General

Question 1

.NET Overview

Answer 1

.NET is a free, cross-platform framework for building various types of applications.

Question 2

CLR (Common Language Runtime)

Answer 2

The CLR is the virtual machine component of .NET that manages the execution of .NET programs.

Question 3

BCL (Base Class Library)

Answer 3

The BCL provides foundational classes for handling system-level and common operations in .NET.

Question 4

C# Language

Answer 4

C# is a statically-typed, object-oriented language primarily used with the .NET framework.

Question 5

.NET Core vs .NET Framework

Answer 5

.NET Core is cross-platform, while .NET Framework works only on Windows.

Question 6

Solution and Project Structure

Answer 6

A solution is a container for organizing multiple projects in Visual Studio.

Question 7

Data Types

Answer 7

Data types in C# define the kind of data (e.g., int, string, bool) that a variable can hold.

Question 8

Control Flow

Answer 8

Control flow statements (if, else, switch) determine the direction of execution in code.

Question 9

OOP Principles

Answer 9

OOP in .NET includes encapsulation, inheritance, polymorphism, and abstraction.

Question 10

Methods

Answer 10

Methods in C# are blocks of code that perform a specific task and can return a value.

Question 11

LINQ (Language Integrated Query)

Answer 11

LINQ allows querying collections in a readable, SQL-like manner directly in C#.

Question 12

Exceptions

Answer 12

Exceptions in .NET are runtime errors that can be caught and handled using try-catch blocks.

Question 13

Asynchronous Programming

Answer 13

Async programming in .NET is done using async and await keywords to improve performance.

Question 14

File I/O

Answer 14

File I/O in .NET involves reading from and writing to files using classes like Stream and File.

Question 15

Entity Framework Core

Answer 15

Entity Framework Core is an ORM for working with databases using .NET code.

Question 16

ASP.NET Core

Answer 16

ASP.NET Core is a cross-platform framework for building web applications and APIs.

Question 17

Console Application

Answer 17

A console application runs in the command-line interface and performs a specific task.

Question 18

NuGet

Answer 18

NuGet is a package manager for .NET, providing libraries and tools to projects.

Question 19

Garbage Collection

Answer 19

The garbage collector in .NET automatically reclaims unused memory to optimize performance.

Question 20

Namespace

Answer 20

Namespaces in C# organize classes and avoid naming conflicts in large projects.