Nous Infosystems Html Programmer Trainee Interview Questions and Answers

Q1. Difference between Sanity & Smoke
Ans. 
Sanity testing is a subset of regression testing, while smoke testing is a subset of acceptance testing.
• Sanity testing is performed to ensure that the critical functionalities of the software are working as expected.

• Smoke testing is performed to verify if the software build is stable enough for further testing.

• Sanity testing is usually performed after major changes or bug fixes.

• Smoke testing is performed on each build ...read more
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Q1. Basic questions on Javascript like closure, event loop,hoisting and some coding questions on map,filter, reduce
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Q2. Basic conceptual questions on React, redux
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Q1. Coding questions on JS and React
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Q1. Salary Expectation
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Q1. What are closures
Ans. 
Closures are functions that have access to variables from their containing scope even after the scope has closed.
• Closures allow functions to access variables from their outer function even after the outer function has finished executing.

• They are commonly used in event handlers, callbacks, and asynchronous programming.

• Closures help in maintaining state in functional programming.
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Q2. What is virtual DOM
Ans. 
Virtual DOM is a lightweight copy of the actual DOM used for efficient updates in web development.
• Virtual DOM is a concept used in frameworks like React to improve performance by minimizing actual DOM manipulations.

• When changes are made to the virtual DOM, a comparison is done with the actual DOM to determine the minimal updates needed.

• This approach reduces the number of costly DOM operations, resulting in faster rende
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Q3. What are the data types in JS
Ans. 
Data types in JavaScript include number, string, boolean, object, function, undefined, and null.
• Number - represents numeric data, e.g. 10, 3.14

• String - represents textual data, e.g. 'hello', '123'

• Boolean - represents true or false values, e.g. true, false

• Object - represents complex data structures, e.g. { key: 'value' }

• Function - represents executable code, e.g. function() { }

• Undefined - represents a variable that has ...read more
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Q1. Write react code for counter
Ans. 
React code for a simple counter
• Create a functional component for the counter

• Use useState hook to manage the count state

• Render the count value and buttons to increment and decrement the count
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Q1. Salary discussion
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Q1. Basic javascript questions and basic node js questions
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Q2. Basic programming questions
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Q1. They will check In depth architecture understanding of the products you have worked
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Q2. Test your Critical thinking by asking how you manage the load and multiple systems interaction, asyc programming
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Q1. Salary expectation, and attitude and behaviour test
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Basic questions easy to crack. Basic programming knowledge.

Q1. Oops questions, multithreading, Exception , String .
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Q1. About salary discussion only
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MCQ question they provide

Q1. Java , selenium related questions
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Q1. Discussion about salary
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Coding test was on Java programs. Basically for loop programs.