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.NET(51-100)

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Quiz on .NET(51-100), created by Rizabek Kabzhanov on 16/05/2018.
Rizabek Kabzhanov
Quiz by Rizabek Kabzhanov, updated more than 1 year ago
Rizabek Kabzhanov
Created by Rizabek Kabzhanov almost 6 years ago
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Resource summary

Question 1

Question
Which of the following methods is the best to use to draw an empty triangle?
Answer
  • Graphics.DrawLines
  • Graphics.DrawRectangle
  • Graphics.DrawPolygon
  • Graphics.DrawEllipse
  • Graphics.FillRectangle
  • Graphics.FillPolygon
  • Graphics.FillEllipse

Question 2

Question
Which of the following classes is required to draw an empty circle? (Choose 2)
Answer
  • System.Drawing.Graphics
  • System.Drawing.Pen
  • System.Drawing.Brush
  • System.Drawing.Bitma

Question 3

Question
Which of the following brush classes is the best to use to create a solid rectangle that is red at the top and gradually fades to white towards the bottom?
Answer
  • System.Drawing.Drawing2D.HatchBrush
  • System.Drawing.Drawing2D.LinearGradientBrush
  • System.Drawing.Drawing2D.PathGradientBrush
  • System.Drawing.SolidBrush
  • System.Drawing.TextureBrush

Question 4

Question
What type of line would the following code sample draw? // C#Graphics g = this.CreateGraphics(); Pen p = new Pen(Color.Red, 10); p.StartCap = LineCap.Flat; p.EndCap = LineCap.ArrowAnchor; g.DrawLine(p, 50, 50, 400, 50);
Answer
  • An arrow pointing up
  • An arrow pointing down
  • An arrow pointing left
  • An arrow pointing right

Question 5

Question
Which of the following classes could you use to display a JPEG image from an existing file in a form? (Choose 2)
Answer
  • System.Drawing.Image
  • System.Drawing.Bitmap
  • System.Drawing.Imaging.Metafile
  • System.Windows.Forms.PictureBox

Question 6

Question
How can you draw a black border around a JPEG image that you have saved to disk and then save the updated image back to the disk?
Answer
  • Create a Graphics object by loading the JPEG image from the disk. Draw the border by calling Graphics.DrawRectangle. Finally, save the updated image by calling Graphics.Save.
  • Create a Bitmap object by loading the JPEG image from the disk. Draw the border by calling Bitmap.DrawRectangle. Finally, save the updated image by calling Bitmap.Save.
  • Create a Bitmap object by loading the JPEG image from the disk. Create a Graphics object by calling Graphics.FromImage. Draw the border by calling Graphics.DrawRectangle. Finally, save the updated image by calling Bitmap .Save.
  • Create a Bitmap object by loading the JPEG image from the disk. Create a Graphics object by calling Bitmap.CreateGraphics. Draw the border by calling Graphics.DrawRectangle. Finally, save the updated image by calling Bitmap .Save.

Question 7

Question
Which format is the best choice to use if you want to save a photograph that could be opened by a wide variety of applications?
Answer
  • ImageFormat.Bmp
  • ImageFormat.Gif
  • ImageFormat.Jpeg
  • ImageFormat.Png

Question 8

Question
Which format is the best choice to use if you want to save a pie chart that could be opened by a wide variety of applications?
Answer
  • ImageFormat.Bmp
  • ImageFormat.Gif
  • ImageFormat.Jpeg
  • ImageFormat.Png

Question 9

Question
What are the steps for adding text to an image?
Answer
  • Create a Graphics object and a string object. Then call string.Draw.
  • Create a Graphics object, a Font object, and a Brush object. Then call Graphics.DrawString.
  • Create a Graphics object, a Font object, and a Pen object. Then call Graphics.DrawString.
  • Create a Bitmap object, a Font object, and a Brush object. Then call Bitmap.DrawString.

