Nagarro React Developer Interview Questions and Answers

Javascript questions about closure,prototype, strings array problem solving

Html css react coding with tricky and real scenarios in project

Q1. Managerial round with basic introduction and future goals
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Coding test was around 2 hrs

Q1. What is kubernets
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Kubernetes is an open-source container orchestration platform for automating deployment, scaling, and management of containerized applications.
• Kubernetes helps in automating the deployment, scaling, and management of containerized applications.

• It allows for easy scaling of applications by adding or removing containers based on demand.

• Kubernetes provides features like load balancing, self-healing, and rolling updates fo...read more
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Q2. What is docker container runtime
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Docker container runtime is the engine that executes containers, managing their lifecycle and resources.
• Docker container runtime is responsible for running and managing Docker containers.

• It provides an isolated environment for applications to run without affecting the host system.

• Popular container runtimes include Docker Engine, containerd, and CRI-O.
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Q1. Object , array , ES6, React basics
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Q1. Advance Javascript questions
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Q2. React application with custom hooks
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Custom hooks in React allow for reusable logic across components.
• Custom hooks are functions that use React hooks internally and can be reused across multiple components.

• They can encapsulate complex logic and state management, making components more modular and easier to maintain.

• Example: A custom hook for fetching data from an API and handling loading and error states can be used in multiple components.

• Example: A custo...read more
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Q1. Roles & Responsibilites
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Q1. They have asked Backed related question for a ui role.
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Q2. Mostly project related question
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Worst set of questions

Advanced DSA for entry level role

Q1. Types of Promises
Ans. 
Promises in JavaScript are objects representing the eventual completion or failure of an asynchronous operation.
• Promises can be in one of three states: pending, fulfilled, or rejected.

• Promises can be chained using .then() to handle success and .catch() to handle errors.

• Promises can be created using the Promise constructor or by using async/await syntax.
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Q2. Difference between useState and useEffect
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useState is used to manage state in functional components, while useEffect is used to perform side effects in functional components.
• useState is used to declare state variables in functional components.

• useEffect is used to perform side effects in functional components, such as data fetching, subscriptions, or manually changing the DOM.

• useState does not trigger re-renders, while useEffect can be used to trigger re-render...read more
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Q3. What is Callback hell
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Callback hell is a situation where multiple nested callbacks make the code difficult to read and maintain.
• Occurs when multiple asynchronous operations are nested within each other

• Leads to deeply nested code structure which is hard to understand

• Can be avoided by using Promises, async/await, or modularizing code
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Q4. Difference between traditional function and arrow function
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Traditional functions are defined using the function keyword, while arrow functions are defined using a concise syntax with =>.
• Traditional functions are hoisted, while arrow functions are not.

• Arrow functions do not have their own 'this' keyword, they inherit it from the parent scope.

• Arrow functions are more concise and easier to read compared to traditional functions.

• Traditional functions are better for methods in obje...read more
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Q5. Usecase to create counter in react
Ans. 
Creating a counter in React to increment and decrement a value.
• Create a state variable to store the count value

• Use setState to update the count value

• Render the count value in the component

• Add buttons to increment and decrement the count value
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Q6. Program to find frequency of letters in a string
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Program to find frequency of letters in a string
• Create an object to store the frequency of each letter

• Loop through the string and increment the count of each letter in the object

• Convert the object into an array of strings with letter and frequency pairs
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Q7. Program to find if substring is present in a given string without using predefined functions
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Iterate through the given string to check if the substring is present.
• Iterate through the given string and check if each character matches the first character of the substring.

• If a match is found, check the subsequent characters to see if they form the substring.

• Return true if the entire substring is found within the given string, otherwise return false.
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Q1. Array qs reverse
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Q2. Question about angular and react
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Good all logical type of question, easy

Q1. Good they ask all about projects
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Q2. What were your projects?
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Q3. What difficulties did u face during the project
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Q4. Sql questions were asked
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