Wipro Technical Support Engineer Interview Questions and Answers

Q1. All are clear but I didn’t get offer letter
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Q2. Awaiting for joining letters
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Q1. Waiting for joining
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Q2. Still not get offer letter
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There were five rounds
1. HR screening
2. Technical Test
3. IVR test
4. Manager round
5. Offer letter discussion

Q1. Computer Network Question
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Q2. Group Discussion
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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
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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...read more
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Q4. What is react.js
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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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Q1. Tell me about yourself
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Q2. Last working experience
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Q1. DHCP DNS ACTIVE DIRECTORY
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Q2. Tell me about your job roles
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Q3. How do you troubleshoot system slowness issue
Ans. 
To troubleshoot system slowness, check for resource usage, run diagnostic tools, update software, and optimize settings.
• Check CPU, memory, and disk usage to identify any bottlenecks

• Run diagnostic tools like Task Manager, Resource Monitor, or Performance Monitor

• Update software and drivers to ensure compatibility and performance

• Optimize system settings such as startup programs, background processes, and power settings
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