: public
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Q4. What is private?
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In programming, private is an access modifier that restricts the visibility of a class member to within its own class.
• Private is used to encapsulate data and prevent direct access from outside the class.

• Private members can only be accessed through public methods or properties.

• Private variables are often used to store internal state or implementation details.

• Private methods are used for internal logic and are not meant
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Q5. What is protected
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protected is an access modifier in object-oriented programming that restricts access to members within the same package or subclasses.
• protected is one of the four access modifiers in Java, along with public, private, and default.

• Members declared as protected can be accessed within the same package or by subclasses.

• Protected members are not accessible outside the package unless accessed through inheritance.

• Example: prot...read more
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Clock questions and nim game

Arrays, basics. easy, some important topics in python and sql

Q1. SQL basics question learned in online or self
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Q2. Joins, groupby, clause, projection, having
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