Firstsource Solutions Senior Software Developer Interview Questions and Answers

Q1. Oops,c#, sql basic
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Q1. C#, sql c# advance
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Q1. Notice period and salary
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Q1. Aptitude question
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Q2. Explanation about my project
Ans. 
I developed a web application for tracking personal fitness goals and progress.
• Used HTML, CSS, and JavaScript for front-end development

• Utilized Node.js and Express for back-end development

• Implemented user authentication and data storage using MongoDB

• Incorporated data visualization tools like Chart.js for displaying progress graphs
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Q1. What is k in KNN algorithm ?
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k in KNN algorithm represents the number of nearest neighbors to consider when making a prediction.
• k is a hyperparameter that is chosen by the user and determines how many neighbors to look at when classifying a new data point.

• A smaller value of k can lead to overfitting, while a larger value can lead to underfitting.

• For example, if k=3 in a KNN algorithm, the prediction for a new data point will be based on the majori
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Q2. A small riddle
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Q1. What is Rabbit MQ?
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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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Q1. Dependency injections
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Q2. Solid principles,linq
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Easy coding questions

Q1. Hashmap question
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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.
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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.
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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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Q1. Basics of your technical skills
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Q1. More Projects related questions
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1-hour exam, few math questions, and few technical were asked, and all were MCQs

Very general topics were asked to check our communication skills

Q1. Intro, DBMS, SQL questions, OOPs concepts, and real-life examples, About the project I worked in, were asked. Most of the questions are based on the resume.
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Q2. OOPs- inheritance, encapsulation code on it overloading, overriding concept and coding question
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Q3. Coding questions on strings
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