C# Programming Fundamentals Quiz
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Questions and Answers

Which of the following is NOT a core feature of the C# programming language?

  • Direct hardware manipulation capabilities (correct)
  • Support for garbage collection and automatic memory management
  • Support for generics, partial types, and anonymous methods.
  • Native support for Component Object Model (COM) and Windows-based applications

    • What is the role of the Common Language Runtime (CLR) in the .NET framework?

  • Manages system resources of the computer
  • Provides a library of classes and interfaces for building applications
  • Converts source code into Microsoft Intermediate Language (MSIL) (correct)
  • Directly translates source code into machine code for execution

    • In C#, how are reference types such as objects and classes initialized by default?

  • To an empty string
  • To zero
  • To null (correct)
  • To an undefined state

    • What is the function of the Just-In-Time (JIT) compiler within the .NET framework?

    <p>To convert MSIL code into native machine code (C)</p> Signup and view all the answers

    Which of these best describes the purpose of lambda expressions in C# in the context of LINQ?

    <p>To write efficient and concise code within LINQ queries (C)</p> Signup and view all the answers

    Which of the following is the primary function of the .NET Base Class Library?

    <p>To provide classes and interfaces for application development (A)</p> Signup and view all the answers

    What is the significance of C# producing 'portable code'?

    <p>The code can run on any system where CLR is supported (C)</p> Signup and view all the answers

    Which of the following is NOT a described application type that can be built using C#?

    <p>Embedded Systems (D)</p> Signup and view all the answers

    What is the primary function of a namespace in C#?

    <p>To organize and group related classes (A)</p> Signup and view all the answers

    In C#, which keyword is used to access classes located in a namespace?

    <p>using (C)</p> Signup and view all the answers

    What is the correct file extension required to save a C# program?

    <p>.cs (B)</p> Signup and view all the answers

    What is the purpose of comments within a C# program?

    <p>To add notes and explanations to the code (B)</p> Signup and view all the answers

    Which of these is NOT a fundamental part of a basic C# program structure?

    <p>Data validation methods (A)</p> Signup and view all the answers

    What is the function of the Console.ReadLine() method in C#?

    <p>To read user input as a string (B)</p> Signup and view all the answers

    What does the Convert.ToInt32() method do in C#?

    <p>Converts a string to an integer (B)</p> Signup and view all the answers

    When a private assembly with a strong name is registered in the GAC, what does it become?

    <p>A shared assembly (D)</p> Signup and view all the answers

    What is the primary function of an assembly in the .NET framework?

    <p>To serve as a logical unit of functionality with types and resources. (A)</p> Signup and view all the answers

    Which of the following best describes the content of an assembly?

    <p>Compiled code, metadata, and resources. (D)</p> Signup and view all the answers

    What is the purpose of the manifest within an assembly's metadata?

    <p>To hold identification information, public types, and referenced assemblies. (A)</p> Signup and view all the answers

    How is the version number of an assembly typically represented?

    <p>As a set of four decimal values: Major.Minor.Build.Revision. (B)</p> Signup and view all the answers

    Where are shared assemblies typically registered?

    <p>In the Global Assembly Cache (GAC). (D)</p> Signup and view all the answers

    What is a key difference between private and shared assemblies regarding the number of applications that can use them?

    <p>Only shared assemblies can be used by multiple applications. (D)</p> Signup and view all the answers

    What is a critical requirement for deploying a shared assembly, that is not required for a private assembly?

    <p>It has to have a strong name. (C)</p> Signup and view all the answers

    What happens to an application with multiple versions of a private, non-backward compatible assembly?

    <p>The application stops working. (D)</p> Signup and view all the answers

    What is the primary benefit of using the Common Language Specification (CLS) within the .NET environment?

    <p>Defines a set of basic language features ensuring that code from different languages can interact. (A)</p> Signup and view all the answers

    Which of the following is NOT a core feature of the .NET framework, as described in the content?

    <p>A virtual machine that executes code in a safe and secure environment, providing memory management and garbage collection. (A)</p> Signup and view all the answers

    What does the Common Language Runtime (CLR) use to manage and use types within the .NET environment?

    <p>Common Type System (CTS) (D)</p> Signup and view all the answers

    What is the purpose of AJAX, a feature supported by the .NET framework?

    <p>To create highly responsive and interactive web applications by enabling asynchronous communication between the client and server. (D)</p> Signup and view all the answers

    Which of the following is NOT a specific example of a platform or framework that utilizes the .NET objects and classes?

    <p>Java Swing (A)</p> Signup and view all the answers

    What is the primary function of ASP.NET Web Forms?

    <p>To allow developers to build dynamic websites using a familiar drag-and-drop, event-driven model. (D)</p> Signup and view all the answers

    What is the function of the Windows Forms in the .NET framework?

    <p>To provide the graphical representation of any window displayed in an application, serving as the visual interface for users. (B)</p> Signup and view all the answers

    What is the primary reason why the .NET framework supports different programming languages?

    <p>To allow developers to choose the language that best suits their skills and the application being developed. (A)</p> Signup and view all the answers

    Flashcards

    C#

    An object-oriented programming language by Microsoft supporting encapsulation, inheritance, and polymorphism.

    Garbage Collection

    Automatic memory management feature of C# that helps reclaim memory used by objects no longer in use.

