Fresher Mock Interview DOTNET | Technical Round | C# Interview Questions and Answers - For Freshers

Summary

In this mock interview, Ron Kumar, a Civil Engineering graduate with additional certifications in .NET and SQL, introduces himself and discusses his skills, goals, and hobbies. He explains key technical concepts like C#, object-oriented programming (OOP), inheritance, encapsulation, and various SQL commands. Ron also demonstrates knowledge of ASP.NET, state management, validation controls, and client-side technologies such as HTML, CSS, and JavaScript. His answers reflect a solid understanding of both theoretical and practical aspects of web development and database management, showcasing his technical expertise and readiness for a professional role.

Takeaways

• 😀 Ron Kumar is from Denmark, currently residing in Hyderabad, and has a degree in Civil Engineering from Sanskriti College of Engineering and Technology.
• 😀 He has completed additional courses in .NET and SQL along with his degree.
• 😀 Ron considers himself a motivated, hardworking, and honest individual with short-term and long-term career goals.
• 😀 His short-term goal is to secure a job with a reputed company, while his long-term goal is to build his career and contribute to the organization's success.
• 😀 He enjoys playing chess, volleyball, badminton, reading books, listening to music, and cooking in his free time.
• 😀 C# is a programming language developed by Microsoft in 2000, primarily used to build desktop, web, gaming, and mobile applications.
• 😀 Object-Oriented Programming (OOP) promotes reusability and security in applications, utilizing concepts like classes, objects, abstraction, encapsulation, polymorphism, and inheritance.
• 😀 Inheritance in OOP allows a child class to inherit properties and behaviors from a parent class, promoting code reusability.
• 😀 Encapsulation involves bundling data and methods into a single unit (class) to restrict access and ensure security.
• 😀 SQL is a standard language used for managing and manipulating data in databases, with categories including DML, DDL, DCL, and TCL for different operations like data retrieval, definition, and transaction control.

Q & A

Can you tell us about yourself?

My name is Ron Kumar. I am from Denmark and currently residing in Hyderabad. I have completed my bachelor's degree in Civil Engineering from Sanskriti College of Engineering and Technology. Additionally, I have completed courses in .NET and SQL. I belong to a nuclear family, and I am motivated, hardworking, and honest. My short-term goal is to secure a job in a reputed company, while my long-term goal is to achieve a good position and contribute to the organization's growth. My hobbies include playing chess, volleyball, badminton, reading, listening to music, and cooking.

What is C# and what are its uses?

C# is an object-oriented programming language developed by Microsoft in 2000. It is widely used for developing a variety of applications, such as desktop applications, web applications, gaming applications, and mobile applications.

What is Object-Oriented Programming (OOP)?

Object-Oriented Programming (OOP) is a programming paradigm that uses 'objects' to represent data and methods. It promotes reusability, modularity, and security. The core concepts of OOP include classes, objects, abstraction, encapsulation, polymorphism, and inheritance.

What is inheritance in OOP?

Inheritance is a mechanism in OOP where a new class (child class) derives properties and behaviors (methods) from an existing class (parent class). It promotes reusability of code, allowing the child class to modify or extend the functionality of the parent class.

What is encapsulation in OOP?

Encapsulation is the process of binding the data (attributes) and methods (functions) together in a single unit or class. It helps in data protection by restricting direct access to some of the object's components and allowing controlled access through functions.

What is the difference between function overloading and function overriding?

Function overloading occurs when multiple functions have the same name but different parameters. Function overriding, on the other hand, is when a function in a child class has the same name and signature as one in the parent class, but the child class provides a different implementation of the function.

What is SQL and what is its purpose?

SQL (Structured Query Language) is a language used for managing and manipulating data in relational databases. It allows users to perform operations such as retrieving, inserting, updating, and deleting data from the database.

Can you explain the different types of SQL commands?

SQL commands are categorized into four main types: DML (Data Manipulation Language) for querying and modifying data (e.g., SELECT, INSERT, UPDATE, DELETE); DDL (Data Definition Language) for defining and managing database structures (e.g., CREATE, ALTER, DELETE); DCL (Data Control Language) for managing access control (e.g., GRANT, REVOKE); and TCL (Transaction Control Language) for managing transactions (e.g., COMMIT, ROLLBACK).

What is ASP.NET and what are its key features?

ASP.NET is a web framework developed by Microsoft used for building web applications and services. It supports a range of web technologies including validation controls, state management, and data binding controls. ASP.NET helps in creating dynamic, data-driven web applications.

What are state management techniques in ASP.NET?

State management in ASP.NET refers to techniques used to preserve the state of controls or data across different pages. These techniques are divided into server-side state management (e.g., Session state, Application state) and client-side state management (e.g., ViewState, Hidden Fields).