GoWebEz Front end Developer Interview Questions and Answers

Round duration - 360 minutes
Round difficulty - Medium

Basically TCS conduct its flagship event named as CODEVITA . And it offers Internship to prefinal (3rd )year students .

Q1. 
Allocate Books Problem Statement
Given an array of integers arr, where arr[i] represents the number of pages in the i-th book, and an integer m representing the number of students, allocate all the books ...read more
Ans. 
Allocate books to students in a way that minimizes the maximum number of pages assigned to a student.
• Iterate through possible allocations and calculate the maximum pages assigned to a student.

• Find the minimum of these maximums to get the optimal allocation.

• Return the minimum pages allocated in each test case, or -1 if not possible.
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Q1. Self,and, Javascript
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Q2. HTML,css,ms.word
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Q3. Communication skills
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Q4. Work process group discussion
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Q1. How you can improve performance in Angular App
Ans. 
Improving performance in Angular app involves optimizing code, reducing HTTP requests, lazy loading modules, and using AOT compilation.
• Optimize code by avoiding unnecessary watchers and using track by in ngFor loops

• Reduce HTTP requests by combining multiple requests into one using HTTP interceptors

• Lazy load modules to only load components when needed, improving initial load time

• Use Ahead-of-Time (AOT) compilation to pr
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Q1. How does React native works internally? Like alloting memory to rendering JS code on android and ios devices.
Ans. 
React Native works by using a bridge to communicate between JavaScript and native code on iOS and Android devices.
• React Native uses a JavaScript thread to handle logic and a separate thread for UI rendering.

• The bridge allows for communication between the JavaScript thread and native code on the device.

• React Native uses a virtual DOM to optimize rendering performance.

• Memory allocation is handled by the device's operatin...read more
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Q2. Do you know about React middlewares? why are they used?
Ans. 
React middlewares are functions that intercept and modify requests and responses in a React application.
• Middlewares are used to add additional functionality to an application without modifying the core code.

• They can be used for authentication, logging, error handling, and more.

• Examples of React middlewares include Redux Thunk, Redux Saga, and React Router.

• They are typically implemented using higher-order functions.

• Midd...read more
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Q3. Do you know about React Native Context Api?
Ans. 
Yes, React Native Context API is a way to manage global state in React Native applications.
• Context API allows passing data through the component tree without having to pass props down manually at every level.

• It is useful for managing global state such as user authentication, theme, and language preferences.

• Context API consists of two parts: the Provider component and the Consumer component.

• The Provider component is use...read more
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Q4. React Native Functional components lifecycle methods?
Ans. 
React Native functional components have limited lifecycle methods compared to class components.
• Functional components use useEffect() instead of componentDidMount() and componentDidUpdate()

• useEffect() can be used to handle component mount, update, and unmount

• useEffect() takes a callback function and an array of dependencies as arguments

• The callback function can return a cleanup function to handle component unmount

• Functi...read more
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Q5. App store and playstore publishing related questions.
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Q1. Is multiple inheritance supported in Java
Ans. 
No, Java does not support multiple inheritance.
• Java only supports single inheritance through classes.

• However, multiple inheritance can be achieved through interfaces.

• Diamond problem can be avoided in interfaces by implementing default methods.

• Example: class A extends B implements C, D {}
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Q2. No, it is supported through interfaces only .
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Q1. What is Event Loop ? How it works?
Ans. 
Event Loop is a mechanism in JavaScript that manages the execution of code and handles asynchronous operations.
• Event Loop continuously checks the call stack and the message queue.

• If the call stack is empty, it takes the first message from the queue and pushes it onto the call stack.

• If the message is a callback function, it is executed and removed from the call stack.

• If the message is not a callback function, it is pass...read more
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Q2. Make a set of 6 boxes Responsive in CSS
Ans. 
Use CSS to make a set of 6 boxes responsive
• Use percentage or viewport units for width and height

• Use media queries to adjust styles for different screen sizes

• Consider using flexbox or grid for layout

• Avoid using fixed pixel values

• Test on different devices and browsers

• Use CSS frameworks like Bootstrap or Foundation for easier implementation
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Q3. Hoisting & Closures Questions
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Q1. What's your Salary expectations ?
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Q1. Defined your self to about your aducation and
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Q2. What is computer in your language
Ans. 
A computer is an electronic device that can perform various tasks by executing instructions given to it.
• A computer is made up of hardware components such as CPU, memory, and storage devices.

• It runs on an operating system and software applications.

• Computers can be used for various purposes such as communication, entertainment, and work.

• Examples of computers include desktops, laptops, tablets, and smartphones.
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Q3. What about html What is the you html in frontend
Ans. 
HTML is the standard markup language for creating web pages and applications.
• HTML stands for HyperText Markup Language

• It is used to structure content on the web

• HTML elements are used to define the different parts of a webpage

• Examples include <h1> for headings, <p> for paragraphs, and <img> for images
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