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10+ Utility Warehouse Interview Questions and Answers
Q1. what is MVC and Explain its life cycle?
MVC stands for Model-View-Controller, a software design pattern used for organizing code in a structured manner.
Model represents the data and business logic of the application.
View is responsible for displaying the data to the user.
Controller acts as an intermediary between Model and View, handling user input and updating the Model accordingly.
MVC life cycle involves user interacting with the View, which triggers the Controller to update the Model and refresh the View.
Example...read more
Q2. Tell me difference between Let, Var, Cost and
Let, var, and const are used to declare variables in JavaScript, with differences in scope and mutability.
let: block-scoped, can be reassigned
var: function-scoped, can be reassigned
const: block-scoped, cannot be reassigned
Q3. What is hoisting?
Hoisting in JavaScript is the behavior where variable and function declarations are moved to the top of their containing scope during the compilation phase.
Variable declarations are hoisted to the top of their scope, but not their assignments.
Function declarations are fully hoisted, meaning they can be called before they are declared.
Hoisting can lead to unexpected behavior if not understood properly.
Q4. What is node?
Node is a runtime environment that allows JavaScript code to be executed outside of a web browser.
Node.js is an open-source, cross-platform JavaScript runtime environment.
It is built on Chrome's V8 JavaScript engine.
Node.js allows developers to run JavaScript on the server-side.
Node.js is commonly used for building server-side applications, APIs, and microservices.
Q5. what is dotnet core?
Dotnet Core is a free, open-source, cross-platform framework for building modern, cloud-based, and internet-connected applications.
Cross-platform framework for building applications
Open-source and free to use
Supports modern, cloud-based, and internet-connected applications
Q6. What is eventloop
The event loop is a mechanism in programming that allows for asynchronous execution of code by continuously checking for and handling events.
The event loop is commonly used in JavaScript to handle asynchronous operations such as setTimeout, setInterval, and AJAX requests.
It allows for non-blocking I/O operations, meaning that the program can continue to run other tasks while waiting for I/O operations to complete.
The event loop works by continuously checking the event queue f...read more
Q7. What is closure
Closure is the combination of a function bundled together with references to its surrounding state.
Closure allows a function to access variables from its outer scope even after the outer function has finished executing.
It is created whenever a function is defined within another function, and the inner function has access to the outer function's variables.
Closure helps in maintaining the state of a function and allows for data encapsulation.
Q8. What is function overloading?
Function overloading is the ability to define multiple functions with the same name but different parameters in a class.
Allows multiple functions with the same name but different parameters to be defined in a class
Parameters can differ in number, type, or order
Helps improve code readability and maintainability
Example: void print(int num) and void print(string text) are two overloaded functions with the same name 'print'
Q9. What is react js?
React JS is a JavaScript library for building user interfaces.
React JS is developed and maintained by Facebook.
It allows developers to create reusable UI components.
React uses a virtual DOM for better performance.
It follows a unidirectional data flow.
React can be used to build single-page applications.
Q10. what is node js?
Node.js is a runtime environment that allows you to run JavaScript on the server side.
Node.js is built on Chrome's V8 JavaScript engine.
It uses an event-driven, non-blocking I/O model.
Node.js is commonly used for building scalable network applications.
It is popular for building web servers and APIs.
Node.js allows you to use JavaScript for both client-side and server-side development.
Q11. Define let var const
let, var, and const are used to declare variables in JavaScript with different scoping rules.
let: block-scoped variable, can be reassigned
var: function-scoped variable, can be reassigned
const: block-scoped variable, cannot be reassigned, but its properties can be modified
Q12. Define Closure
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 an outer function even after the outer function has finished executing.
Closures are commonly used in event handlers, callbacks, and in functional programming.
Example: function outerFunction() { let outerVar = 'I am outer'; return function innerFunction() { console.log(outerVar); }; }
Q13. How can you create healthy environment?
Creating a healthy environment involves promoting physical, mental, and emotional well-being among employees.
Encourage open communication and feedback
Provide opportunities for physical activity and healthy eating
Promote work-life balance and stress management
Offer resources for mental health support
Create a positive and inclusive company culture
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