Question 10

Question
Which class would you need to create an instance of to specify that a string should be centered when drawn?
Answer
  • StringFormat
  • StringAlignment
  • FormatFlags
  • LineAlignment

Question 11

Question
Which of the following commands would cause a string to be flush left?
Answer
  • StringFormat.LineAlignment = Near
  • StringFormat.LineAlignment = Far
  • StringFormat.Alignment = Near
  • StringFormat.Alignment = Far

Question 12

Question
You are developing an application that will add text to JPEG, PNG, and GIF image files. Which class should you use to allow you to edit any of those image formats?
Answer
  • Metafile
  • Icon
  • Bitmap
  • Image

Question 13

Question
Which of the following statements are TRUE about the .NET CLR? (Choose 4)
Answer
  • It provides a language-neutral development & execution environment.
  • It ensures that an application would not be able to access memory that it is not authorized to access.
  • It provides services to run "managed" applications.
  • The resources are garbage collected.
  • It provides services to run "unmanaged" applications.

Question 14

Question
Which of the following are valid .NET CLR JIT performance counters? (Choose 2)
Answer
  • Total memory used for JIT compilation
  • Average memory used for JIT compilation
  • Number of methods that failed to compile with the standard JIT
  • Percentage of processor time spent performing JIT compilation
  • Percentage of memory currently dedicated for JIT compilation

Question 15

Question
Which of the following statements is correct about Managed Code?
Answer
  • Managed code is the code that is compiled by the JIT compilers.
  • Managed code is the code where resources are Garbage Collected.
  • Managed code is the code that runs on top of Windows.
  • Managed code is the code that is written to target the services of the CLR.
  • Managed code is the code that can run on top of Linux.

Question 16

Question
Which of the following are NOT true about .NET Framework? (Choose 2)
Answer
  • It provides a consistent object-oriented programming environment whether object code is stored and executed locally, executed locally but Internet-distributed, or executed remotely.
  • It provides a code-execution environment that minimizes software deployment and versioning conflicts.
  • It provides a code-execution environment that promotes safe execution of code, including code created by an unknown or semi-trusted third party.
  • It provides different programming models for Windows-based applications and Web-based applications.
  • It provides an event driven programming model for building Windows Device Drivers.

Question 17

Question
Which of the following components of the .NET framework provide an extensible set of classes that can be used by any .NET compliant programming language?
Answer
  • .NET class libraries
  • Common Language Runtime
  • Common Language Infrastructure
  • Component Object Model
  • Common Type System

Question 18

Question
Which of the following jobs are NOT performed by Garbage Collector? (Choose 3)
Answer
  • Freeing memory on the stack.
  • Avoiding memory leaks.
  • Freeing memory occupied by unreferenced objects.
  • Closing unclosed database collections.
  • Closing unclosed files.

Question 19

Question
Which of the following .NET components can be used to remove unused references from the managed heap?
Answer
  • Common Language Infrastructure
  • CLR
  • Garbage Collector
  • Class Loader
  • CTS

Question 20

Question
Which of the following statements correctly define .NET Framework?
Answer
  • It is an environment for developing, building, deploying and executing Desktop Applications, Web Applications and Web Services.
  • It is an environment for developing, building, deploying and executing only Web Applications.
  • It is an environment for developing, building, deploying and executing Distributed Applications.
  • It is an environment for developing, building, deploying and executing Web Services.
  • It is an environment for development and execution of Windows applications.

Question 21

Question
Which of the following assemblies can be stored in Global Assembly Cache?
Answer
  • Private Assemblies
  • Friend Assemblies
  • Shared Assemblies
  • Public Assemblies
  • Protected Assemblies

Question 22

Question
Which of the following constitutes the .NET Framework? (Choose 2)
Answer
  • ASP.NET Applications
  • CLR
  • Framework Class Library
  • WinForm Applications
  • Windows Services

Question 23

Question
Code that targets the Common Language Runtime is known as
Answer
  • Unmanaged
  • Distributed
  • Legacy
  • Managed Code
  • Native Code

Question 24

Question
Which of the following statements is correct about the .NET Framework?
Answer
  • .NET Framework uses DCOM for achieving language interoperability.
  • .NET Framework is built on the DCOM technology.
  • .NET Framework uses DCOM for making transition between managed and unmanaged code.
  • .NET Framework uses DCOM for creating unmanaged applications.
  • .NET Framework uses COM+ services while creating Distributed Applications.

Question 25

Question
Which of the following is the root of the .NET type hierarchy?
Answer
  • System.Object
  • System.Type
  • System.Base
  • System.Parent
  • System.Root

Question 26

Question
Which of the following benefits do we get on running managed code under CLR? (Choose 4) (АППЕЛЯЦИОННЫЙ ВОПРОС!)
Answer
  • Type safety of the code running under CLR is assured.
  • It is ensured that an application would not access the memory that it is not authorized to access.
  • It launches separate process for every application running under it.
  • The resources are Garbage collected.

