Wipro Technical Support Engineer Interview Questions, Process, and Tips

Q1. What is JavaScript
Ans. 
JavaScript is a programming language used to add interactivity and dynamic features to websites.
• JavaScript is a client-side scripting language.

• It is primarily used for web development.

• JavaScript can be embedded directly into HTML pages.

• It allows for the manipulation of webpage elements and handling of events.

• Common uses include form validation, creating interactive content, and AJAX requests.
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Q2. What is closure
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Closure is a programming concept that allows a function to access variables from its parent scope even after the parent function has finished executing.
• Closure is created when a nested function references a variable from its outer function.

• The inner function can access and modify the variables from the outer function.

• Closure helps in encapsulating data and creating private variables in JavaScript.

• It allows functions to...read more
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Q3. Explain map method
Ans. 
The map method is used to create a new array by applying a function to each element of an existing array.
• The map method takes a callback function as an argument.

• The callback function is executed on each element of the array.

• The result of the callback function is added to the new array.

• The map method does not modify the original array.

• Example: ['apple', 'banana', 'cherry'].map(fruit => fruit.toUpperCase()) returns ['APP
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Q4. What is react.js
Ans. 
React.js is a JavaScript library for building user interfaces.
• React.js is used for creating reusable UI components.

• It follows a component-based architecture.

• React.js uses a virtual DOM for efficient rendering.

• It allows for declarative and efficient updates to the UI.

• React.js is widely used in web development for building interactive and dynamic user interfaces.
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Q5. Explain promise in JavaScript
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A promise in JavaScript is an object representing the eventual completion or failure of an asynchronous operation.
• Promises are used to handle asynchronous operations such as fetching data from a server or reading a file.

• They provide a cleaner and more readable way to write asynchronous code compared to using callbacks.

• Promises have three states: pending, fulfilled, or rejected.

• They can be chained using the then() metho...read more
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Grammar and spelling

Q1. Tell me about yourself.
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Q2. Why do you think you are fit for this role?
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Q3. Some topics given to check your communication skills. Mine was Internet.
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Basics question from maths and reasoning. Easy to tackle.

Q1. They asked about your previous job salary.
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Q2. Salary negotiation.
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Q1. Basic questions about osi layers and college projects
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Q1. Salary expectation
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Q1. What is a DNS DHCP networking troubleshoot active directory
Ans. 
DNS, DHCP, networking, troubleshooting, and Active Directory are all related to managing and troubleshooting network services and infrastructure.
• DNS (Domain Name System) is responsible for translating domain names into IP addresses.

• DHCP (Dynamic Host Configuration Protocol) is used to automatically assign IP addresses to devices on a network.

• Networking involves the design, implementation, and management of computer net...read more
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Q2. Tell me something about your self
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Q1. Why should hire you what is accepted CTC
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Most questions about grammar

Q1. Tell me about yourself
Ans. 
Experienced Technical Support Engineer with a background in troubleshooting hardware and software issues.
• 5+ years of experience in providing technical support to customers

• Proficient in diagnosing and resolving hardware and software issues

• Skilled in communicating technical information to non-technical users

• Familiar with various operating systems and networking protocols

• Certified in IT support and customer service
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