Teleperformance Web Developer Interview Questions and Answers

Coding test was the first round of interview

Q1. What is virtual dom in react and what makes it faster ?
Add your answer

Q1. It was HR round
Add your answer

Q1. What is reactjs?
Ans. 
ReactJS is a JavaScript library for building user interfaces.
• ReactJS is developed and maintained by Facebook.

• It allows developers to create reusable UI components.

• ReactJS uses a virtual DOM for better performance.

• It follows a component-based architecture.

• ReactJS can be used to build single-page applications.
Answered by AI
Add your answer
Q2. What is call, apply and bind in javascript?
Ans. 
call, apply, and bind are methods in JavaScript used to manipulate the context of a function.
• call() is used to invoke a function with a specified 'this' value and arguments provided individually.

• apply() is similar to call() but arguments are passed as an array.

• bind() is used to create a new function with a specified 'this' value and initial arguments.
Answered by AI
Add your answer
Q3. Data Types in javascript
Ans. 
JavaScript has several data types including string, number, boolean, object, array, null, and undefined.
• String: 'hello'

• Number: 42

• Boolean: true or false

• Object: { key: value }

• Array: [1, 2, 3]

• Null: null

• Undefined: undefined
Answered by AI
Add your answer

2 DSA questions. Both medium level difficult

Q1. Mostly questions from Domain, JavaScript, Like output based questions of objects, their memory location, reference, one DSA question from recursion, output based questions mostly
Add your answer

Q1. Tell me about yourself.
Add your answer
Q2. What is the business
Ans. 
The business refers to the organization or entity that provides goods or services to customers in exchange for payment.
• It involves creating and selling products or services

• It requires marketing and advertising to attract customers

• It involves managing finances and operations to ensure profitability

• Examples include retail stores, restaurants, and online businesses
Answered by AI
Add your answer