Question 27

Question
Which of the following statements are correct about JIT? (Choose 3)
Answer
  • JIT compiler compiles instructions into machine code at run time.
  • The code compiler by the JIT compiler runs under CLR.
  • The instructions compiled by JIT compilers are written in native code.
  • The instructions compiled by JIT compilers are written in Intermediate Language (IL) code.
  • The method is JIT compiled even if it is not called

Question 28

Question
Which of the following are parts of the .NET Framework? (Choose 2)
Answer
  • The Common Language Runtime (CLR)
  • The Framework Class Libraries (FCL)
  • Microsoft Published Web Services
  • Applications deployed on IIS
  • Mobile Applications

Question 29

Question
Which one of the following classes are present System.Collections.Genericnamespace? (Choose 2)
Answer
  • Stack
  • Tree
  • SortedDictionary
  • SortedArray

Question 30

Question
For the code snippet shown below, which of the following statements are valid? public class Generic<T>{ public T Field; public void TestSub() { T i = Field + 1; } } class MyProgram { static void Main(string[] args) { Generic<int> gen = new Generic<int>(); gen.TestSub(); } }
Answer
  • Addition will produce result 1.
  • Result of addition is system-dependent.
  • Program will generate run-time exception.
  • Compiler will report an error: Operator '+' is not defined for types T and int.
  • None of the above.

Question 31

Question
Which of the following statements are valid about generics in .NET Framework? (Choose 2)
Answer
  • Generics is a language feature.
  • We can create a generic class, however, we cannot create a generic interface in C#.NET.
  • Generics delegates are not allowed in C#.NET.
  • Generics are useful in collection classes in .NET framework.
  • None of All

Question 32

Question
Which of the following statements is valid about generic procedures in C#.NET?
Answer
  • All procedures in a Generic class are generic.
  • Only those procedures labeled as Generic are generic.
  • Generic procedures can take at the most one generic parameter.
  • Generic procedures must take at least one type parameter.
  • None of All.

Question 33

Question
For the code snippet given below, which of the following statements is valid? public class Generic<T> { public T Field;} class Program { static void Main(string[ ] args) { Generic<String> g = new Generic<String>(); g.Field = "Hello"; Console.WriteLine(g.Field); }}
Answer
  • It will print string "Hello" on the console.
  • Name Generic cannot be used as a class name because it's a keyword.
  • Compiler will give an error.
  • Member Field of class Generic is not accessible directly.
  • None of the above.

Question 34

Question
For the code snippet given below, which of the following statements are valid? public class MyContainer<T> where T: IComparabte { // Insert code here } (Choose 2)
Answer
  • Class MyContainer requires that it's type argument must implementIComparabte interface.
  • Type argument of class MyContainer must be IComparabte.
  • Compiler will report an error for this block of code.
  • This requirement on type argument is called as constraint

Question 35

Question
For the code snippet given below, which of the following statements are valid? public class MyContainer<T> where T: class, IComparable { //Insert code here} (Choose 2)
Answer
  • Class MyContainer requires that it's type argument must implementIComparable interface.
  • Compiler will report an error for this block of code.
  • There are multiple constraints on type argument to MyContainer class.
  • Class MyContainer requires that its type argument must be a reference type and it must implement IComparable interface.

Question 36

Question
Which of the following statements is valid about advantages of generics?
Answer
  • Generics shift the burden of type safety to the programmer rather than compiler.
  • Generics require use of explicit type casting.
  • Generics provide type safety without the overhead of multiple implementations.
  • Generics eliminate the possibility of run-time errors.
  • None of the above.

Question 37

Question
Which of the following statements is correct about the C#.NET code snippet given below? interface IMyInterface { void fun1(); int fun2(); } class MyClass: IMyInterface { void fun1() { } int IMyInterface.fun2() { } }
Answer
  • A function cannot be declared inside an interface.
  • A subroutine cannot be declared inside an interface.
  • A Method Table will not be created for class MyClass.
  • MyClass is an abstract class.
  • The definition of fun1() in class MyClass should be void IMyInterface.fun1().

