Infosys BPM Software Trainee Interview Questions and Answers

Q1. What is Rabbit MQ?
Ans. 
RabbitMQ is a message broker software that implements the Advanced Message Queuing Protocol (AMQP).
• RabbitMQ allows different software systems to communicate by sending and receiving messages.

• It can be used to decouple different parts of a system, making it more scalable and resilient.

• RabbitMQ supports multiple messaging protocols, including AMQP, MQTT, and STOMP.
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Q2. What is LINQ in .net?
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LINQ (Language Integrated Query) is a feature in .NET that allows querying data from different data sources using a uniform syntax.
• LINQ allows querying data from collections, databases, XML, and more.

• It provides a set of standard query operators like Where, Select, OrderBy, etc.

• LINQ queries are written in C# or VB.NET and are type-safe.

• Example: var result = from num in numbers where num % 2 == 0 select num;
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Easy coding questions

Q1. Hashmap question
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SQL query, Coding Question

Some topics are given for group discussion

Q1. Technical questions are posed by interviewers
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Q2. 2 programs based on oops concepts,about project,about skills added in resume.
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Q1. All about Oops concept
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Q2. All about basics if language you learn
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First time attend aptitude test .

Q1. Any computer engineering basic questions
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Q2. C,C++,java , python
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Q3. What is inheritance.how many times of inheritance.
Ans. 
Inheritance is a concept in object-oriented programming where a class can inherit attributes and methods from another class.
• Inheritance allows for code reusability and promotes the concept of 'is-a' relationship.

• There are different types of inheritance such as single inheritance, multiple inheritance, multilevel inheritance, and hierarchical inheritance.

• Example: Class B inheriting from Class A - 'class B: public A {}'
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Q4. How many characters are used in C.
Ans. 
C uses a set of 128 characters, including letters, digits, special characters, and control characters.
• C uses 26 letters (uppercase and lowercase), 10 digits (0-9), and various special characters like !, @, #, $, %, etc.

• C also includes control characters like newline, tab, carriage return, etc.

• The total number of characters used in C is 128.
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Q5. What is c. How many characters are used.
Ans. 
C is a programming language known for its efficiency and flexibility. It uses 256 characters.
• C is a high-level programming language used for system programming, embedded systems, and applications.

• C uses 256 characters, including letters, digits, special characters, and whitespace.

• Examples of characters in C include 'a', '1', '+', and ' '.
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10 day,Numbers,Alebra

Q1. Oop,C++.html,css,javascrept
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Q2. What is order list
Ans. 
An ordered collection of items, typically displayed in a numbered list.
• Order list is used to display items in a specific sequence.

• Items in an order list are typically numbered or marked with bullets.

• Example:

  1. Item 1
  2. Item 2
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Q3. What is javascript
Ans. 
JavaScript is a high-level, interpreted programming language used for creating interactive websites.
• JavaScript is commonly used for client-side web development.

• It can be used to add interactivity to websites, such as form validation or dynamic content.

• JavaScript can also be used for server-side development with Node.js.

• Examples of JavaScript frameworks/libraries include React, Angular, and Vue.
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Q4. What is ===operator
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=== operator is a strict equality operator in JavaScript that checks if two values are equal in both value and type.
• === operator returns true if both operands are of the same type and have the same value

• It does not perform type coercion, unlike the == operator

• Example: 5 === '5' will return false because the operands are of different types
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Q5. What is the main features of oop
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Main features of OOP include encapsulation, inheritance, and polymorphism.
• Encapsulation: Bundling data and methods that operate on the data into a single unit (class).

• Inheritance: Ability to create new classes based on existing classes, inheriting their attributes and methods.

• Polymorphism: Ability for objects of different classes to respond to the same message in different ways.

• Example: Encapsulation - a class 'Car' wi...read more
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Prepare well and all the best.

Q1. What is Oops concept
Ans. 
Oops concept stands for Object-Oriented Programming concepts which include principles like inheritance, encapsulation, polymorphism, and abstraction.
• Oops concept is a programming paradigm that focuses on objects and classes.

• It includes principles like inheritance, where a class can inherit properties and behavior from another class.

• Encapsulation is another principle where data is wrapped within a class and can only be ...read more
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Q2. Features of java 8
Ans. 
Java 8 introduced several new features including lambda expressions, functional interfaces, streams, and default methods.
• Lambda expressions allow you to pass functionality as an argument to a method.

• Functional interfaces have a single abstract method and can be used with lambda expressions.

• Streams provide a way to work with sequences of elements and perform operations like filter, map, and reduce.

• Default methods allow ...read more
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Q1. Questions regarding React.js, TypeScript, GraphQL pure component, hooks, useEffect vs useLayoutEffect, portals in react, how do you make API calls, What are ref in React, error handling in react how to ove...read more
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Q2. Small machine coding assignment to solve in online IDE fetch data from API & show the results also provide search input box at top where user can search items.
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Q1. How do you create GQL server, directive in GQL, Fragments in GQL how do you write unit tests for gql Queries/mutations (on the server side) TypeScript: Partial, Decorators, unions, Generics useCallback vs ...read more
Ans. 
Answering questions related to creating GQL server, directives, fragments, unit tests, TypeScript features, and React.js functionalities.
• To create a GQL server, you can use tools like Apollo Server or Express with GraphQL middleware.

• Directives in GQL are used to modify the behavior of a field or fragment in a query. For example, @include and @skip are common directives.

• Fragments in GQL allow you to define reusable unit...read more
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Q2. React Router & Authentication using jwt
Ans. 
React Router is used for client-side routing in React applications. JWT is used for authentication by generating tokens for secure communication.
• React Router is a library that allows for declarative routing in React applications

• Authentication using JWT involves generating a token on the server and sending it to the client for subsequent requests

• JWT tokens typically contain information about the user and are signed to e
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Q1. 2 people took the interview & it took 1 hour 15 mins 1. Array based question on sorting & merging 2. array based easy question 3. sorting related question (medium level)
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