IT1907.NET Framework C# Introduction

Questions and Answers

Which feature of C# allows writing database queries directly in the programming language?

Generics

Polymorphism

Method Overriding

LINQ (correct)

What is the primary function of the Common Language Runtime (CLR) in the .NET framework?

Manages hardware resources

Handles all security protocols

Provides support for web applications

Compiles source code into MSIL (correct)

What happens to primitive data types in C# when they are initialized?

They remain uninitialized

They throw an error if not explicitly initialized

They are set to one

They are automatically initialized to zeros (correct)

Which component of the .NET framework is responsible for converting MSIL into machine-language code?

JIT Compiler Signup and view all the answers

C# supports which of the following programming paradigms?

Both object-oriented and functional programming Signup and view all the answers

What type of applications can be developed using C#?

Web, mobile, console, and cloud-based applications Signup and view all the answers

What provides an environment for building and deploying different applications in the .NET framework?

Software Development Framework Signup and view all the answers

Which of the following features is NOT supported by C#?

Multiple Inheritance Signup and view all the answers

What is the primary purpose of the .NET Base Class Library?

To contain classes and interfaces for building applications Signup and view all the answers

Which of the following is a feature of ADO.NET?

Providing access to relational databases Signup and view all the answers

What does the Common Language Specification (CLS) guarantee?

Language independence within the .NET environment Signup and view all the answers

Which programming languages are supported by .NET?

VB, C++, C#, Jscript, and J# Signup and view all the answers

What is the role of XML in .NET applications?

It serves as a universal format for structured data Signup and view all the answers

Which of the following statements about ASP.NET is true?

ASP.NET Web Forms support a drag-and-drop model Signup and view all the answers

What does the Common Type System (CTS) specify?

How types are declared, used, and managed Signup and view all the answers

Which feature allows .NET to support multiple programming languages?

Common Language Infrastructure (CLI) Signup and view all the answers

What are assemblies in the .NET framework?

A collection of types and resources Signup and view all the answers

Which of the following is TRUE about shared assemblies?

They are required to be registered in the Global Assembly Cache. Signup and view all the answers

What happens if a private assembly has multiple versions that are not backward compatible?

The application will stop working. Signup and view all the answers

What defines the version number of an assembly in .NET?

A combination of Major.Minor.Build.Revision. Signup and view all the answers

What is the purpose of metadata in an assembly?

It provides information about methods, types, and resources. Signup and view all the answers

Which of these statements about private assemblies is accurate?

They do not require registration. Signup and view all the answers

What is a key feature of AJAX in .NET?

It facilitates highly responsive web applications. Signup and view all the answers

What is the role of the Common Language Runtime in .NET?

It acts as the execution engine for .NET applications. Signup and view all the answers

What happens when a private assembly is registered in the GAC with a strong name?

It becomes a shared assembly. Signup and view all the answers

Which component is NOT part of the structure of a C# program?

File versioning Signup and view all the answers

What is the purpose of the 'using' keyword in a C# program?

To access classes in a namespace. Signup and view all the answers

What must a C# program file be named to successfully compile?

It must match the class name. Signup and view all the answers

Which of the following statements correctly describes the role of a namespace in C#?

It organizes classes in a project. Signup and view all the answers

How does the Console.ReadLine() method function in C#?

It reads input from the user. Signup and view all the answers

What will happen if a comment is made with // in C#?

The comment will be ignored by the compiler. Signup and view all the answers

What type of value is 'age' in the provided sample C# program?

Integer Signup and view all the answers

Study Notes

C# Programming Language

C# is an object-oriented language supporting encapsulation, inheritance, polymorphism, and method overriding.
Developed by Microsoft in the late 1990s, led by Anders Hejlsberg.
Enables building diverse applications: web, desktop, mobile, and cloud-based.
Supports garbage collection and automatic memory management.
Primitive types initialize to zero; reference types like objects initialize to null.
Produces portable code, executing in a secure and controlled runtime environment.
Features generics, partial types, anonymous methods, LINQ, and lambda expressions to enhance coding efficiency.

.NET Framework Structure

A Microsoft software development framework streamlining application building and deployment.
Runs primarily on Microsoft OS but has alternative versions for other operating systems.
Common Language Runtime (CLR) manages execution, debugging, and portability of .NET code.
Source code compiles to Microsoft Intermediate Language (MSIL), then to native code via Just-In-Time (JIT) compiler.
Base Class Library provides classes and interfaces for application development, organized in namespaces.
ADO.NET offers data access, supporting SQL Server and XML as universal data formats.

Web Development with ASP.NET

ASP.NET is a unified model for developing enterprise-class web applications with minimal coding.
ASP.NET Web Forms facilitate dynamic website creation through a user-friendly event-driven model.
Web Services extend infrastructure for software connectivity.

Common Language Specification (CLS) and Common Type System (CTS)

CLS ensures interoperability among various languages in the .NET environment.
CTS specifies type declaration and management for CLR usage.

.NET Features and Security

Interoperability allows code sharing across different programming languages, including VB, C++, C#, JScript, and J#.
Language independence compiles code into Common Language Infrastructure (CLI) for cross-language data type exchange.
Supports AJAX for creating responsive web applications.
Assembly used for code sharing ensures security, controlling access to class methods.

Assemblies in .NET

Assemblies are collections of types/resources constructing a functional unit, crucial for deployment, version control, and reuse.
Assemblies can be EXE (executable) or DLL (Dynamic-Link Library), which contain functions usable by applications.
Contains metadata, including manifest and version number (Major.Minor.Build.Revision).
Two types of assembly deployment: private (single application use) and shared (multiple applications use), with differences in GAC registration and version compatibility.

C# Program Structure

A C# program includes namespace declaration, class, class methods, class attributes, main method, statements, and comments.
Every C# file must match its class name and end with a .cs extension.
The 'using' directive at the start accesses classes from namespaces (e.g., using System;).
Comments can be included using // and are ignored by the compiler.

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Description

This quiz covers the fundamentals of C#, an object-oriented programming language developed by Microsoft. Explore its key features including data encapsulation, inheritance, and the application types it supports such as web, mobile, and cloud-based applications. Test your understanding of C# and its capabilities to build various applications.