Question 38

Question
Which of the following can be declared in an interface? (Choose 3)
Answer
  • Properties
  • Methods
  • Enumerations
  • Events
  • Structures

Question 39

Question
Which of the following statements is correct about an interface used in C#.NET?
Answer
  • One class can implement only one interface.
  • In a program if one class implements an interface then no other class in the same program can implement this interface.
  • From two base interfaces a new interface cannot be inherited.
  • Properties can be declared inside an interface.
  • Interfaces cannot be inherited.

Question 40

Question
Which of the following statements is correct about Interfaces used in C#.NET?
Answer
  • All interfaces are derived from an Object class.
  • Interfaces can be inherited.
  • All interfaces are derived from an Object interface.
  • Interfaces can contain only method declaration.
  • Interfaces can contain static data and methods.

Question 41

Question
Which of the following statements is correct about an interface used in C#.NET?
Answer
  • If a class implements an interface partially, then it should be an abstract class.
  • A class cannot implement an interface partially.
  • An interface can contain static methods.
  • An interface can contain static data.
  • Multiple interface inheritance is not allowed.

Question 42

Question
Which of the following statements is correct about an interface?
Answer
  • One interface can be implemented in another interface.
  • An interface can be implemented by multiple classes in the same program.
  • A class that implements an interface can explicitly implement members of that interface.
  • The functions declared in an interface have a body.

Question 43

Question
Which of the following statements are correct about an interface in C#.NET? (Choose 3)
Answer
  • A class can implement multiple interfaces.
  • Structures cannot inherit a class but can implement an interface.
  • In C#.NET, : is used to signify that a class member implements a specific interface.
  • An interface can implement multiple classes.
  • The static attribute can be used with a method that implements an interface declaration.

Question 44

Question
Which of the following is the correct implementation of the interface given below? interface IMyInterface { double MyFun(Single i); }
Answer
  • class MyClass { double MyFun(Single i) as IMyInterface.MyFun { // Some code }}
  • class MyClass { MyFun (Single i) As Double {// Some code } }
  • class MyClass: implements IMyInterface { double fun(Single si) implements IMyInterface.MyFun() { //Some code } }
  • class MyClass: IMyInterface { double IMyInterface.MyFun(Single i) { // Some code } }

Question 45

Question
Which of the following statements is correct?
Answer
  • When a class inherits an interface it inherits member definitions as well as its implementations.
  • An interface cannot contain the signature of an indexer.
  • Interfaces members are automatically public.
  • To implement an interface member, the corresponding member in the class must be public as well as static.

Question 46

Question
Which of the following statements are correct about an interface used in C#.NET? (Choose 3)
Answer
  • An interface can contain properties, methods and events.
  • The keyword must implement forces implementation of an interface.
  • Interfaces can be overloaded.
  • Interfaces can be implemented by a class or a struct.
  • Enhanced implementations of an interface can be developed without breaking existing code.

Question 47

Question
Which of the following can implement an interface? (Choose 2)
Answer
  • Data
  • Class
  • Enum
  • Structure
  • Namespace

Question 48

Question
Which of the following statements is correct about the C#.NET code snippet given below? interface IMyInterface{ void fun1(); void fun2(); } class MyClass: IMyInterface { private int i; void IMyInterface.fun1() { // Some code } }
Answer
  • Class MyClass is an abstract class.
  • Class MyClass cannot contain instance data.
  • Class MyClass fully implements the interface IMyInterface.
  • Interface IMyInterface should be inherited from the Object class.
  • The compiler will report an error since the interface IMyInterface is only partially implemented.

Question 49

Question
Which of the following statements is correct about the C#.NET code snippet given below? interface IPerson{ String FirstName { get; set; } String LastName { get; set; } void Print(); void Stock(); int Fun(); }
Answer
  • Properties cannot be declared inside an interface.
  • This is a perfectly workable interface.
  • The properties in the interface must have a body.
  • Subroutine in the interface must have a body.
  • Functions cannot be declared inside an interface.

Question 50

Question
For the code snippet shown below, which of the following statements are valid? public class TestIndiaBix { public void TestSub<M> (M arg) { Console.Write(arg); }} class MyProgram { static void Main(string[]args) { TestIndiaBix bix = new TestIndiaBix(); bix.TestSub("Hello world "); bix.TestSub(4.2f); }}
Answer
  • Program will compile and on execution will print: Hello world
  • A non generic class Hello cannot have generic subroutine.
  • Compiler will generate an error.
  • Program will generate a run-time exception.
  • None of all.
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