It involves the question of SQL, programming.

Q1. Why OOPs is used
Ans. 
OOP is used for organizing code into reusable objects, promoting code reusability, modularity, and easier maintenance.
• Encapsulation: Data and methods are bundled together in objects, promoting data security and code organization.

• Inheritance: Allows for the creation of new classes based on existing ones, promoting code reuse and reducing redundancy.

• Polymorphism: Objects can be treated as instances of their parent class,...read more
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Q2. What is multiple inheritance
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Multiple inheritance is a feature in object-oriented programming where a class can inherit attributes and methods from more than one parent class.
• Allows a class to inherit attributes and methods from multiple parent classes

• Can lead to the diamond problem where ambiguity arises if two parent classes have a method with the same name

• Languages like C++ support multiple inheritance
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Q3. What is mentioned bypolymorphism
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Polymorphism is the ability of a single function or method to operate on different types of data.
• Polymorphism allows objects of different classes to be treated as objects of a common superclass.

• There are two types of polymorphism: compile-time (method overloading) and runtime (method overriding).

• Example: Inheritance in object-oriented programming languages like Java allows for polymorphism.

• Example: A method 'draw()' ca...read more
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Quite basic and easy test

Q1. What is ACID PROPERTIES?
Ans. 
ACID properties are a set of properties that guarantee that database transactions are processed reliably.
• ACID stands for Atomicity, Consistency, Isolation, Durability

• Atomicity ensures that either all operations in a transaction are completed successfully or none are

• Consistency ensures that the database remains in a consistent state before and after the transaction

• Isolation ensures that multiple transactions can be exec...read more
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Q2. Explain projects
Ans. 
Projects are specific tasks or initiatives undertaken to achieve a particular goal or outcome.
• Projects involve a defined scope, timeline, and budget.

• They require a team of individuals with specific skills and roles.

• Examples of projects include launching a new product, implementing a software system, or organizing an event.
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Q1. What do you prefer smart work or hard work?
Ans. 
I believe in a combination of smart work and hard work to achieve optimal results.
• I believe in setting clear goals and working efficiently towards them (smart work)

• I also believe in putting in the necessary effort and dedication to accomplish tasks (hard work)

• Combining smart work with hard work can lead to better productivity and success in the long run
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Q2. Do you want to relocate?
Ans. 
Yes, I am open to relocating for the right opportunity.
• I am open to exploring new locations for career growth.

• I am willing to relocate if the job offers better prospects.

• I have experience moving for previous job opportunities.
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Q1. What is closuer? is normal function call as closuer or not
Ans. 
A closure is a function that has access to its own scope, as well as the scope in which it was defined.
• A closure allows a function to access variables from its outer function even after the outer function has finished executing.

• Closures are created whenever a function is defined within another function.

• Example: function outerFunction() { let outerVar = 'I am outer'; return function innerFunction() { console.log(outerVa
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Q2. What is asyn/await
Ans. 
Async/await is a feature in JavaScript that allows for asynchronous code to be written in a synchronous manner.
• Async/await is built on top of promises and provides a more readable and concise way to work with asynchronous code.

• The 'async' keyword is used to define a function as asynchronous, allowing it to use the 'await' keyword inside it.

• When 'await' is used, it pauses the execution of the function until the promise ...read more
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Q3. Remove duplicate from array
Ans. 
Use Set to remove duplicates from array of strings.
• Create a Set from the array to automatically remove duplicates

• Convert the Set back to an array if needed

• Example: const arr = ['apple', 'banana', 'apple', 'orange']; const uniqueArr = [...new Set(arr)];
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Q4. Hoe does react Dom update?
Ans. 
React DOM updates by comparing the virtual DOM with the actual DOM and only updating the necessary components.
• React creates a virtual DOM to represent the UI components.

• When a state or prop changes, React re-renders the virtual DOM.

• React then compares the virtual DOM with the actual DOM to identify the differences.

• Only the necessary components are updated in the actual DOM, minimizing performance impact.
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Q5. What is react hooks explain some
Ans. 
React Hooks are functions that let you use state and other React features without writing a class.
• React Hooks were introduced in React 16.8.

• They allow you to use state and other React features in functional components.

• Some commonly used hooks are useState, useEffect, useContext, and useRef.

• Hooks make it easier to reuse logic across components.

• Hooks can be used to manage component state, perform side effects, and more.
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Q6. What is call bind apply?
Ans. 
Call, bind, and apply are methods used to manipulate the value of 'this' in JavaScript functions.
• Call - invokes a function with a specified 'this' value and arguments provided individually.

• Bind - creates a new function that, when called, has its 'this' keyword set to the provided value.

• Apply - invokes a function with a specified 'this' value and arguments provided as an array.
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Q7. What is difference b/w redux and redux toolkit
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Redux Toolkit is a set of tools and best practices to simplify Redux development, while Redux is a predictable state container for JavaScript apps.
• Redux Toolkit provides a set of tools like createSlice, createAsyncThunk, and configureStore to simplify Redux setup and reduce boilerplate code.

• Redux Toolkit includes immer library for writing immutable update logic in a more convenient way.

• Redux Toolkit also includes a def...read more
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Q8. Write a RTL test to check the button
Ans. 
Writing a RTL test to check a button in React
• Use the render and fireEvent functions from @testing-library/react

• Find the button element using getByRole('button')

• Simulate a click event using fireEvent.click

• Assert that the button is visible and clickable
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Q9. What inline level and block level elements

Ans. 

Inline and block level elements in HTML/CSS

• Inline elements flow in the document in a line, without starting a new line. Examples include , , .

• Block level elements start on a new line and take up the full width available. Examples include

  ,

  ,

  .

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