IonIdea Devops Engineer Interview Questions and Answers

Q1. Which data structure is used to reverse an array?
Ans. 
The data structure used to reverse an array is a stack.
• A stack data structure can be used to reverse an array by pushing each element onto the stack and then popping them off in reverse order.

• Example: If we have an array of strings ['apple', 'banana', 'cherry'], we can reverse it using a stack to get ['cherry', 'banana', 'apple'].
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Q1. They just ask what you have in your resume and your project details
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Q1. It was mostly based on SQL and php
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Q1. Viva technical interview
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Q1. Another viva technical interview
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Q1. Interview with COO
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Q1. PHP Based type questions
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Q1. HR Based type questions
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Q1. How to upload files in Nodejs Application
Ans. 
To upload files in a Node.js application, you can use the 'multer' middleware package.
• Install 'multer' package using npm

• Set up multer middleware in your Node.js application

• Create a route in your application to handle file uploads

• Use 'multer' to process and save uploaded files to a specified destination
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Q2. Explain Event Loop in NodeJS
Ans. 
Event Loop in NodeJS manages asynchronous operations by executing callback functions when certain events occur.
• Event Loop continuously checks the Call Stack and Callback Queue to see if there are any functions that need to be executed.

• If the Call Stack is empty, Event Loop will move functions from the Callback Queue to the Call Stack for execution.

• Event Loop allows NodeJS to handle multiple requests concurrently withou...read more
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Online coding test(MCQ)

Q1. Introduce yourself.
Ans. 
I am a passionate web developer with experience in front-end and back-end technologies.
• Experienced in HTML, CSS, JavaScript, and various frameworks like React and Angular

• Proficient in server-side languages like Node.js and PHP

• Familiar with databases such as MySQL and MongoDB

• Strong problem-solving skills and ability to work in a team environment
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Q2. Tell me about your previous company experience
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Php mcq

Q1. Basic concepts of PHP
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Q2. What is multilevel inhertance
Ans. 
Multilevel inheritance is a concept in object-oriented programming where a class inherits properties and methods from another class, which in turn inherits from another class.
• Multilevel inheritance involves creating a hierarchy of classes, where each class inherits from the class above it.

• The derived class inherits the properties and methods of the base class, and can also add its own unique properties and methods.

• This...read more
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Q1. PHP OOPS Concept , Structures
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Q1. Why should we hire you?
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Q1. Basic to intermediate level questions.
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Machine test on your technology stack. Deeply conceptual.

Q1. Conceptual, deep logic and reasoning
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Q1. Why we should hire you? Keep yourself ready with answer to face this question.
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