Nagarro Interview Questions, Process, and Tips

This was mix of aptitude test with questions related to .Net MVC, CSS, HTML and OOPS

Q1. 1. Explain Middleware in .Net Core
Ans. 
Middleware in .Net Core is a software component that acts as a bridge between an application's request processing pipeline and the server.
• Middleware components are executed in the order they are added to the pipeline.

• They can perform tasks like authentication, logging, error handling, etc.

• Middleware can be added using the 'UseMiddleware' method in the 'Configure' method of Startup class.
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Q2. 2. Entity Framework related questions like different approached of entity framework and what is DBContext file.
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Q3. 3. JavaScript: difference between var and let keyword, closure function
Ans. 
var keyword has function scope, let keyword has block scope. Closure function is a function defined inside another function.
• var keyword has function scope, let keyword has block scope

• Variables declared with var are hoisted to the top of their function, let variables are not hoisted

• Closure function is a function defined inside another function, has access to the outer function's variables
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Q4. 4. React: What is Virtual DOM, useState and different types of Hooks in React
Ans. 
Virtual DOM is a lightweight copy of the actual DOM, useState is a hook for managing state in functional components, and Hooks are functions that let you use state and other React features in functional components.
• Virtual DOM is a lightweight copy of the actual DOM that React uses to improve performance by updating only the necessary parts of the actual DOM.

• useState is a hook in React that allows functional components ...read more
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Q5. 5. SQL: Different Types of triggers, define index and its types
Ans. 
Triggers in SQL are special stored procedures that are automatically executed when certain events occur in a database. Indexes in SQL are used to speed up the retrieval of data from tables.
• Types of triggers: DML triggers (insert, update, delete), DDL triggers (create, alter, drop), and Logon triggers.

• Indexes in SQL are used to quickly retrieve data from tables. Types of indexes include clustered, non-clustered, unique,...read more
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Q1. Microservice Architecture
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Q2. Rest api vs soap api
Ans. 
REST API is lightweight, flexible, and widely used, while SOAP API is more rigid and heavy.
• REST API uses standard HTTP methods like GET, POST, PUT, DELETE, while SOAP API uses XML for communication.

• REST API is stateless and can be cached, making it faster, while SOAP API is stateful and requires more bandwidth.

• REST API is easier to implement and understand, while SOAP API has more built-in security features.

• Examples: R
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Q1. Difference between Iterator and Iterables
Ans. 
Iterator is an object that allows iteration over a collection, while Iterables are objects that can be iterated over.
• Iterator is used to iterate over elements in a collection, while Iterables are objects that can be iterated over using an Iterator.

• Iterables implement the Iterable interface, which allows them to be used in for-each loops in Java.

• Iterator has methods like hasNext() and next() to iterate over elements, wh...read more
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Q2. Use of lambda expression
Ans. 
Lambda expressions are anonymous functions that can be used to create concise and readable code.
• Lambda expressions are used to create inline functions without a formal definition.

• They are often used in functional programming languages like Java, Python, and C++.

• Lambda expressions can be used to pass functions as arguments to higher-order functions.

• They are particularly useful for writing code that is more concise and r...read more
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Coding test was easy

It was regarding Java, English etc.

Q1. Exception handling
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Q2. Write a program
Ans. 
Program to sort an array of strings in alphabetical order
• Use a sorting algorithm like bubble sort or quicksort

• Compare adjacent strings and swap if necessary

• Repeat until the array is sorted
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Q1. About the project
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Q2. Tell me about yourself
Ans. 
I am a dedicated and detail-oriented engineer with a passion for problem-solving and continuous learning.
• Graduated with a degree in Engineering from XYZ University

• Completed internships at ABC Company and gained hands-on experience in project management

• Proficient in CAD software and technical drawing

• Strong communication skills and ability to work well in a team
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