Wipro Javascript Developer Interview Questions and Answers for Freshers

Q1. Why should we hire you?
Ans. 
I have a strong background in JavaScript development and a proven track record of delivering high-quality projects.
• Extensive experience in JavaScript development

• Strong problem-solving and analytical skills

• Ability to work well in a team and collaborate effectively

• Proven track record of delivering high-quality projects

• Excellent communication and interpersonal skills
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Exam used to determine an individual's skill or propensity to succeed in a given activity

Q1. An interview to assess your technical ability for the role, and the depth and breadth of your knowledge in your chosen field.
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Q2. Coding, Data analysis, etc. Technical interviews differentiate from general interviews and focus solely on the technical skills of the candidates.
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Yes, Aptitude test is so think and great full in my knowledge

The coding test is for HTML CSS for the frontend backend for the javascript

Q1. What is Promise in JS?
Ans. 
Promise in JS is an object representing the eventual completion or failure of an asynchronous operation.
• Promises are used to handle asynchronous operations in JavaScript.

• They can be in one of three states: pending, fulfilled, or rejected.

• Promises can be chained using .then() method to handle success and failure cases.

• Example: new Promise((resolve, reject) => { ... }).then(result => { ... }).catch(error => { ... });
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Q2. What is Call back?
Ans. 
A callback is a function passed as an argument to another function to be executed later.
• Callback functions are commonly used in asynchronous programming to handle responses or events.

• Callbacks can be synchronous or asynchronous.

• Example: setTimeout function in JavaScript takes a callback function as an argument to be executed after a specified time.
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Aptitude round consists Logical reasoning, General Aptitude, Grammar related questions etc. All are moderate level questions.

Q1. Explain OOPs w.r.t Java
Ans. 
OOPs is a programming paradigm that uses objects to represent real-world entities. Java is an OOPs language.
• OOPs stands for Object-Oriented Programming System

• Java is a class-based OOPs language

• Encapsulation, Inheritance, Polymorphism, and Abstraction are the four pillars of OOPs

• Objects have state and behavior

• Java supports interfaces, which allow for multiple inheritance

• Example: A car can be represented as an object wit...read more
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Q2. Explain about the projects that you have worked on
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Q3. Explain how Java solves machine dependency of code execution
Ans. 
Java solves machine dependency by using bytecode and virtual machine.
• Java code is compiled into bytecode which is platform-independent

• The bytecode is executed by the Java Virtual Machine (JVM) which is platform-specific

• JVM translates bytecode into machine code for the specific platform

• This allows Java code to run on any platform with a JVM installed

• Example: A Java program compiled on Windows can run on Linux or Mac as
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Q1. Why should we hire you?
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Q2. Tell me about yourself.
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