    LINQ

    Language Integrated Query allows writing database queries directly in C#.

    Common Language Runtime (CLR)

    The runtime environment that executes .NET code, handles debugging, and manages memory.

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    Microsoft Intermediate Language (MSIL)

    An intermediate code generated by the CLR from source code before execution.

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    Method Overriding

    A feature of C# that allows a subclass to provide a specific implementation of a method already defined in its base class.

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    Generics in C#

    A feature that allows defining classes, methods, and interfaces with a placeholder type, enhancing code reusability.

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    .NET Base Class Library

    A comprehensive collection of classes and interfaces for building .NET applications.

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    Namespaces

    Organized collections of classes used in programming.

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    ADO.NET

    A set of classes for accessing and managing data from databases and XML.

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    XML

    A universal markup language for structured data on the Web.

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    ASP.NET

    A framework for building web applications with minimal coding.

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    Windows Forms

    A set of classes for creating rich desktop user interfaces.

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    Common Language Specification (CLS)

    A set of language features ensuring compatibility in .NET languages.

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    Common Type System (CTS)

    Specification for declaring and managing data types in .NET.

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    AJAX in .NET

    Asynchronous JavaScript and XML, enhancing web applications' responsiveness.

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    Assembly

    A collection of types and resources forming a unit of functionality in .NET.

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    Types of Assemblies

    Assemblies can be either executable (EXE) or dynamic-link library (DLL).

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    Metadata in Assemblies

    Contains information about methods, types, and the resources in the assembly.

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    Manifest

    Part of the metadata storing identification and public types in an assembly.

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    Global Assembly Cache (GAC)

    A storage area for shared assemblies accessible by multiple applications.

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    Private Assembly

    An assembly used by a single application, stored in its directory; no registration required.

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    Shared Assembly

    An assembly that can be used by multiple applications and must be registered in GAC.

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    Namespace Declaration

    A way to organize classes in a C# project.

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    Class

    A blueprint for creating objects in C#, containing methods and attributes.

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    Main Method

    The entry point of every C# application where execution starts.

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    Using Keyword

    A declaration that allows access to classes in a namespace without full qualification.

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    Console Class

    A class in the System namespace used for input and output operations in C#.

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    Comments

    Annotations in the code that are ignored by the compiler, used for readability.

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    Strong Name

    A unique identifier for an assembly in .NET, allowing it to be shared across applications.

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    Compilation Requirement

    A C# program must be saved with the same name as its class and a .cs extension.

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    Study Notes

    C# Introduction

    • C# is an object-oriented programming language
    • Supports data encapsulation, inheritance, polymorphism, and method overriding
    • Developed by Anders Hejlsberg at Microsoft in the late 1990s
    • Used to build various applications (web, Windows, mobile, cloud)

    C# Features

    • Develops console and web applications
    • Supports garbage collection and automatic memory management
    • Includes native support for COM and Windows applications
    • Primitive data types are initialized to zeros, objects/classes to null
    • Produces portable code
    • Secure, controlled runtime environment
    • Supports generics, partial types, anonymous methods, extending scope and power
    • Supports LINQ (Language-Integrated Query) and lambda expressions
    • LINQ allows database queries in C#
    • Lambda expressions enhance efficiency in LINQ

    .NET Framework Structure

    • A collection of tools, technologies, and languages for building and deploying applications
    • A software development framework from Microsoft
    • Provides an environment for different application types
    • Includes VB, C++, C#, JScript, and J#
    • Common Language Specification (CLS) ensures language interoperability

    .NET Framework Components

    -Common Language Runtime (CLR)

    • Runtime environment for executing .NET code

    • Manages execution, debugging, and exception handling

    • Converts code into Microsoft Intermediate Language (MSIL)

    • Compiles MSIL to native code (machine language) before execution

    • .NET Base Class Library (BCL)

      • Contains classes and interfaces for building applications
      • Organized into namespaces
      • Provides tools for interacting with ASP.NET, Windows Forms, ADO.NET, and XML

    • ADO.NET

      • Provides access to relational databases and data sources (e.g., SQL Server, XML)

    • ASP.NET

      • Unified web development model
      • Includes services needed for building enterprise-class web applications

    • Windows Forms -Provides graphical representation for windows applications

    • Web Services -Extends the web infrastructure for connecting software applications

    • Operating System (OS)

      • Controls tasks and manages system resources

    • Manages hardware and software resources, supporting .NET application execution

    Assemblies

    • Fundamental unit of deployment, version control, reuse, and security in .NET
    • Compiled code in .NET, executed by the CLR
    • Two types: EXE (executable) and DLL (Dynamic-Link Library)
    • Contain metadata (information about methods, types, and resources) including manifests
    • Versioning system (Major.Minor.Build.Revision) enables installations of new versions
    • Private assemblies are used by a single application
    • Shared assemblies are registered in the Global Assembly Cache (GAC), allowing multiple applications to use them

    C# Program Structure

    • Consists of namespaces, classes, attributes, a Main method, comments
    • Main method is the entry point for execution

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    Description

    Test your knowledge on core features and concepts of the C# programming language and its role within the .NET framework. This quiz covers topics such as CLR, JIT compiler, lambda expressions, and namespaces in C#. Perfect for anyone looking to assess their understanding of C#.

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